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 120 <a href="hog_8cl.xhtml">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) 2017-2018 ARM Limited.</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * SPDX-License-Identifier: MIT</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * of this software and associated documentation files (the &quot;Software&quot;), to</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * deal in the Software without restriction, including without limitation the</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * sell copies of the Software, and to permit persons to whom the Software is</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * furnished to do so, subject to the following conditions:</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * The above copyright notice and this permission notice shall be included in all</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * copies or substantial portions of the Software.</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> * SOFTWARE.</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="helpers_8h.xhtml">helpers.h</a>&quot;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="types_8h.xhtml">types.h</a>&quot;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#if defined(CELL_WIDTH) &amp;&amp; defined(CELL_HEIGHT) &amp;&amp; defined(NUM_BINS) &amp;&amp; defined(PHASE_SCALE)</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;__kernel <span class="keywordtype">void</span> <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#aed58e449c2d482b55d61ee6bfd0de984">hog_orientation_binning</a>(<a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(mag),</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;                                      <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a74991bda4fcca3ce5dcf8afdccdbafff">phase</a>),</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;                                      <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#adbf67dcee294e673cf796f1ed8aeb6a4">dst</a>))</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;{</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keywordtype">float</span> bins[NUM_BINS] = { 0 };</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <span class="comment">// Compute address for the magnitude and phase images</span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> mag   = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(mag);</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a74991bda4fcca3ce5dcf8afdccdbafff">phase</a> = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(phase);</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    __global uchar *mag_row_ptr   = mag.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>;</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    __global uchar *phase_row_ptr = phase.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>;</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="keywordflow">for</span>(<span class="keywordtype">int</span> yc = 0; yc &lt; CELL_HEIGHT; ++yc)</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    {</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        <span class="keywordtype">int</span> xc = 0;</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        <span class="keywordflow">for</span>(; xc &lt;= (CELL_WIDTH - 4); xc += 4)</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        {</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;            <span class="comment">// Load magnitude and phase values</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;            <span class="keyword">const</span> float4 mag_f32   = convert_float4(vload4(0, (__global <span class="keywordtype">short</span> *)mag_row_ptr + xc));</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;            float4       phase_f32 = convert_float4(vload4(0, phase_row_ptr + xc));</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;            <span class="comment">// Scale phase: phase * scale + 0.5f</span></div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;            phase_f32 = (float4)0.5f + phase_f32 * (float4)PHASE_SCALE;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;            <span class="comment">// Compute histogram index.</span></div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;            int4 hidx_s32 = convert_int4(phase_f32);</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;            <span class="comment">// Compute magnitude weights (w0 and w1)</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;            <span class="keyword">const</span> float4 hidx_f32 = convert_float4(hidx_s32);</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;            <span class="comment">// w1 = phase_f32 - hidx_s32</span></div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;            <span class="keyword">const</span> float4 w1_f32 = phase_f32 - hidx_f32;</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;            <span class="comment">// w0 = 1.0 - w1</span></div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;            <span class="keyword">const</span> float4 w0_f32 = (float4)1.0f - w1_f32;</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;            <span class="comment">// Calculate the weights for splitting vote</span></div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;            <span class="keyword">const</span> float4 mag_w0_f32 = mag_f32 * w0_f32;</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;            <span class="keyword">const</span> float4 mag_w1_f32 = mag_f32 * w1_f32;</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;            <span class="comment">// Weighted vote between 2 