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 117   <div class="summary">
 118 <a href="#pub-methods">Public Member Functions</a>  </div>
 119   <div class="headertitle">
 120 <div class="title">NEOpticalFlow Class Reference</div>  </div>
 121 </div><!--header-->
 122 <div class="contents">
 123
 124 <p>Basic function to execute optical flow.
 125  <a href="classarm__compute_1_1_n_e_optical_flow.xhtml#details">More...</a></p>
 126
 127 <p><code>#include &lt;<a class="el" href="_n_e_optical_flow_8h_source.xhtml">NEOpticalFlow.h</a>&gt;</code></p>
 128 <div class="dynheader">
 129 Collaboration diagram for NEOpticalFlow:</div>
 130 <div class="dyncontent">
 131 <div class="center"><iframe scrolling="no" frameborder="0" src="classarm__compute_1_1_n_e_optical_flow__coll__graph.svg" width="122" height="112"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe>
 132 </div>
 133 <center><span class="legend">[<a target="top" href="graph_legend.xhtml">legend</a>]</span></center></div>
 134 <table class="memberdecls">
 135 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
 136 Public Member Functions</h2></td></tr>
 137 <tr class="memitem:a4a73c29e87005e43223003f15d71671c"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml#a4a73c29e87005e43223003f15d71671c">NEOpticalFlow</a> ()</td></tr>
 138 <tr class="memdesc:a4a73c29e87005e43223003f15d71671c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor.  <a href="#a4a73c29e87005e43223003f15d71671c">More...</a><br /></td></tr>
 139 <tr class="separator:a4a73c29e87005e43223003f15d71671c"><td class="memSeparator" colspan="2">&#160;</td></tr>
 140 <tr class="memitem:ad5dfdcf45ad38c48cd725b0fdc675b34"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml#ad5dfdcf45ad38c48cd725b0fdc675b34">NEOpticalFlow</a> (const <a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml">NEOpticalFlow</a> &amp;)=delete</td></tr>
 141 <tr class="memdesc:ad5dfdcf45ad38c48cd725b0fdc675b34"><td class="mdescLeft">&#160;</td><td class="mdescRight">Prevent instances of this class from being copied (As this class contains pointers)  <a href="#ad5dfdcf45ad38c48cd725b0fdc675b34">More...</a><br /></td></tr>
 142 <tr class="separator:ad5dfdcf45ad38c48cd725b0fdc675b34"><td class="memSeparator" colspan="2">&#160;</td></tr>
 143 <tr class="memitem:a21df3a34e101b1a8f689aa6326b90441"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml">NEOpticalFlow</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml#a21df3a34e101b1a8f689aa6326b90441">operator=</a> (const <a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml">NEOpticalFlow</a> &amp;)=delete</td></tr>
 144 <tr class="memdesc:a21df3a34e101b1a8f689aa6326b90441"><td class="mdescLeft">&#160;</td><td class="mdescRight">Prevent instances of this class from being copied (As this class contains pointers)  <a href="#a21df3a34e101b1a8f689aa6326b90441">More...</a><br /></td></tr>
 145 <tr class="separator:a21df3a34e101b1a8f689aa6326b90441"><td class="memSeparator" colspan="2">&#160;</td></tr>
 146 <tr class="memitem:a36071f8f326ffdbfaf95fded57d6771c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml#a36071f8f326ffdbfaf95fded57d6771c">configure</a> (const <a class="el" href="classarm__compute_1_1_pyramid.xhtml">Pyramid</a> *old_pyramid, const <a class="el" href="classarm__compute_1_1_pyramid.xhtml">Pyramid</a> *new_pyramid, const <a class="el" href="namespacearm__compute.xhtml#ab56a557a5fdf97819f23c35c24f0b0d2">IKeyPointArray</a> *old_points, const <a class="el" href="namespacearm__compute.xhtml#ab56a557a5fdf97819f23c35c24f0b0d2">IKeyPointArray</a> *new_points_estimates, <a class="el" href="namespacearm__compute.xhtml#ab56a557a5fdf97819f23c35c24f0b0d2">IKeyPointArray</a> *new_points, <a class="el" href="namespacearm__compute.xhtml#a08c1503414e23f5dd10ff83492685453">Termination</a> termination, float epsilon, unsigned int num_iterations, size_t window_dimension, bool use_initial_estimate, <a class="el" href="namespacearm__compute.xhtml#a15a05537a472ee742404821851529327">BorderMode</a> border_mode, uint8_t constant_border_value=0)</td></tr>
 147 <tr class="memdesc:a36071f8f326ffdbfaf95fded57d6771c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Initialise the function input and output.  <a href="#a36071f8f326ffdbfaf95fded57d6771c">More...</a><br /></td></tr>
 148 <tr class="separator:a36071f8f326ffdbfaf95fded57d6771c"><td class="memSeparator" colspan="2">&#160;</td></tr>
