1 <!-- HTML header for doxygen 1.8.9.1-->
2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
3 <html xmlns="http://www.w3.org/1999/xhtml">
5 <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
6 <meta http-equiv="X-UA-Compatible" content="IE=9"/>
7 <meta name="generator" content="Doxygen 1.8.6"/>
8 <meta name="robots" content="NOINDEX, NOFOLLOW" /> <!-- Prevent indexing by search engines -->
9 <title>Compute Library: src/core/CL/cl_kernels/harris_corners.cl Source File</title>
10 <link href="tabs.css" rel="stylesheet" type="text/css"/>
11 <script type="text/javascript" src="jquery.js"></script>
12 <script type="text/javascript" src="dynsections.js"></script>
13 <link href="navtree.css" rel="stylesheet" type="text/css"/>
14 <script type="text/javascript" src="resize.js"></script>
15 <script type="text/javascript" src="navtree.js"></script>
16 <script type="text/javascript">
17 $(document).ready(initResizable);
18 $(window).load(resizeHeight);
20 <link href="search/search.css" rel="stylesheet" type="text/css"/>
21 <script type="text/javascript" src="search/search.js"></script>
22 <script type="text/javascript">
23 $(document).ready(function() { searchBox.OnSelectItem(0); });
25 <script type="text/x-mathjax-config">
27 extensions: ["tex2jax.js"],
28 jax: ["input/TeX","output/HTML-CSS"],
30 </script><script src="http://cdn.mathjax.org/mathjax/latest/MathJax.js"></script>
31 <link href="doxygen.css" rel="stylesheet" type="text/css" />
34 <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
36 <table cellspacing="0" cellpadding="0">
38 <tr style="height: 56px;">
39 <td style="padding-left: 0.5em;">
40 <div id="projectname">Compute Library
41  <span id="projectnumber">17.09</span>
48 <!-- end header part -->
49 <!-- Generated by Doxygen 1.8.6 -->
50 <script type="text/javascript">
51 var searchBox = new SearchBox("searchBox", "search",false,'Search');
53 <div id="navrow1" class="tabs">
55 <li><a href="index.xhtml"><span>Main Page</span></a></li>
56 <li><a href="pages.xhtml"><span>Related Pages</span></a></li>
57 <li><a href="namespaces.xhtml"><span>Namespaces</span></a></li>
58 <li><a href="annotated.xhtml"><span>Data Structures</span></a></li>
59 <li class="current"><a href="files.xhtml"><span>Files</span></a></li>
61 <div id="MSearchBox" class="MSearchBoxInactive">
63 <img id="MSearchSelect" src="search/mag_sel.png"
64 onmouseover="return searchBox.OnSearchSelectShow()"
65 onmouseout="return searchBox.OnSearchSelectHide()"
67 <input type="text" id="MSearchField" value="Search" accesskey="S"
68 onfocus="searchBox.OnSearchFieldFocus(true)"
69 onblur="searchBox.OnSearchFieldFocus(false)"
70 onkeyup="searchBox.OnSearchFieldChange(event)"/>
71 </span><span class="right">
72 <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
78 <div id="navrow2" class="tabs2">
80 <li><a href="files.xhtml"><span>File List</span></a></li>
81 <li><a href="globals.xhtml"><span>Globals</span></a></li>
85 <div id="side-nav" class="ui-resizable side-nav-resizable">
87 <div id="nav-tree-contents">
88 <div id="nav-sync" class="sync"></div>
91 <div id="splitbar" style="-moz-user-select:none;"
92 class="ui-resizable-handle">
95 <script type="text/javascript">
96 $(document).ready(function(){initNavTree('harris__corners_8cl_source.xhtml','');});
98 <div id="doc-content">
99 <!-- window showing the filter options -->
100 <div id="MSearchSelectWindow"
101 onmouseover="return searchBox.OnSearchSelectShow()"
102 onmouseout="return searchBox.OnSearchSelectHide()"
103 onkeydown="return searchBox.OnSearchSelectKey(event)">
104 <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark"> </span>Friends</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark"> </span>Macros</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(11)"><span class="SelectionMark"> </span>Pages</a></div>
106 <!-- iframe showing the search results (closed by default) -->
107 <div id="MSearchResultsWindow">
108 <iframe src="javascript:void(0)" frameborder="0"
109 name="MSearchResults" id="MSearchResults">
114 <div class="headertitle">
115 <div class="title">harris_corners.cl</div> </div>
117 <div class="contents">
118 <a href="harris__corners_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> <span class="comment">/*</span></div>
119 <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2016, 2017 ARM Limited.</span></div>
120 <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
121 <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * SPDX-License-Identifier: MIT</span></div>
122 <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
123 <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div>
124 <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * of this software and associated documentation files (the "Software"), to</span></div>
125 <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * deal in the Software without restriction, including without limitation the</span></div>
126 <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or</span></div>