bins</span></div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;            <span class="comment">// Check if the histogram index is equal to NUM_BINS. If so, replace the index with 0</span></div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;            hidx_s32 = select(hidx_s32, (int4)0, hidx_s32 == (int4)(NUM_BINS));</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;            <span class="comment">// Bin 0</span></div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;            bins[hidx_s32.s0] += mag_w0_f32.s0;</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;            bins[hidx_s32.s1] += mag_w0_f32.s1;</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;            bins[hidx_s32.s2] += mag_w0_f32.s2;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;            bins[hidx_s32.s3] += mag_w0_f32.s3;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;            hidx_s32 += (int4)1;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;            <span class="comment">// Check if the histogram index is equal to NUM_BINS. If so, replace the index with 0</span></div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;            hidx_s32 = select(hidx_s32, (int4)0, hidx_s32 == (int4)(NUM_BINS));</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;            <span class="comment">// Bin1</span></div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;            bins[hidx_s32.s0] += mag_w1_f32.s0;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;            bins[hidx_s32.s1] += mag_w1_f32.s1;</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;            bins[hidx_s32.s2] += mag_w1_f32.s2;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;            bins[hidx_s32.s3] += mag_w1_f32.s3;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        }</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        <span class="comment">// Left over computation</span></div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        <span class="keywordflow">for</span>(; xc &lt; CELL_WIDTH; xc++)</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        {</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">float</span> mag_value   = *((__global <span class="keywordtype">short</span> *)mag_row_ptr + xc);</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">float</span> phase_value = *(phase_row_ptr + xc) * (<span class="keywordtype">float</span>)PHASE_SCALE + 0.5f;</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">float</span> w1          = phase_value - floor(phase_value);</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;            <span class="comment">// The quantised phase is the histogram index [0, NUM_BINS - 1]</span></div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;            <span class="comment">// Check limit of histogram index. If hidx == NUM_BINS, hidx = 0</span></div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;            <span class="keyword">const</span> uint hidx = (uint)(phase_value) % NUM_BINS;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;            <span class="comment">// Weighted vote between 2 bins</span></div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;            bins[hidx] += mag_value * (1.0f - w1);</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;            bins[(hidx + 1) % NUM_BINS] += mag_value * w1;</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;        }</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;        <span class="comment">// Point to the next row of magnitude and phase images</span></div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        mag_row_ptr += mag_stride_y;</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        phase_row_ptr += phase_stride_y;</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    }</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    <span class="comment">// Compute address for the destination image</span></div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#adbf67dcee294e673cf796f1ed8aeb6a4">dst</a> = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst);</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;    <span class="comment">// Store the local HOG in the global memory</span></div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    <span class="keywordtype">int</span> xc = 0;</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;    <span class="keywordflow">for</span>(; xc &lt;= (NUM_BINS - 4); xc += 4)</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;    {</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        float4 values = vload4(0, bins + xc);</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;        vstore4(values, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + xc);</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    }</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    <span class="comment">// Left over stores</span></div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    <span class="keywordflow">for</span>(; xc &lt; NUM_BINS; ++xc)</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    {</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;        ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>)[xc] = bins[xc];</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    }</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;}</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* CELL_WIDTH and CELL_HEIGHT and NUM_BINS and PHASE_SCALE */</span><span class="preprocessor"></span></div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;<span class="preprocessor">#if defined(NUM_CELLS_PER_BLOCK_HEIGHT) &amp;&amp; defined(NUM_BINS_PER_BLOCK_X) &amp;&amp; defined(NUM_BINS_PER_BLOCK) &amp;&amp; defined(HOG_NORM_TYPE) &amp;&amp; defined(L2_HYST_THRESHOLD)</span></div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;<span