 149 <tr class="memitem:ad1717410afd0be936c6213a63c8005fb"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml#ad1717410afd0be936c6213a63c8005fb">run</a> () override</td></tr>
 150 <tr class="memdesc:ad1717410afd0be936c6213a63c8005fb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Run the kernels contained in the function.  <a href="#ad1717410afd0be936c6213a63c8005fb">More...</a><br /></td></tr>
 151 <tr class="separator:ad1717410afd0be936c6213a63c8005fb"><td class="memSeparator" colspan="2">&#160;</td></tr>
 152 <tr class="inherit_header pub_methods_classarm__compute_1_1_i_function"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classarm__compute_1_1_i_function')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="classarm__compute_1_1_i_function.xhtml">IFunction</a></td></tr>
 153 <tr class="memitem:ab921ecc3f3f6ae2b4bd61f3e1998d8c4 inherit pub_methods_classarm__compute_1_1_i_function"><td class="memItemLeft" align="right" valign="top">virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1_i_function.xhtml#ab921ecc3f3f6ae2b4bd61f3e1998d8c4">~IFunction</a> ()=default</td></tr>
 154 <tr class="memdesc:ab921ecc3f3f6ae2b4bd61f3e1998d8c4 inherit pub_methods_classarm__compute_1_1_i_function"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor.  <a href="#ab921ecc3f3f6ae2b4bd61f3e1998d8c4">More...</a><br /></td></tr>
 155 <tr class="separator:ab921ecc3f3f6ae2b4bd61f3e1998d8c4 inherit pub_methods_classarm__compute_1_1_i_function"><td class="memSeparator" colspan="2">&#160;</td></tr>
 156 </table>
 157 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
 158 <div class="textblock"><p>Basic function to execute optical flow. </p>
 159 <p>This function calls the following NEON kernels and functions:</p>
 160 <ol type="1">
 161 <li><a class="el" href="classarm__compute_1_1_n_e_scharr3x3.xhtml">NEScharr3x3</a></li>
 162 <li><a class="el" href="classarm__compute_1_1_n_e_l_k_tracker_kernel.xhtml">NELKTrackerKernel</a> </li>
 163 </ol>
 164
 165 <p>Definition at line <a class="el" href="_n_e_optical_flow_8h_source.xhtml#l00050">50</a> of file <a class="el" href="_n_e_optical_flow_8h_source.xhtml">NEOpticalFlow.h</a>.</p>
 166 </div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
 167 <a class="anchor" id="a4a73c29e87005e43223003f15d71671c"></a>
 168 <div class="memitem">
 169 <div class="memproto">
 170       <table class="memname">
 171         <tr>
 172           <td class="memname"><a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml">NEOpticalFlow</a> </td>
 173           <td>(</td>
 174           <td class="paramname"></td><td>)</td>
 175           <td></td>
 176         </tr>
 177       </table>
 178 </div><div class="memdoc">
 179
 180 <p>Constructor. </p>
 181
 182 </div>
 183 </div>
 184 <a class="anchor" id="ad5dfdcf45ad38c48cd725b0fdc675b34"></a>
 185 <div class="memitem">
 186 <div class="memproto">
 187 <table class="mlabels">
 188   <tr>
 189   <td class="mlabels-left">
 190       <table class="memname">
 191         <tr>
 192           <td class="memname"><a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml">NEOpticalFlow</a> </td>
 193           <td>(</td>
 194           <td class="paramtype">const <a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml">NEOpticalFlow</a> &amp;&#160;</td>
 195           <td class="paramname"></td><td>)</td>
 196           <td></td>
 197         </tr>
 198       </table>
 199   </td>
 200   <td class="mlabels-right">
 201 <span class="mlabels"><span class="mlabel">delete</span></span>  </td>
 202   </tr>
 203 </table>
 204 </div><div class="memdoc">
 205
 206 <p>Prevent instances of this class from being copied (As this class contains pointers) </p>
 207
 208 </div>
 209 </div>
 210 <h2 class="groupheader">Member Function Documentation</h2>
 211 <a class="anchor" id="a36071f8f326ffdbfaf95fded57d6771c"></a>
 212 <div class="memitem">
 213 <div class="memproto">
 214       <table class="memname">
 215         <tr>
 216           <td class="memname">void configure </td>
 217           <td>(</td>
 218           <td class="paramtype">const <a class="el" href="classarm__compute_1_1_pyramid.xhtml">Pyramid</a> *&#160;</td>
 219           <td class="paramname"><em>old_pyramid</em>, </td>
 220         </tr>
 221         <tr>
 222           <td class="paramkey"></td>
 223           <td></td>
 224           <td class="paramtype">const <a class="el" href="classarm__compute_1_1_pyramid.xhtml">Pyramid</a> *&#160;</td>