127 <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * sell copies of the Software, and to permit persons to whom the Software is</span></div>
128 <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * furnished to do so, subject to the following conditions:</span></div>
129 <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div>
130 <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * The above copyright notice and this permission notice shall be included in all</span></div>
131 <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * copies or substantial portions of the Software.</span></div>
132 <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
133 <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div>
134 <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
135 <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div>
136 <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
137 <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div>
138 <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div>
139 <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * SOFTWARE.</span></div>
140 <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> */</span></div>
141 <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="helpers_8h.xhtml">helpers.h</a>"</span></div>
142 <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div>
143 <div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="harris__corners_8cl.xhtml#a2cf3b8c23c9f8f383d81d13bfff96e3d"> 53</a></span> __kernel <span class="keywordtype">void</span> <a class="code" href="harris__corners_8cl.xhtml#a2cf3b8c23c9f8f383d81d13bfff96e3d">harris_score_3x3</a>(</div>
144 <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(src_gx),</div>
145 <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(src_gy),</div>
146 <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(vc),</div>
147 <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordtype">float</span> sensitivity,</div>
148 <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordtype">float</span> strength_thresh,</div>
149 <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordtype">float</span> pow4_normalization_factor)</div>
150 <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> {</div>
151 <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="struct_image.xhtml">Image</a> src_gx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src_gx);</div>
152 <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="struct_image.xhtml">Image</a> src_gy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src_gy);</div>
153 <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="struct_image.xhtml">Image</a> vc = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(vc);</div>
154 <div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div>
155 <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">/* Gx^2, Gy^2 and Gx*Gy */</span></div>
156 <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  float4 gx2 = (float4)0.0f;</div>
157 <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  float4 gy2 = (float4)0.0f;</div>
158 <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  float4 gxgy = (float4)0.0f;</div>
159 <div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div>
160 <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">/* Row0 */</span></div>
161 <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 8)</div>
162 <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  temp_gx = vload8(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src_gx, -1, -1));</div>
163 <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 8)</div>
164 <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  temp_gy = vload8(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src_gy, -1, -1));</div>
165 <div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
166 <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  float4 l_gx = convert_float4(temp_gx.s0123);</div>
167 <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  float4 m_gx = convert_float4(temp_gx.s1234);</div>
168 <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  float4 r_gx = convert_float4(temp_gx.s2345);</div>
169 <div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
170 <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  float4 l_gy = convert_float4(temp_gy.s0123);</div>
171 <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  float4 m_gy = convert_float4(temp_gy.s1234);</div>
172 <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  float4 r_gy = convert_float4(temp_gy.s2345);</div>
173 <div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
174 <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  gx2 += (l_gx * l_gx) + (m_gx * m_gx) + (r_gx * r_gx);</div>
175 <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  gy2 += (l_gy * l_gy) + (m_gy * m_gy) + (r_gy * r_gy);</div>
176 <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  gxgy += (l_gx * l_gy) + (m_gx * m_gy) + (r_gx * r_gy);</div>
177 <div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