class="preprocessor">#ifndef L2_NORM</span></div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;<span class="preprocessor">#error The value of enum class HOGNormType::L2_NORM has not be passed to the OpenCL kernel</span></div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* not L2_NORM */</span><span class="preprocessor"></span></div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;<span class="preprocessor">#ifndef L2HYS_NORM</span></div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;<span class="preprocessor">#error The value of enum class HOGNormType::L2HYS_NORM has not be passed to the OpenCL kernel</span></div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* not L2HYS_NORM */</span><span class="preprocessor"></span></div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;<span class="preprocessor">#ifndef L1_NORM</span></div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;<span class="preprocessor">#error The value of enum class HOGNormType::L1_NORM has not be passed to the OpenCL kernel</span></div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* not L1_NORM */</span><span class="preprocessor"></span></div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;__kernel <span class="keywordtype">void</span> <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#ae01f1c200a32d41a056d513760981326">hog_block_normalization</a>(<a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a6743f0a130e8311e6f5b1a23df102472">src</a>),</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;                                      <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(dst))</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;{</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    <span class="keywordtype">float</span>  <a class="code" href="reduction__operation_8cl.xhtml#ab0df00f5333da51860deb93deb44a782">sum</a>     = 0.0f;</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;    float4 sum_f32 = (float4)(0.0f);</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;    <span class="comment">// Compute address for the source and destination tensor</span></div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a6743f0a130e8311e6f5b1a23df102472">src</a> = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src);</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> dst = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(dst);</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;    <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> yc = 0; yc &lt; NUM_CELLS_PER_BLOCK_HEIGHT; ++yc)</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    {</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;        <span class="keyword">const</span> __global <span class="keywordtype">float</span> *hist_ptr = (__global <span class="keywordtype">float</span> *)(src.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a> + yc * src_stride_y);</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;        <span class="keywordtype">int</span> xc = 0;</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;        <span class="keywordflow">for</span>(; xc &lt;= (NUM_BINS_PER_BLOCK_X - 16); xc += 16)</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;        {</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;            <span class="keyword">const</span> float4 val0 = vload4(0, hist_ptr + xc + 0);</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;            <span class="keyword">const</span> float4 val1 = vload4(0, hist_ptr + xc + 4);</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;            <span class="keyword">const</span> float4 val2 = vload4(0, hist_ptr + xc + 8);</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;            <span class="keyword">const</span> float4 val3 = vload4(0, hist_ptr + xc + 12);</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="preprocessor">#if(HOG_NORM_TYPE == L2_NORM) || (HOG_NORM_TYPE == L2HYS_NORM)</span></div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;            <span class="comment">// Compute val^2 for L2_NORM or L2HYS_NORM</span></div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;            sum_f32 += val0 * val0;</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;            sum_f32 += val1 * val1;</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;            sum_f32 += val2 * val2;</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;            sum_f32 += val3 * val3;</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="preprocessor">#else  </span><span class="comment">/* (HOG_NORM_TYPE == L2_NORM) || (HOG_NORM_TYPE == L2HYS_NORM) */</span><span class="preprocessor"></span></div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;            <span class="comment">// Compute |val| for L1_NORM</span></div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;            sum_f32 += fabs(val0);</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;            sum_f32 += fabs(val1);</div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;            sum_f32 += fabs(val2);</div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;            sum_f32 += fabs(val3);</div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* (HOG_NORM_TYPE == L2_NORM) || (HOG_NORM_TYPE == L2HYS_NORM) */</span><span class="preprocessor"></span></div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;</div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;            <span class="comment">// Store linearly the input values un-normalized in the output image. These values will be reused for the normalization.