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StatModel.html

StatModel.html 26 KB
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    105. 

  105. <h2 title="Class StatModel" class="title">Class StatModel</h2>
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  129. <br>
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  130. <pre>public class <span class="typeNameLabel">StatModel</span>
    131. 

  131. extends <a href="../../../org/opencv/core/Algorithm.html" title="class in org.opencv.core">Algorithm</a></pre>
    132. 

  132. <div class="block">Base class for statistical models in OpenCV ML.</div>
    133. 

  133. </li>
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  144. <h3>Field Summary</h3>
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  145. <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
    146. 

  146. <caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
    147. 

  147. <tr>
    148. 

  148. <th class="colFirst" scope="col">Modifier and Type</th>
    149. 

  149. <th class="colLast" scope="col">Field and Description</th>
    150. 

  150. </tr>
    151. 

  151. <tr class="altColor">
    152. 

  152. <td class="colFirst"><code>static int</code></td>
    153. 

  153. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#COMPRESSED_INPUT">COMPRESSED_INPUT</a></span></code>&nbsp;</td>
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  155. <tr class="rowColor">
    156. 

  156. <td class="colFirst"><code>static int</code></td>
    157. 

  157. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#PREPROCESSED_INPUT">PREPROCESSED_INPUT</a></span></code>&nbsp;</td>
    158. 

  158. </tr>
    159. 

  159. <tr class="altColor">
    160. 

  160. <td class="colFirst"><code>static int</code></td>
    161. 

  161. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#RAW_OUTPUT">RAW_OUTPUT</a></span></code>&nbsp;</td>
    162. 

  162. </tr>
    163. 

  163. <tr class="rowColor">
    164. 

  164. <td class="colFirst"><code>static int</code></td>
    165. 

  165. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#UPDATE_MODEL">UPDATE_MODEL</a></span></code>&nbsp;</td>
    166. 

  166. </tr>
    167. 

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  175. <h3>Method Summary</h3>
    176. 

  176. <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
    177. 

  177. <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
    178. 

  178. <tr>
    179. 

  179. <th class="colFirst" scope="col">Modifier and Type</th>
    180. 

  180. <th class="colLast" scope="col">Method and Description</th>
    181. 

  181. </tr>
    182. 

  182. <tr id="i0" class="altColor">
    183. 

  183. <td class="colFirst"><code>static <a href="../../../org/opencv/ml/StatModel.html" title="class in org.opencv.ml">StatModel</a></code></td>
    184. 

  184. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#Z:Z__fromPtr__-long-">__fromPtr__</a></span>(long&nbsp;addr)</code>&nbsp;</td>
    185. 

  185. </tr>
    186. 

  186. <tr id="i1" class="rowColor">
    187. 

  187. <td class="colFirst"><code>float</code></td>
    188. 

  188. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#calcError-org.opencv.ml.TrainData-boolean-org.opencv.core.Mat-">calcError</a></span>(<a href="../../../org/opencv/ml/TrainData.html" title="class in org.opencv.ml">TrainData</a>&nbsp;data,
    189. 

  189.          boolean&nbsp;test,
    190. 

  190.          <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;resp)</code>
    191. 

  191. <div class="block">Computes error on the training or test dataset</div>
    192. 

  192. </td>
    193. 

  193. </tr>
    194. 

  194. <tr id="i2" class="altColor">
    195. 

  195. <td class="colFirst"><code>boolean</code></td>
    196. 

  196. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#empty--">empty</a></span>()</code>
    197. 

  197. <div class="block">Returns true if the Algorithm is empty (e.g.</div>
    198. 

  198. </td>
    199. 

  199. </tr>
    200. 

  200. <tr id="i3" class="rowColor">
    201. 

  201. <td class="colFirst"><code>int</code></td>
    202. 

  202. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#getVarCount--">getVarCount</a></span>()</code>
    203. 

  203. <div class="block">Returns the number of variables in training samples</div>
    204. 

  204. </td>
    205. 

  205. </tr>
    206. 

  206. <tr id="i4" class="altColor">
    207. 

  207. <td class="colFirst"><code>boolean</code></td>
    208. 

  208. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#isClassifier--">isClassifier</a></span>()</code>
    209. 

  209. <div class="block">Returns true if the model is classifier</div>
    210. 

  210. </td>
    211. 