178 <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">/* Row1 */</span></div>
179 <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  temp_gx = vload8(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src_gx, -1, 0));</div>
180 <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  temp_gy = vload8(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src_gy, -1, 0));</div>
181 <div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
182 <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  l_gx = convert_float4(temp_gx.s0123);</div>
183 <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  m_gx = convert_float4(temp_gx.s1234);</div>
184 <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  r_gx = convert_float4(temp_gx.s2345);</div>
185 <div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
186 <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  l_gy = convert_float4(temp_gy.s0123);</div>
187 <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  m_gy = convert_float4(temp_gy.s1234);</div>
188 <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  r_gy = convert_float4(temp_gy.s2345);</div>
189 <div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
190 <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  gx2 += (l_gx * l_gx) + (m_gx * m_gx) + (r_gx * r_gx);</div>
191 <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  gy2 += (l_gy * l_gy) + (m_gy * m_gy) + (r_gy * r_gy);</div>
192 <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  gxgy += (l_gx * l_gy) + (m_gx * m_gy) + (r_gx * r_gy);</div>
193 <div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
194 <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">/* Row2 */</span></div>
195 <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  temp_gx = vload8(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src_gx, -1, 1));</div>
196 <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  temp_gy = vload8(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(&src_gy, -1, 1));</div>
197 <div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
198 <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  l_gx = convert_float4(temp_gx.s0123);</div>
199 <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  m_gx = convert_float4(temp_gx.s1234);</div>
200 <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  r_gx = convert_float4(temp_gx.s2345);</div>
201 <div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
202 <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  l_gy = convert_float4(temp_gy.s0123);</div>
203 <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  m_gy = convert_float4(temp_gy.s1234);</div>
204 <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  r_gy = convert_float4(temp_gy.s2345);</div>
205 <div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
206 <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  gx2 += (l_gx * l_gx) + (m_gx * m_gx) + (r_gx * r_gx);</div>
207 <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  gy2 += (l_gy * l_gy) + (m_gy * m_gy) + (r_gy * r_gy);</div>
208 <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  gxgy += (l_gx * l_gy) + (m_gx * m_gy) + (r_gx * r_gy);</div>
209 <div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div>
210 <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">/* Compute trace and determinant */</span></div>
211 <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  float4 trace = gx2 + gy2;</div>
212 <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  float4 det = gx2 * gy2 - (gxgy * gxgy);</div>
213 <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div>
214 <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="comment">/* Compute harris score */</span></div>
215 <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  float4 mc = (det - (sensitivity * (trace * trace))) * pow4_normalization_factor;</div>
216 <div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
217 <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  mc = select(0.0f, mc, mc > (float4)strength_thresh);</div>
218 <div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div>
219 <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  vstore4(mc, 0, (__global <span class="keywordtype">float</span> *)vc.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div>
220 <div class="line"><a name="l00130"></a><span class="lineno"> 130</span> }</div>
221 <div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
222 <div class="line"><a name="l00138"></a><span class="lineno"><a class="line" href="harris__corners_8cl.xhtml#a71d10f5d9e840b6d270620a2cd856926"> 138</a></span> <span class="keyword">inline</span> float16 <a class="code" href="harris__corners_8cl.xhtml#a71d10f5d9e840b6d270620a2cd856926">harris_score_1x5</a>(<a class="code" href="struct_image.xhtml">Image</a> *src_gx, <a class="code" href="struct_image.xhtml">Image</a> *src_gy, <span class="keywordtype">int</span> row)</div>
223 <div class="line"><a name="l00139"></a><span class="lineno"> 139</span> {</div>