</span></div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;            <span class="comment">// This approach will help us to be cache friendly in the next for loop where the normalization will be done because all the values</span></div><div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;            <span class="comment">// will be accessed consecutively</span></div><div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;            vstore4(val0, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + xc + 0 + yc * NUM_BINS_PER_BLOCK_X);</div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;            vstore4(val1, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + xc + 4 + yc * NUM_BINS_PER_BLOCK_X);</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;            vstore4(val2, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + xc + 8 + yc * NUM_BINS_PER_BLOCK_X);</div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;            vstore4(val3, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + xc + 12 + yc * NUM_BINS_PER_BLOCK_X);</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;        }</div><div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;</div><div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;        <span class="comment">// Compute left over</span></div><div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;        <span class="keywordflow">for</span>(; xc &lt; NUM_BINS_PER_BLOCK_X; ++xc)</div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;        {</div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">float</span> val = hist_ptr[xc];</div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;</div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="preprocessor">#if(HOG_NORM_TYPE == L2_NORM) || (HOG_NORM_TYPE == L2HYS_NORM)</span></div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;            sum += val * val;</div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;<span class="preprocessor">#else  </span><span class="comment">/* (HOG_NORM_TYPE == L2_NORM) || (HOG_NORM_TYPE == L2HYS_NORM) */</span><span class="preprocessor"></span></div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;            sum += fabs(val);</div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* (HOG_NORM_TYPE == L2_NORM) || (HOG_NORM_TYPE == L2HYS_NORM) */</span><span class="preprocessor"></span></div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;            ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>)[xc + 0 + yc * NUM_BINS_PER_BLOCK_X] = val;</div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;        }</div><div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    }</div><div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;</div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    sum += dot(sum_f32, (float4)1.0f);</div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;</div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;    <span class="keywordtype">float</span> <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">scale</a> = 1.0f / (sqrt(sum) + NUM_BINS_PER_BLOCK * 0.1f);</div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;</div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="preprocessor">#if(HOG_NORM_TYPE == L2HYS_NORM)</span></div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;    <span class="comment">// Reset sum</span></div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;    sum_f32 = (float4)0.0f;</div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;    sum     = 0.0f;</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;</div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;    <span class="keywordtype">int</span> k = 0;</div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    <span class="keywordflow">for</span>(; k &lt;= NUM_BINS_PER_BLOCK - 16; k += 16)</div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;    {</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;        float4 val0 = vload4(0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + k + 0);</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        float4 val1 = vload4(0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + k + 4);</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;        float4 val2 = vload4(0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + k + 8);</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;        float4 val3 = vload4(0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + k + 12);</div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;</div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;        <span class="comment">// Scale val</span></div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;        val0 = val0 * (float4)scale;</div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;        val1 = val1 * (float4)scale;</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;        val2 = val2 * (float4)scale;</div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;        val3 = val3 * (float4)scale;</div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;</div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;        <span class="comment">// Clip val if over _threshold_l2hys</span></div><div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;        val0 = fmin(val0, (float4)L2_HYST_THRESHOLD);</div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;        val1 = fmin(val1, (float4)L2_HYST_THRESHOLD);</div><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;        val2 = fmin(val2, (float4)L2_HYST_THRESHOLD);</div><div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;        val3 = fmin(val3, (float4)L2_HYST_THRESHOLD);</div><div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;</div><div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;        <span class="comment">// Compute val^2</span></div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;        sum_f32 += val0 * val0;</div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;        sum_f32 += val1 * val1;</div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;        sum_f32 += val2 * val2;</div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;        sum_f32 += val3 * val3;</div><div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;</div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;        vstore4(val0, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + k + 0);</div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;        vstore4(val1, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + k + 4);</div><div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;        vstore4(val2, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + k + 8);</div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;        vstore4(val3, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + k + 12);</div><div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;    }</div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;</div><div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;    <span class="comment">// Compute left over</span></div><div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;    <span class="keywordflow">for</span>(; k &lt; NUM_BINS_PER_BLOCK; ++k)</div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;    {</div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;        <span class="keywordtype">float</span> val = ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>)[k] * <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">scale</a>;</div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;</div><div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;        <span class="comment">// Clip scaled input_value if over L2_HYST_THRESHOLD</span></div><div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;        val = fmin(val, (<span class="keywordtype">float</span>)L2_HYST_THRESHOLD);</div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;</div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;        sum += val * val;</div><div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;</div><div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;        ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>)[k] = val;</div><div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;    }</div><div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;</div><div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;    sum += dot(sum_f32, (float4)1.0f);</div><div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;</div><div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;    <span class="comment">// We use the same constants of OpenCV</span></div><div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;    scale = 1.0f / (sqrt(sum) + 1e-3f);</div><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;</div><div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* (HOG_NORM_TYPE == L2HYS_NORM) */</span><span class="preprocessor"></span></div><div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;</div><div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;    <span class="keywordtype">int</span> i = 0;</div><div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;    <span class="keywordflow">for</span>(; i &lt;= (NUM_BINS_PER_BLOCK - 16); i += 16)</div><div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;    {</div><div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;        float4 val0 = vload4(0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + i + 0);</div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;        float4 val1 = vload4(0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + i + 4);</div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;        float4 val2 = vload4(0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + i + 8);</div><div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;        float4 val3 = vload4(0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + i + 12);</div><div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;</div><div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;        <span class="comment">// Multiply val by the normalization scale factor</span></div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;        val0 = val0 * (float4)scale;</div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;        val1 = val1 * (float4)scale;</div><div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;        val2 = val2 * (float4)scale;</div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;        val3 = val3 * (float4)scale;</div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;</div><div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;        vstore4(val0, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + i + 0);</div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;        vstore4(val1, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + i + 4);</div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;        vstore4(val2, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + i + 8);</div><div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;        vstore4(val3, 0, ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>) + i + 12);</div><div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;    }</div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;</div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;    <span class="keywordflow">for</span>(; i &lt; NUM_BINS_PER_BLOCK; ++i)</div><div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;    {</div><div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;        ((__global <span class="keywordtype">float</span> *)dst.