  211. </tr>
    212. 

  212. <tr id="i5" class="rowColor">
    213. 

  213. <td class="colFirst"><code>boolean</code></td>
    214. 

  214. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#isTrained--">isTrained</a></span>()</code>
    215. 

  215. <div class="block">Returns true if the model is trained</div>
    216. 

  216. </td>
    217. 

  217. </tr>
    218. 

  218. <tr id="i6" class="altColor">
    219. 

  219. <td class="colFirst"><code>float</code></td>
    220. 

  220. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#predict-org.opencv.core.Mat-">predict</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;samples)</code>
    221. 

  221. <div class="block">Predicts response(s) for the provided sample(s)</div>
    222. 

  222. </td>
    223. 

  223. </tr>
    224. 

  224. <tr id="i7" class="rowColor">
    225. 

  225. <td class="colFirst"><code>float</code></td>
    226. 

  226. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#predict-org.opencv.core.Mat-org.opencv.core.Mat-">predict</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;samples,
    227. 

  227.        <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;results)</code>
    228. 

  228. <div class="block">Predicts response(s) for the provided sample(s)</div>
    229. 

  229. </td>
    230. 

  230. </tr>
    231. 

  231. <tr id="i8" class="altColor">
    232. 

  232. <td class="colFirst"><code>float</code></td>
    233. 

  233. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#predict-org.opencv.core.Mat-org.opencv.core.Mat-int-">predict</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;samples,
    234. 

  234.        <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;results,
    235. 

  235.        int&nbsp;flags)</code>
    236. 

  236. <div class="block">Predicts response(s) for the provided sample(s)</div>
    237. 

  237. </td>
    238. 

  238. </tr>
    239. 

  239. <tr id="i9" class="rowColor">
    240. 

  240. <td class="colFirst"><code>boolean</code></td>
    241. 

  241. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#train-org.opencv.core.Mat-int-org.opencv.core.Mat-">train</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;samples,
    242. 

  242.      int&nbsp;layout,
    243. 

  243.      <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;responses)</code>
    244. 

  244. <div class="block">Trains the statistical model</div>
    245. 

  245. </td>
    246. 

  246. </tr>
    247. 

  247. <tr id="i10" class="altColor">
    248. 

  248. <td class="colFirst"><code>boolean</code></td>
    249. 

  249. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#train-org.opencv.ml.TrainData-">train</a></span>(<a href="../../../org/opencv/ml/TrainData.html" title="class in org.opencv.ml">TrainData</a>&nbsp;trainData)</code>
    250. 

  250. <div class="block">Trains the statistical model</div>
    251. 

  251. </td>
    252. 

  252. </tr>
    253. 

  253. <tr id="i11" class="rowColor">
    254. 

  254. <td class="colFirst"><code>boolean</code></td>
    255. 

  255. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/ml/StatModel.html#train-org.opencv.ml.TrainData-int-">train</a></span>(<a href="../../../org/opencv/ml/TrainData.html" title="class in org.opencv.ml">TrainData</a>&nbsp;trainData,
    256. 

  256.      int&nbsp;flags)</code>
    257. 

  257. <div class="block">Trains the statistical model</div>
    258. 

  258. </td>
    259. 

  259. </tr>
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  265. <h3>Methods inherited from class&nbsp;org.opencv.core.<a href="../../../org/opencv/core/Algorithm.html" title="class in org.opencv.core">Algorithm</a></h3>
    266. 

  266. <code><a href="../../../org/opencv/core/Algorithm.html#clear--">clear</a>, <a href="../../../org/opencv/core/Algorithm.html#getDefaultName--">getDefaultName</a>, <a href="../../../org/opencv/core/Algorithm.html#getNativeObjAddr--">getNativeObjAddr</a>, <a href="../../../org/opencv/core/Algorithm.html#save-java.lang.String-">save</a></code></li>
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  272. <h3>Methods inherited from class&nbsp;java.lang.Object</h3>
    273. 

  273. <code>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
    274. 

  274. </ul>
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    295. 

  295. <pre>public static final&nbsp;int COMPRESSED_INPUT</pre>
    296. 

  296. <dl>
    297. 

  297. <dt><span class="seeLabel">See Also:</span></dt>
    298. 

  298. <dd><a href="../../../constant-values.html#org.opencv.ml.StatModel.COMPRESSED_INPUT">Constant Field Values</a></dd>
    299. 