224 <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  float4 gx2 = 0.0f;</div>
225 <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  float4 gy2 = 0.0f;</div>
226 <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  float4 gxgy = 0.0f;</div>
227 <div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
228 <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="comment">/* Row */</span></div>
229 <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 8)</div>
230 <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  temp_gx = vload8(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src_gx, -2, row));</div>
231 <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 8)</div>
232 <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  temp_gy = vload8(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src_gy, -2, row));</div>
233 <div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div>
234 <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  float4 gx = convert_float4(temp_gx.s0123);</div>
235 <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  float4 gy = convert_float4(temp_gy.s0123);</div>
236 <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  gx2 += (gx * gx);</div>
237 <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  gy2 += (gy * gy);</div>
238 <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  gxgy += (gx * gy);</div>
239 <div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div>
240 <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  gx = convert_float4(temp_gx.s1234);</div>
241 <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  gy = convert_float4(temp_gy.s1234);</div>
242 <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  gx2 += (gx * gx);</div>
243 <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  gy2 += (gy * gy);</div>
244 <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  gxgy += (gx * gy);</div>
245 <div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div>
246 <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  gx = convert_float4(temp_gx.s2345);</div>
247 <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  gy = convert_float4(temp_gy.s2345);</div>
248 <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  gx2 += (gx * gx);</div>
249 <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  gy2 += (gy * gy);</div>
250 <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  gxgy += (gx * gy);</div>
251 <div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
252 <div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  gx = convert_float4(temp_gx.s3456);</div>
253 <div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  gy = convert_float4(temp_gy.s3456);</div>
254 <div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  gx2 += (gx * gx);</div>
255 <div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  gy2 += (gy * gy);</div>
256 <div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  gxgy += (gx * gy);</div>
257 <div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
258 <div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  gx = convert_float4(temp_gx.s4567);</div>
259 <div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  gy = convert_float4(temp_gy.s4567);</div>
260 <div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  gx2 += (gx * gx);</div>
261 <div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  gy2 += (gy * gy);</div>
262 <div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  gxgy += (gx * gy);</div>
263 <div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div>
264 <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">return</span> (float16)(gx2, gy2, gxgy, (float4)0);</div>
265 <div class="line"><a name="l00181"></a><span class="lineno"> 181</span> }</div>
266 <div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div>
267 <div class="line"><a name="l00210"></a><span class="lineno"><a class="line" href="harris__corners_8cl.xhtml#a0f0af2add0a40f2f4b8a14f409186a02"> 210</a></span> __kernel <span class="keywordtype">void</span> <a class="code" href="harris__corners_8cl.xhtml#a0f0af2add0a40f2f4b8a14f409186a02">harris_score_5x5</a>(</div>
268 <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(src_gx),</div>
269 <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(src_gy),</div>
270 <div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(vc),</div>
271 <div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordtype">float</span> sensitivity,</div>
272 <div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordtype">float</span> strength_thresh,</div>
273 <div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordtype">float</span> pow4_normalization_factor)</div>
274 <div class="line"><a name="l00217"></a><span class="lineno"> 217</span> {</div>
275 <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <a class="code" href="struct_image.xhtml">Image</a> src_gx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src_gx);</div>