 225           <td class="paramname"><em>new_pyramid</em>, </td>
 226         </tr>
 227         <tr>
 228           <td class="paramkey"></td>
 229           <td></td>
 230           <td class="paramtype">const <a class="el" href="namespacearm__compute.xhtml#ab56a557a5fdf97819f23c35c24f0b0d2">IKeyPointArray</a> *&#160;</td>
 231           <td class="paramname"><em>old_points</em>, </td>
 232         </tr>
 233         <tr>
 234           <td class="paramkey"></td>
 235           <td></td>
 236           <td class="paramtype">const <a class="el" href="namespacearm__compute.xhtml#ab56a557a5fdf97819f23c35c24f0b0d2">IKeyPointArray</a> *&#160;</td>
 237           <td class="paramname"><em>new_points_estimates</em>, </td>
 238         </tr>
 239         <tr>
 240           <td class="paramkey"></td>
 241           <td></td>
 242           <td class="paramtype"><a class="el" href="namespacearm__compute.xhtml#ab56a557a5fdf97819f23c35c24f0b0d2">IKeyPointArray</a> *&#160;</td>
 243           <td class="paramname"><em>new_points</em>, </td>
 244         </tr>
 245         <tr>
 246           <td class="paramkey"></td>
 247           <td></td>
 248           <td class="paramtype"><a class="el" href="namespacearm__compute.xhtml#a08c1503414e23f5dd10ff83492685453">Termination</a>&#160;</td>
 249           <td class="paramname"><em>termination</em>, </td>
 250         </tr>
 251         <tr>
 252           <td class="paramkey"></td>
 253           <td></td>
 254           <td class="paramtype">float&#160;</td>
 255           <td class="paramname"><em>epsilon</em>, </td>
 256         </tr>
 257         <tr>
 258           <td class="paramkey"></td>
 259           <td></td>
 260           <td class="paramtype">unsigned int&#160;</td>
 261           <td class="paramname"><em>num_iterations</em>, </td>
 262         </tr>
 263         <tr>
 264           <td class="paramkey"></td>
 265           <td></td>
 266           <td class="paramtype">size_t&#160;</td>
 267           <td class="paramname"><em>window_dimension</em>, </td>
 268         </tr>
 269         <tr>
 270           <td class="paramkey"></td>
 271           <td></td>
 272           <td class="paramtype">bool&#160;</td>
 273           <td class="paramname"><em>use_initial_estimate</em>, </td>
 274         </tr>
 275         <tr>
 276           <td class="paramkey"></td>
 277           <td></td>
 278           <td class="paramtype"><a class="el" href="namespacearm__compute.xhtml#a15a05537a472ee742404821851529327">BorderMode</a>&#160;</td>
 279           <td class="paramname"><em>border_mode</em>, </td>
 280         </tr>
 281         <tr>
 282           <td class="paramkey"></td>
 283           <td></td>
 284           <td class="paramtype">uint8_t&#160;</td>
 285           <td class="paramname"><em>constant_border_value</em> = <code>0</code>&#160;</td>
 286         </tr>
 287         <tr>
 288           <td></td>
 289           <td>)</td>
 290           <td></td><td></td>
 291         </tr>
 292       </table>
 293 </div><div class="memdoc">
 294
 295 <p>Initialise the function input and output. </p>
 296 <dl class="params"><dt>Parameters</dt><dd>
 297   <table class="params">
 298     <tr><td class="paramdir">[in]</td><td class="paramname">old_pyramid</td><td>Pointer to the pyramid for the old tensor. Data type supported U8 </td></tr>
 299     <tr><td class="paramdir">[in]</td><td class="paramname">new_pyramid</td><td>Pointer to the pyramid for the new tensor. Data type supported U8 </td></tr>
 300     <tr><td class="paramdir">[in]</td><td class="paramname">old_points</td><td>Pointer to the IKeyPointArray storing old key points </td></tr>
 301     <tr><td class="paramdir">[in]</td><td class="paramname">new_points_estimates</td><td>Pointer to the IKeyPointArray storing new estimates key points </td></tr>
 302     <tr><td class="paramdir">[out]</td><td class="paramname">new_points</td><td>Pointer to the IKeyPointArray storing new key points </td></tr>
 303     <tr><td class="paramdir">[in]</td><td class="paramname">termination</td><td>The criteria to terminate the search of each keypoint. </td></tr>
 304     <tr><td class="paramdir">[in]</td><td class="paramname">epsilon</td><td>The error for terminating the algorithm </td></tr>
 305     <tr><td class="paramdir">[in]</td><td class="paramname">num_iterations</td><td>The maximum number of iterations before terminate the alogrithm </td></tr>