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  308. <pre>public static final&nbsp;int PREPROCESSED_INPUT</pre>
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  311. <dd><a href="../../../constant-values.html#org.opencv.ml.StatModel.PREPROCESSED_INPUT">Constant Field Values</a></dd>
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    324. 

  324. <dd><a href="../../../constant-values.html#org.opencv.ml.StatModel.RAW_OUTPUT">Constant Field Values</a></dd>
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  335. <dl>
    336. 

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    337. 

  337. <dd><a href="../../../constant-values.html#org.opencv.ml.StatModel.UPDATE_MODEL">Constant Field Values</a></dd>
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    355. 

  355. <pre>public static&nbsp;<a href="../../../org/opencv/ml/StatModel.html" title="class in org.opencv.ml">StatModel</a>&nbsp;__fromPtr__(long&nbsp;addr)</pre>
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  358. <a name="calcError-org.opencv.ml.TrainData-boolean-org.opencv.core.Mat-">
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  364. <pre>public&nbsp;float&nbsp;calcError(<a href="../../../org/opencv/ml/TrainData.html" title="class in org.opencv.ml">TrainData</a>&nbsp;data,
    365. 

  365.                        boolean&nbsp;test,
    366. 

  366.                        <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;resp)</pre>
    367. 

  367. <div class="block">Computes error on the training or test dataset</div>
    368. 

  368. <dl>
    369. 

  369. <dt><span class="paramLabel">Parameters:</span></dt>
    370. 

  370. <dd><code>data</code> - the training data</dd>
    371. 

  371. <dd><code>test</code> - if true, the error is computed over the test subset of the data, otherwise it's
    372. 

  372.          computed over the training subset of the data. Please note that if you loaded a completely
    373. 

  373.          different dataset to evaluate already trained classifier, you will probably want not to set
    374. 

  374.          the test subset at all with TrainData::setTrainTestSplitRatio and specify test=false, so
    375. 

  375.          that the error is computed for the whole new set. Yes, this sounds a bit confusing.</dd>
    376. 

  376. <dd><code>resp</code> - the optional output responses.
    377. 

  377. 

  378.      The method uses StatModel::predict to compute the error. For regression models the error is
    379. 

  379.      computed as RMS, for classifiers - as a percent of missclassified samples (0%-100%).</dd>
    380. 

  380. <dt><span class="returnLabel">Returns:</span></dt>
    381. 

  381. <dd>automatically generated</dd>
    382. 

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  391. <pre>public&nbsp;boolean&nbsp;empty()</pre>
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  392. <div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../org/opencv/core/Algorithm.html#empty--">Algorithm</a></code></span></div>
    393. 

  393. <div class="block">Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read</div>
    394. 

  394. <dl>
    395. 

  395. <dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
    396. 

  396. <dd><code><a href="../../../org/opencv/core/Algorithm.html#empty--">empty</a></code>&nbsp;in class&nbsp;<code><a href="../../../org/opencv/core/Algorithm.html" title="class in org.opencv.core">Algorithm</a></code></dd>
    397. 

  397. <dt><span class="returnLabel">Returns:</span></dt>
    398. 

  398. <dd>automatically generated</dd>
    399. 

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    409. 

  409. <div class="block">Returns the number of variables in training samples</div>
    410. 

  410. <dl>
    411. 

  411. <dt><span class="returnLabel">Returns:</span></dt>
    412. 

  412. <dd>automatically generated</dd>
    413. 

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    423. 

  423. <div class="block">Returns true if the model is classifier</div>
    424. 

  424. <dl>
    425. 

  425. <dt><span class="returnLabel">Returns:</span></dt>
    426. 

  426. <dd>automatically generated</dd>
    427. 

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  437. <div class="block">Returns true if the model is trained</div>
    438. 

  438. <dl>
    439. 

  439. <dt><span class="returnLabel">Returns:</span></dt>
    440. 

  440. <dd>automatically generated</dd>
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  450. <pre>public&nbsp;float&nbsp;predict(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;samples)</pre>
    451. 

  451. <div class="block">Predicts response(s) for the provided sample(s)</div>
    452. 

  452. <dl>
    453. 

  453. <dt><span class="paramLabel">Parameters:</span></dt>
    454. 

  454. <dd><code>samples</code> - The input samples, floating-point matrix</dd>
    455. 