276 <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <a class="code" href="struct_image.xhtml">Image</a> src_gy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src_gy);</div>
277 <div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <a class="code" href="struct_image.xhtml">Image</a> vc = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(vc);</div>
278 <div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div>
279 <div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="comment">/* Gx^2, Gy^2 and Gx*Gy */</span></div>
280 <div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  float16 res = (float16)0.0f;</div>
281 <div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div>
282 <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="comment">/* Compute row */</span></div>
283 <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = -2; i < 3; i++)</div>
284 <div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  {</div>
285 <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  res += <a class="code" href="harris__corners_8cl.xhtml#a71d10f5d9e840b6d270620a2cd856926">harris_score_1x5</a>(&src_gx, &src_gy, i);</div>
286 <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  }</div>
287 <div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div>
288 <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  float4 gx2 = res.s0123;</div>
289 <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  float4 gy2 = res.s4567;</div>
290 <div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  float4 gxgy = res.s89AB;</div>
291 <div class="line"><a name="l00234"></a><span class="lineno"> 234</span> </div>
292 <div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="comment">/* Compute trace and determinant */</span></div>
293 <div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  float4 trace = gx2 + gy2;</div>
294 <div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  float4 det = gx2 * gy2 - (gxgy * gxgy);</div>
295 <div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div>
296 <div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="comment">/* Compute harris score */</span></div>
297 <div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  float4 mc = (det - (sensitivity * (trace * trace))) * pow4_normalization_factor;</div>
298 <div class="line"><a name="l00241"></a><span class="lineno"> 241</span> </div>
299 <div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  mc = select(0.0f, mc, mc > (float4)strength_thresh);</div>
300 <div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
301 <div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  vstore4(mc, 0, (__global <span class="keywordtype">float</span> *)vc.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div>
302 <div class="line"><a name="l00245"></a><span class="lineno"> 245</span> }</div>
303 <div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div>
304 <div class="line"><a name="l00253"></a><span class="lineno"><a class="line" href="harris__corners_8cl.xhtml#a2fadfd6378605824bb7926e1ac0123fb"> 253</a></span> <span class="keyword">inline</span> float16 <a class="code" href="harris__corners_8cl.xhtml#a2fadfd6378605824bb7926e1ac0123fb">harris_score_1x7</a>(<a class="code" href="struct_image.xhtml">Image</a> *src_gx, <a class="code" href="struct_image.xhtml">Image</a> *src_gy, <span class="keywordtype">int</span> row)</div>
305 <div class="line"><a name="l00254"></a><span class="lineno"> 254</span> {</div>
306 <div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  float4 gx2 = 0.0f;</div>
307 <div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  float4 gy2 = 0.0f;</div>
308 <div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  float4 gxgy = 0.0f;</div>
309 <div class="line"><a name="l00258"></a><span class="lineno"> 258</span> </div>
310 <div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="comment">/* Row */</span></div>
311 <div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 8)</div>
312 <div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  temp_gx0 = vload8(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src_gx, -3, row));</div>
313 <div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 8)</div>
314 <div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  temp_gy0 = vload8(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src_gy, -3, row));</div>
315 <div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 2)</div>
316 <div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  temp_gx1 = vload2(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src_gx, 5, row));</div>
317 <div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 2)</div>
318 <div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  temp_gy1 = vload2(0, (__global <a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a> *)<a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>(src_gy, 5, row));</div>
319 <div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div>
320 <div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  float4 gx = convert_float4(temp_gx0.s0123);</div>