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>)[i] *= <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">scale</a>;</div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;    }</div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;}</div><div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* NUM_CELLS_PER_BLOCK_HEIGHT and NUM_BINS_PER_BLOCK_X and NUM_BINS_PER_BLOCK and HOG_NORM_TYPE and L2_HYST_THRESHOLD */</span><span class="preprocessor"></span></div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;</div><div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;<span class="preprocessor">#if defined(NUM_BLOCKS_PER_DESCRIPTOR_Y) &amp;&amp; defined(NUM_BINS_PER_DESCRIPTOR_X) &amp;&amp; defined(THRESHOLD) &amp;&amp; defined(MAX_NUM_DETECTION_WINDOWS) &amp;&amp; defined(IDX_CLASS) &amp;&amp; defined(DETECTION_WINDOW_STRIDE_WIDTH) &amp;&amp; defined(DETECTION_WINDOW_STRIDE_HEIGHT) &amp;&amp; defined(DETECTION_WINDOW_WIDTH) &amp;&amp; defined(DETECTION_WINDOW_HEIGHT)</span></div><div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;</div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;__kernel <span class="keywordtype">void</span> <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a174ee1e2e66053db45c7fb4aa68920e7">hog_detector</a>(<a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(src),</div><div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;                           __global <span class="keywordtype">float</span> *<a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#aa0803d3eb7f6177d7ff8eb49cf0772ab">hog_descriptor</a>,</div><div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;                           __global <a class="code" href="struct_detection_window.xhtml">DetectionWindow</a> *dst,</div><div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;                           __global uint *num_detection_windows)</div><div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;{</div><div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;    <span class="comment">// Check if the DetectionWindow array is full</span></div><div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;    <span class="keywordflow">if</span>(*num_detection_windows &gt;= MAX_NUM_DETECTION_WINDOWS)</div><div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;    {</div><div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;        <span class="keywordflow">return</span>;</div><div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;    }</div><div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;</div><div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> src = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src);</div><div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;</div><div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> src_step_y_f32 = src_stride_y / <span class="keyword">sizeof</span>(float);</div><div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;</div><div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;    <span class="comment">// Init score_f32 with 0</span></div><div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;    float4 score_f32 = (float4)0.0f;</div><div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;</div><div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;    <span class="comment">// Init score with 0</span></div><div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;    <span class="keywordtype">float</span> score = 0.0f;</div><div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;</div><div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;    __global <span class="keywordtype">float</span> *src_row_ptr = (__global <span class="keywordtype">float</span> *)src.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>;</div><div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;</div><div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;    <span class="comment">// Compute Linear SVM</span></div><div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;    <span class="keywordflow">for</span>(<span class="keywordtype">int</span> yb = 0; yb &lt; NUM_BLOCKS_PER_DESCRIPTOR_Y; ++yb, src_row_ptr += src_step_y_f32)</div><div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;    {</div><div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;        <span class="keywordtype">int</span> xb = 0;</div><div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;</div><div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">int</span> offset_y = yb * NUM_BINS_PER_DESCRIPTOR_X;</div><div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;</div><div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;        <span class="keywordflow">for</span>(; xb &lt; (int)NUM_BINS_PER_DESCRIPTOR_X - 8; xb += 8)</div><div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;        {</div><div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;            <span class="comment">// Load descriptor values</span></div><div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;            float4 a0_f32 = vload4(0, src_row_ptr + xb + 0);</div><div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;            float4 a1_f32 = vload4(0, src_row_ptr + xb + 4);</div><div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;</div><div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;            float4 b0_f32 = vload4(0, hog_descriptor + xb + 0 + offset_y);</div><div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;            float4 b1_f32 = vload4(0, hog_descriptor + xb + 4 + offset_y);</div><div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;</div><div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;            <span