  455. <dt><span class="returnLabel">Returns:</span></dt>
    456. 

  456. <dd>automatically generated</dd>
    457. 

  457. </dl>
    458. 

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    460. 

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  466. <pre>public&nbsp;float&nbsp;predict(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;samples,
    467. 

  467.                      <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;results)</pre>
    468. 

  468. <div class="block">Predicts response(s) for the provided sample(s)</div>
    469. 

  469. <dl>
    470. 

  470. <dt><span class="paramLabel">Parameters:</span></dt>
    471. 

  471. <dd><code>samples</code> - The input samples, floating-point matrix</dd>
    472. 

  472. <dd><code>results</code> - The optional output matrix of results.</dd>
    473. 

  473. <dt><span class="returnLabel">Returns:</span></dt>
    474. 

  474. <dd>automatically generated</dd>
    475. 

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    476. 

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    478. 

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    484. 

  484. <pre>public&nbsp;float&nbsp;predict(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;samples,
    485. 

  485.                      <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;results,
    486. 

  486.                      int&nbsp;flags)</pre>
    487. 

  487. <div class="block">Predicts response(s) for the provided sample(s)</div>
    488. 

  488. <dl>
    489. 

  489. <dt><span class="paramLabel">Parameters:</span></dt>
    490. 

  490. <dd><code>samples</code> - The input samples, floating-point matrix</dd>
    491. 

  491. <dd><code>results</code> - The optional output matrix of results.</dd>
    492. 

  492. <dd><code>flags</code> - The optional flags, model-dependent. See cv::ml::StatModel::Flags.</dd>
    493. 

  493. <dt><span class="returnLabel">Returns:</span></dt>
    494. 

  494. <dd>automatically generated</dd>
    495. 

  495. </dl>
    496. 

  496. </li>
    497. 

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    498. 

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    504. 

  504. <pre>public&nbsp;boolean&nbsp;train(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;samples,
    505. 

  505.                      int&nbsp;layout,
    506. 

  506.                      <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;responses)</pre>
    507. 

  507. <div class="block">Trains the statistical model</div>
    508. 

  508. <dl>
    509. 

  509. <dt><span class="paramLabel">Parameters:</span></dt>
    510. 

  510. <dd><code>samples</code> - training samples</dd>
    511. 

  511. <dd><code>layout</code> - See ml::SampleTypes.</dd>
    512. 

  512. <dd><code>responses</code> - vector of responses associated with the training samples.</dd>
    513. 

  513. <dt><span class="returnLabel">Returns:</span></dt>
    514. 

  514. <dd>automatically generated</dd>
    515. 

  515. </dl>
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    525. 

  525. <div class="block">Trains the statistical model</div>
    526. 

  526. <dl>
    527. 

  527. <dt><span class="paramLabel">Parameters:</span></dt>
    528. 

  528. <dd><code>trainData</code> - training data that can be loaded from file using TrainData::loadFromCSV or
    529. 

  529.          created with TrainData::create.
    530. 

  530.          new training samples, not completely overwritten (such as NormalBayesClassifier or ANN_MLP).</dd>
    531. 

  531. <dt><span class="returnLabel">Returns:</span></dt>
    532. 

  532. <dd>automatically generated</dd>
    533. 

  533. </dl>
    534. 

  534. </li>
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  542. <pre>public&nbsp;boolean&nbsp;train(<a href="../../../org/opencv/ml/TrainData.html" title="class in org.opencv.ml">TrainData</a>&nbsp;trainData,
    543. 

  543.                      int&nbsp;flags)</pre>
    544. 

  544. <div class="block">Trains the statistical model</div>
    545. 

  545. <dl>
    546. 

  546. <dt><span class="paramLabel">Parameters:</span></dt>
    547. 

  547. <dd><code>trainData</code> - training data that can be loaded from file using TrainData::loadFromCSV or
    548. 

  548.          created with TrainData::create.</dd>
    549. 

  549. <dd><code>flags</code> - optional flags, depending on the model. Some of the models can be updated with the
    550. 

  550.          new training samples, not completely overwritten (such as NormalBayesClassifier or ANN_MLP).</dd>
    551. 

  551. <dt><span class="returnLabel">Returns:</span></dt>
    552. 

  552. <dd>automatically generated</dd>
    553. 

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