321 <div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  float4 gy = convert_float4(temp_gy0.s0123);</div>
322 <div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  gx2 += (gx * gx);</div>
323 <div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  gy2 += (gy * gy);</div>
324 <div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  gxgy += (gx * gy);</div>
325 <div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div>
326 <div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  gx = convert_float4(temp_gx0.s1234);</div>
327 <div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  gy = convert_float4(temp_gy0.s1234);</div>
328 <div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  gx2 += (gx * gx);</div>
329 <div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  gy2 += (gy * gy);</div>
330 <div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  gxgy += (gx * gy);</div>
331 <div class="line"><a name="l00280"></a><span class="lineno"> 280</span> </div>
332 <div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  gx = convert_float4(temp_gx0.s2345);</div>
333 <div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  gy = convert_float4(temp_gy0.s2345);</div>
334 <div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  gx2 += (gx * gx);</div>
335 <div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  gy2 += (gy * gy);</div>
336 <div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  gxgy += (gx * gy);</div>
337 <div class="line"><a name="l00286"></a><span class="lineno"> 286</span> </div>
338 <div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  gx = convert_float4(temp_gx0.s3456);</div>
339 <div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  gy = convert_float4(temp_gy0.s3456);</div>
340 <div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  gx2 += (gx * gx);</div>
341 <div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  gy2 += (gy * gy);</div>
342 <div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  gxgy += (gx * gy);</div>
343 <div class="line"><a name="l00292"></a><span class="lineno"> 292</span> </div>
344 <div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  gx = convert_float4(temp_gx0.s4567);</div>
345 <div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  gy = convert_float4(temp_gy0.s4567);</div>
346 <div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  gx2 += (gx * gx);</div>
347 <div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  gy2 += (gy * gy);</div>
348 <div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  gxgy += (gx * gy);</div>
349 <div class="line"><a name="l00298"></a><span class="lineno"> 298</span> </div>
350 <div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  gx = convert_float4((<a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 4))(temp_gx0.s567, temp_gx1.s0));</div>
351 <div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  gy = convert_float4((<a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 4))(temp_gy0.s567, temp_gy1.s0));</div>
352 <div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  gx2 += (gx * gx);</div>
353 <div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  gy2 += (gy * gy);</div>
354 <div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  gxgy += (gx * gy);</div>
355 <div class="line"><a name="l00304"></a><span class="lineno"> 304</span> </div>
356 <div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  gx = convert_float4((<a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 4))(temp_gx0.s67, temp_gx1.s01));</div>
357 <div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  gy = convert_float4((<a class="code" href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a>(<a class="code" href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a>, 4))(temp_gy0.s67, temp_gy1.s01));</div>
358 <div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  gx2 += (gx * gx);</div>
359 <div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  gy2 += (gy * gy);</div>
360 <div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  gxgy += (gx * gy);</div>
361 <div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div>
362 <div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordflow">return</span> (float16)(gx2, gy2, gxgy, (float4)0);</div>
363 <div class="line"><a name="l00312"></a><span class="lineno"> 312</span> }</div>
364 <div class="line"><a name="l00313"></a><span class="lineno"> 313</span> </div>
365 <div class="line"><a name="l00341"></a><span class="lineno"><a class="line" href="harris__corners_8cl.xhtml#a468ac2728816485f017f51faeb0a7d65"> 341</a></span> __kernel <span class="keywordtype">void</span> <a class="code" href="harris__corners_8cl.xhtml#a468ac2728816485f017f51faeb0a7d65">harris_score_7x7</a>(</div>
366 <div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(src_gx),</div>
367 <div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(src_gy),</div>
368 <div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <a class="code" href="helpers_8h.xhtml#a22f42fcf2077d951271df83b55c1a71a">IMAGE_DECLARATION</a>(vc),</div>