 306     <tr><td class="paramdir">[in]</td><td class="paramname">window_dimension</td><td>The size of the window on which to perform the algorithm </td></tr>
 307     <tr><td class="paramdir">[in]</td><td class="paramname">use_initial_estimate</td><td>The flag to indicate whether the initial estimated position should be used </td></tr>
 308     <tr><td class="paramdir">[in]</td><td class="paramname">border_mode</td><td>The border mode applied at scharr kernel stage </td></tr>
 309     <tr><td class="paramdir">[in]</td><td class="paramname">constant_border_value</td><td>(Optional) Constant value to use for borders if border_mode is set to CONSTANT </td></tr>
 310   </table>
 311   </dd>
 312 </dl>
 313
 314 </div>
 315 </div>
 316 <a class="anchor" id="a21df3a34e101b1a8f689aa6326b90441"></a>
 317 <div class="memitem">
 318 <div class="memproto">
 319 <table class="mlabels">
 320   <tr>
 321   <td class="mlabels-left">
 322       <table class="memname">
 323         <tr>
 324           <td class="memname"><a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml">NEOpticalFlow</a>&amp; operator= </td>
 325           <td>(</td>
 326           <td class="paramtype">const <a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml">NEOpticalFlow</a> &amp;&#160;</td>
 327           <td class="paramname"></td><td>)</td>
 328           <td></td>
 329         </tr>
 330       </table>
 331   </td>
 332   <td class="mlabels-right">
 333 <span class="mlabels"><span class="mlabel">delete</span></span>  </td>
 334   </tr>
 335 </table>
 336 </div><div class="memdoc">
 337
 338 <p>Prevent instances of this class from being copied (As this class contains pointers) </p>
 339
 340 </div>
 341 </div>
 342 <a class="anchor" id="ad1717410afd0be936c6213a63c8005fb"></a>
 343 <div class="memitem">
 344 <div class="memproto">
 345 <table class="mlabels">
 346   <tr>
 347   <td class="mlabels-left">
 348       <table class="memname">
 349         <tr>
 350           <td class="memname">void run </td>
 351           <td>(</td>
 352           <td class="paramname"></td><td>)</td>
 353           <td></td>
 354         </tr>
 355       </table>
 356   </td>
 357   <td class="mlabels-right">
 358 <span class="mlabels"><span class="mlabel">override</span><span class="mlabel">virtual</span></span>  </td>
 359   </tr>
 360 </table>
 361 </div><div class="memdoc">
 362
 363 <p>Run the kernels contained in the function. </p>
 364 <p>For NEON kernels:</p><ul>
 365 <li>Multi-threading is used for the kernels which are parallelisable.</li>
 366 <li>By default std::thread::hardware_concurrency() threads are used.</li>
 367 </ul>
 368 <dl class="section note"><dt>Note</dt><dd><a class="el" href="classarm__compute_1_1_c_p_p_scheduler.xhtml#ae9dc1846ff1612778bbac85d46344aef">CPPScheduler::force_number_of_threads()</a> can be used to manually set the number of threads</dd></dl>
 369 <p>For OpenCL kernels:</p><ul>
 370 <li>All the kernels are enqueued on the queue associated with <a class="el" href="classarm__compute_1_1_c_l_scheduler.xhtml" title="Provides global access to a CL context and command queue. ">CLScheduler</a>.</li>
 371 <li>The queue is then flushed.</li>
 372 </ul>
 373 <dl class="section note"><dt>Note</dt><dd>The function will not block until the kernels are executed. It is the user's responsibility to wait. </dd></dl>
 374
 375 <p>Implements <a class="el" href="classarm__compute_1_1_i_function.xhtml#a18954417d3124a8095783ea13dc6d00b">IFunction</a>.</p>
 376
 377 </div>
 378 </div>
 379 <hr/>The documentation for this class was generated from the following file:<ul>
 380 <li>arm_compute/runtime/NEON/functions/<a class="el" href="_n_e_optical_flow_8h_source.xhtml">NEOpticalFlow.h</a></li>
 381 </ul>
 382 </div><!-- contents -->
 383 </div><!-- doc-content -->
 384 <!-- start footer part -->
 385 <div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
 386   <ul>
 387     <li class="navelem"><a class="el" href="namespacearm__compute.xhtml">arm_compute</a></li><li class="navelem"><a class="el" href="classarm__compute_1_1_n_e_optical_flow.xhtml">NEOpticalFlow</a></li>
 388     <li class="footer">Generated on Wed Apr 12 2017 14:26:06 for ARM Compute Library by
 389     <a href="http://www.doxygen.org/index.html">
 390     <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.11 </li>
 391   </ul>
 392 </div>
 393 </body>
 394 </html>