class="comment">// Multiply accumulate</span></div><div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;            score_f32 += a0_f32 * b0_f32;</div><div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;            score_f32 += a1_f32 * b1_f32;</div><div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;        }</div><div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;</div><div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;        <span class="keywordflow">for</span>(; xb &lt; NUM_BINS_PER_DESCRIPTOR_X; ++xb)</div><div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;        {</div><div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">float</span> <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#aac40b7097f2bda9274ae07fa33d15a79">a</a> = src_row_ptr[xb];</div><div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">float</span> <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a7b8004eef325a40dd43eb80755610fff">b</a> = hog_descriptor[xb + offset_y];</div><div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;</div><div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;            score += a * <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a7b8004eef325a40dd43eb80755610fff">b</a>;</div><div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;        }</div><div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;    }</div><div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;</div><div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;    score += dot(score_f32, (float4)1.0f);</div><div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;</div><div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;    <span class="comment">// Add the bias. The bias is located at the position (descriptor_size() - 1)</span></div><div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;    <span class="comment">// (descriptor_size - 1) = NUM_BINS_PER_DESCRIPTOR_X * NUM_BLOCKS_PER_DESCRIPTOR_Y</span></div><div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;    score += hog_descriptor[NUM_BINS_PER_DESCRIPTOR_X * NUM_BLOCKS_PER_DESCRIPTOR_Y];</div><div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;</div><div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;    <span class="keywordflow">if</span>(score &gt; (<span class="keywordtype">float</span>)THRESHOLD)</div><div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;    {</div><div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;        <span class="keywordtype">int</span> <span class="keywordtype">id</span> = atomic_inc(num_detection_windows);</div><div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;        <span class="keywordflow">if</span>(<span class="keywordtype">id</span> &lt; MAX_NUM_DETECTION_WINDOWS)</div><div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;        {</div><div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;            dst[id].x         = get_global_id(0) * DETECTION_WINDOW_STRIDE_WIDTH;</div><div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;            dst[id].y         = get_global_id(1) * DETECTION_WINDOW_STRIDE_HEIGHT;</div><div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;            dst[id].width     = DETECTION_WINDOW_WIDTH;</div><div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;            dst[id].height    = DETECTION_WINDOW_HEIGHT;</div><div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;            dst[id].idx_class = IDX_CLASS;</div><div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;            dst[id].score     = score;</div><div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;        }</div><div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;    }</div><div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;}</div><div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* NUM_BLOCKS_PER_DESCRIPTOR_Y &amp;&amp; NUM_BINS_PER_DESCRIPTOR_X &amp;&amp; THRESHOLD &amp;&amp; MAX_NUM_DETECTION_WINDOWS &amp;&amp; IDX_CLASS &amp;&amp;</span></div><div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;<span class="comment">        * DETECTION_WINDOW_STRIDE_WIDTH &amp;&amp; DETECTION_WINDOW_STRIDE_HEIGHT &amp;&amp; DETECTION_WINDOW_WIDTH &amp;&amp; DETECTION_WINDOW_HEIGHT */</span><span class="preprocessor"></span></div><div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_aac40b7097f2bda9274ae07fa33d15a79"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#aac40b7097f2bda9274ae07fa33d15a79">arm_compute::test::validation::a</a></div><div class="ttdeci">CLTensor a</div><div class="ttdef"><b>Definition:</b> <a href="validation_2_c_l_2_g_e_m_m_8cpp_source.xhtml#l00121">GEMM.cpp:121</a></div></div>
 121 <div class="ttc" id="struct_detection_window_xhtml"><div class="ttname"><a href="struct_detection_window.xhtml">DetectionWindow</a></div><div class="ttdoc">Detection window struct. </div><div class="ttdef"><b>Definition:</b> <a href="types_8h_source.xhtml#l00047">types.h:47</a></div></div>
 122 <div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_aed58e449c2d482b55d61ee6bfd0de984"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#aed58e449c2d482b55d61ee6bfd0de984">arm_compute::test::validation::reference::hog_orientation_binning</a></div><div class="ttdeci">void hog_orientation_binning(const SimpleTensor&lt; T &gt; &amp;mag, const SimpleTensor&lt; U &gt; &amp;phase, SimpleTensor&lt; V &gt; &amp;hog_space, const HOGInfo &amp;hog_info)</div><div class="ttdef"><b>Definition:</b> <a href="validation_2reference_2_h_o_g_descriptor_8cpp_source.xhtml#l00117">HOGDescriptor.cpp:117</a></div></div>