369 <div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keywordtype">float</span> sensitivity,</div>
370 <div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordtype">float</span> strength_thresh,</div>
371 <div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keywordtype">float</span> pow4_normalization_factor)</div>
372 <div class="line"><a name="l00348"></a><span class="lineno"> 348</span> {</div>
373 <div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <a class="code" href="struct_image.xhtml">Image</a> src_gx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src_gx);</div>
374 <div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <a class="code" href="struct_image.xhtml">Image</a> src_gy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(src_gy);</div>
375 <div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <a class="code" href="struct_image.xhtml">Image</a> vc = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(vc);</div>
376 <div class="line"><a name="l00352"></a><span class="lineno"> 352</span> </div>
377 <div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="comment">/* Gx^2, Gy^2 and Gx*Gy */</span></div>
378 <div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  float16 res = (float16)0.0f;</div>
379 <div class="line"><a name="l00355"></a><span class="lineno"> 355</span> </div>
380 <div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="comment">/* Compute row */</span></div>
381 <div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = -3; i < 4; i++)</div>
382 <div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  {</div>
383 <div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  res += <a class="code" href="harris__corners_8cl.xhtml#a2fadfd6378605824bb7926e1ac0123fb">harris_score_1x7</a>(&src_gx, &src_gy, i);</div>
384 <div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  }</div>
385 <div class="line"><a name="l00361"></a><span class="lineno"> 361</span> </div>
386 <div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  float4 gx2 = res.s0123;</div>
387 <div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  float4 gy2 = res.s4567;</div>
388 <div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  float4 gxgy = res.s89AB;</div>
389 <div class="line"><a name="l00365"></a><span class="lineno"> 365</span> </div>
390 <div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="comment">/* Compute trace and determinant */</span></div>
391 <div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  float4 trace = gx2 + gy2;</div>
392 <div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  float4 det = gx2 * gy2 - (gxgy * gxgy);</div>
393 <div class="line"><a name="l00369"></a><span class="lineno"> 369</span> </div>
394 <div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="comment">/* Compute harris score */</span></div>
395 <div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  float4 mc = (det - (sensitivity * (trace * trace))) * pow4_normalization_factor;</div>
396 <div class="line"><a name="l00372"></a><span class="lineno"> 372</span> </div>
397 <div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  mc = select(0.0f, mc, mc > (float4)strength_thresh);</div>
398 <div class="line"><a name="l00374"></a><span class="lineno"> 374</span> </div>
399 <div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  vstore4(mc, 0, (__global <span class="keywordtype">float</span> *)vc.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div>
400 <div class="line"><a name="l00376"></a><span class="lineno"> 376</span> }</div>
401 <div class="ttc" id="convolution3x3_8cl_xhtml_afb8c72ce35c4a1f4a2588d6573e54aa1"><div class="ttname"><a href="convolution3x3_8cl.xhtml#afb8c72ce35c4a1f4a2588d6573e54aa1">DATA_TYPE</a></div><div class="ttdeci">#define DATA_TYPE</div><div class="ttdef"><b>Definition:</b> <a href="convolution3x3_8cl_source.xhtml#l00027">convolution3x3.cl:27</a></div></div>
402 <div class="ttc" id="harris__corners_8cl_xhtml_a468ac2728816485f017f51faeb0a7d65"><div class="ttname"><a href="harris__corners_8cl.xhtml#a468ac2728816485f017f51faeb0a7d65">harris_score_7x7</a></div><div class="ttdeci">__kernel void harris_score_7x7(__global uchar *src_gx_ptr, uint src_gx_stride_x, uint src_gx_step_x, uint src_gx_stride_y, uint src_gx_step_y, uint src_gx_offset_first_element_in_bytes, __global uchar *src_gy_ptr, uint src_gy_stride_x, uint src_gy_step_x, uint src_gy_stride_y, uint src_gy_step_y, uint src_gy_offset_first_element_in_bytes, __global uchar *vc_ptr, uint vc_stride_x, uint vc_step_x, uint vc_stride_y, uint vc_step_y, uint vc_offset_first_element_in_bytes, float sensitivity, float strength_thresh, float pow4_normalization_factor)</div><div class="ttdoc">Function running harris score on 7x7 block size. </div><div class="ttdef"><b>Definition:</b> <a href="harris__corners_8cl_source.xhtml#l00341">harris_corners.cl:341</a></div></div>
403 <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#l00057">helpers.h:57</a></div></div>
404 <div class="ttc" id="harris__corners_8cl_xhtml_a71d10f5d9e840b6d270620a2cd856926"><div class="ttname"><a href="harris__corners_8cl.xhtml#a71d10f5d9e840b6d270620a2cd856926">harris_score_1x5</a></div><div class="ttdeci">float16 harris_score_1x5(Image *src_gx, Image *src_gy, int row)</div><div class="ttdoc">Function for calculating harris score 1x5. </div><div class="ttdef"><b>Definition:</b> <a href="harris__corners_8cl_source.xhtml#l00138">harris_corners.cl:138</a></div></div>
405 <div class="ttc" id="helpers_8h_xhtml_a009469e4d9b8fce3b6d5e97d2077827d"><div class="ttname"><a href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a></div><div class="ttdeci">__global uchar * offset(const Image *img, int x, int y)</div><div class="ttdoc">Get the pointer position of a Image. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00292">helpers.h:292</a></div></div>
406 <div class="ttc" id="helpers_8h_xhtml"><div class="ttname"><a href="helpers_8h.xhtml">helpers.h</a></div></div>
407 <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#l00093">helpers.h:93</a></div></div>
408 <div class="ttc" id="harris__corners_8cl_xhtml_a2cf3b8c23c9f8f383d81d13bfff96e3d"><div class="ttname"><a href="harris__corners_8cl.xhtml#a2cf3b8c23c9f8f383d81d13bfff96e3d">harris_score_3x3</a></div><div class="ttdeci">__kernel void harris_score_3x3(__global uchar *src_gx_ptr, uint src_gx_stride_x, uint src_gx_step_x, uint src_gx_stride_y, uint src_gx_step_y, uint src_gx_offset_first_element_in_bytes, __global uchar *src_gy_ptr, uint src_gy_stride_x, uint src_gy_step_x, uint src_gy_stride_y, uint src_gy_step_y, uint src_gy_offset_first_element_in_bytes, __global uchar *vc_ptr, uint vc_stride_x, uint vc_step_x, uint vc_stride_y, uint vc_step_y, uint vc_offset_first_element_in_bytes, float sensitivity, float strength_thresh, float pow4_normalization_factor)</div><div class="ttdoc">Function running harris score on 3x3 block size. </div><div class="ttdef"><b>Definition:</b> <a href="harris__corners_8cl_source.xhtml#l00053">harris_corners.cl:53</a></div></div>
409 <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#l00131">helpers.h:131</a></div></div>
410 <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#l00133">helpers.h:133</a></div></div>
411 <div class="ttc" id="fixed__point_8h_xhtml_a36f754c05b6fddf6df0d8d0a74f8159f"><div class="ttname"><a href="fixed__point_8h.xhtml#a36f754c05b6fddf6df0d8d0a74f8159f">VEC_DATA_TYPE</a></div><div class="ttdeci">#define VEC_DATA_TYPE(type, size)</div><div class="ttdef"><b>Definition:</b> <a href="fixed__point_8h_source.xhtml#l00093">fixed_point.h:93</a></div></div>
412 <div class="ttc" id="harris__corners_8cl_xhtml_a0f0af2add0a40f2f4b8a14f409186a02"><div class="ttname"><a href="harris__corners_8cl.xhtml#a0f0af2add0a40f2f4b8a14f409186a02">harris_score_5x5</a></div><div class="ttdeci">__kernel void harris_score_5x5(__global uchar *src_gx_ptr, uint src_gx_stride_x, uint src_gx_step_x, uint src_gx_stride_y, uint src_gx_step_y, uint src_gx_offset_first_element_in_bytes, __global uchar *src_gy_ptr, uint src_gy_stride_x, uint src_gy_step_x, uint src_gy_stride_y, uint src_gy_step_y, uint src_gy_offset_first_element_in_bytes, __global uchar *vc_ptr, uint vc_stride_x, uint vc_step_x, uint vc_stride_y, uint vc_step_y, uint vc_offset_first_element_in_bytes, float sensitivity, float strength_thresh, float pow4_normalization_factor)</div><div class="ttdoc">Function running harris score on 5x5 block size. </div><div class="ttdef"><b>Definition:</b> <a href="harris__corners_8cl_source.xhtml#l00210">harris_corners.cl:210</a></div></div>
413 <div class="ttc" id="harris__corners_8cl_xhtml_a2fadfd6378605824bb7926e1ac0123fb"><div class="ttname"><a href="harris__corners_8cl.xhtml#a2fadfd6378605824bb7926e1ac0123fb">harris_score_1x7</a></div><div class="ttdeci">float16 harris_score_1x7(Image *src_gx, Image *src_gy, int row)</div><div class="ttdoc">Function for calculating harris score 1x7. </div><div class="ttdef"><b>Definition:</b> <a href="harris__corners_8cl_source.xhtml#l00253">harris_corners.cl:253</a></div></div>
414 </div><!-- fragment --></div><!-- contents -->
415 </div><!-- doc-content -->
416 <!-- start footer part -->
417 <div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
419 <li class="navelem"><a class="el" href="dir_55b5a5006e943fb664ff8cff3cfe7768.xhtml">src</a></li><li class="navelem"><a class="el" href="dir_f6c3ae42d7e27145d0a3c3e38ca1c000.xhtml">core</a></li><li class="navelem"><a class="el" href="dir_1b7ae9123c88e650426d50d95c19d414.xhtml">CL</a></li><li class="navelem"><a class="el" href="dir_b7c3d80b0dadb2139bc73b7161751c12.xhtml">cl_kernels</a></li><li class="navelem"><a class="el" href="harris__corners_8cl.xhtml">harris_corners.cl</a></li>
420 <li class="footer">Generated on Thu Sep 28 2017 14:37:50 for Compute Library by
421 <a href="http://www.doxygen.org/index.html">
422 <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.6 </li>
projects / platform / upstream / armcl.git / blob