 123 <div class="ttc" id="reduction__operation_8cl_xhtml_ab0df00f5333da51860deb93deb44a782"><div class="ttname"><a href="reduction__operation_8cl.xhtml#ab0df00f5333da51860deb93deb44a782">sum</a></div><div class="ttdeci">DATA_TYPE sum(__global const DATA_TYPE *input)</div><div class="ttdoc">Calculate sum of a vector. </div><div class="ttdef"><b>Definition:</b> <a href="reduction__operation_8cl_source.xhtml#l00052">reduction_operation.cl:52</a></div></div>
 124 <div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a74991bda4fcca3ce5dcf8afdccdbafff"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a74991bda4fcca3ce5dcf8afdccdbafff">arm_compute::test::validation::reference::phase</a></div><div class="ttdeci">SimpleTensor&lt; uint8_t &gt; phase(const SimpleTensor&lt; T &gt; &amp;gx, const SimpleTensor&lt; T &gt; &amp;gy, PhaseType phase_type)</div><div class="ttdef"><b>Definition:</b> <a href="validation_2reference_2_phase_8cpp_source.xhtml#l00035">Phase.cpp:35</a></div></div>
 125 <div class="ttc" id="helpers_8h_xhtml_a22f42fcf2077d951271df83b55c1a71a"><div class="ttname"><a href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a></div><div class="ttdeci">#define IMAGE_DECLARATION(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00068">helpers.h:68</a></div></div>
 126 <div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_aa0803d3eb7f6177d7ff8eb49cf0772ab"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#aa0803d3eb7f6177d7ff8eb49cf0772ab">arm_compute::test::validation::reference::hog_descriptor</a></div><div class="ttdeci">SimpleTensor&lt; T &gt; hog_descriptor(const SimpleTensor&lt; U &gt; &amp;src, BorderMode border_mode, U constant_border_value, const HOGInfo &amp;hog_info)</div><div class="ttdef"><b>Definition:</b> <a href="validation_2reference_2_h_o_g_descriptor_8cpp_source.xhtml#l00226">HOGDescriptor.cpp:226</a></div></div>
 127 <div class="ttc" id="helpers_8h_xhtml"><div class="ttname"><a href="helpers_8h.xhtml">helpers.h</a></div></div>
 128 <div class="ttc" id="helpers_8h_xhtml_aebe814363556c244be043b13e7969197"><div class="ttname"><a href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a></div><div class="ttdeci">#define CONVERT_TO_IMAGE_STRUCT(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00104">helpers.h:104</a></div></div>
 129 <div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_adbf67dcee294e673cf796f1ed8aeb6a4"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#adbf67dcee294e673cf796f1ed8aeb6a4">arm_compute::test::validation::dst</a></div><div class="ttdeci">CLTensor dst</div><div class="ttdef"><b>Definition:</b> <a href="_c_l_2_convolution_8cpp_source.xhtml#l00137">Convolution.cpp:137</a></div></div>
 130 <div class="ttc" id="struct_image_xhtml"><div class="ttname"><a href="struct_image.xhtml">Image</a></div><div class="ttdoc">Structure to hold Image information. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00142">helpers.h:142</a></div></div>
 131 <div class="ttc" id="types_8h_xhtml"><div class="ttname"><a href="types_8h.xhtml">types.h</a></div></div>
 132 <div class="ttc" id="struct_image_xhtml_acf52c23cbd7424606c10a606524e3e32"><div class="ttname"><a href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">Image::ptr</a></div><div class="ttdeci">__global uchar * ptr</div><div class="ttdoc">Pointer to the starting postion of the buffer. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00144">helpers.h:144</a></div></div>
 133 <div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a174ee1e2e66053db45c7fb4aa68920e7"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a174ee1e2e66053db45c7fb4aa68920e7">arm_compute::test::validation::reference::hog_detector</a></div><div class="ttdeci">std::vector&lt; DetectionWindow &gt; hog_detector(const SimpleTensor&lt; T &gt; &amp;src, const std::vector&lt; T &gt; &amp;descriptor, unsigned int max_num_detection_windows, const HOGInfo &amp;hog_info, const Size2D &amp;detection_window_stride, float threshold, uint16_t idx_class)</div><div class="ttdef"><b>Definition:</b> <a href="reference_2_h_o_g_detector_8cpp_source.xhtml#l00048">HOGDetector.cpp:48</a></div></div>
 134 <div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_acec6d8ad52a28972fa74e071c1a63b6a"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#acec6d8ad52a28972fa74e071c1a63b6a">arm_compute::test::validation::scale</a></div><div class="ttdeci">scale</div><div class="ttdef"><b>Definition:</b> <a href="_n_e_o_n_2_pixel_wise_multiplication_8cpp_source.xhtml#l00178">PixelWiseMultiplication.cpp:178</a></div></div>
 135 <div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_a7b8004eef325a40dd43eb80755610fff"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#a7b8004eef325a40dd43eb80755610fff">arm_compute::test::validation::b</a></div><div class="ttdeci">CLTensor b</div><div class="ttdef"><b>Definition:</b> <a href="validation_2_c_l_2_g_e_m_m_8cpp_source.xhtml#l00122">GEMM.cpp:122</a></div></div>
 136 <div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_a6743f0a130e8311e6f5b1a23df102472"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#a6743f0a130e8311e6f5b1a23df102472">arm_compute::test::validation::src</a></div><div class="ttdeci">convolution configure &amp; src</div><div class="ttdef"><b>Definition:</b> <a href="_c_l_2_convolution_8cpp_source.xhtml#l00147">Convolution.cpp:147</a></div></div>
 137 <div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_ae01f1c200a32d41a056d513760981326"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#ae01f1c200a32d41a056d513760981326">arm_compute::test::validation::reference::hog_block_normalization</a></div><div class="ttdeci">void hog_block_normalization(SimpleTensor&lt; T &gt; &amp;desc, const SimpleTensor&lt; T &gt; &amp;hog_space, const HOGInfo &amp;hog_info)</div><div class="ttdef"><b>Definition:</b> <a href="validation_2reference_2_h_o_g_descriptor_8cpp_source.xhtml#l00174">HOGDescriptor.cpp:174</a></div></div>
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