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QRCodeDetector.html

QRCodeDetector.html 24 KB
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  105. <h2 title="Class QRCodeDetector" class="title">Class QRCodeDetector</h2>
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  108. <ul class="inheritance">
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  109. <li>java.lang.Object</li>
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    112. 

  112. <li><a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html" title="class in org.opencv.objdetect">org.opencv.objdetect.GraphicalCodeDetector</a></li>
    113. 

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  114. <ul class="inheritance">
    115. 

  115. <li>org.opencv.objdetect.QRCodeDetector</li>
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  126. <pre>public class <span class="typeNameLabel">QRCodeDetector</span>
    127. 

  127. extends <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html" title="class in org.opencv.objdetect">GraphicalCodeDetector</a></pre>
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  139. <h3>Constructor Summary</h3>
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  141. <caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
    142. 

  142. <tr>
    143. 

  143. <th class="colOne" scope="col">Constructor and Description</th>
    144. 

  144. </tr>
    145. 

  145. <tr class="altColor">
    146. 

  146. <td class="colOne"><code><span class="memberNameLink"><a href="../../../org/opencv/objdetect/QRCodeDetector.html#QRCodeDetector--">QRCodeDetector</a></span>()</code>&nbsp;</td>
    147. 

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  151. <!-- ========== METHOD SUMMARY =========== -->
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  156. <h3>Method Summary</h3>
    157. 

  157. <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
    158. 

  158. <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>
    159. 

  159. <tr>
    160. 

  160. <th class="colFirst" scope="col">Modifier and Type</th>
    161. 

  161. <th class="colLast" scope="col">Method and Description</th>
    162. 

  162. </tr>
    163. 

  163. <tr id="i0" class="altColor">
    164. 

  164. <td class="colFirst"><code>static <a href="../../../org/opencv/objdetect/QRCodeDetector.html" title="class in org.opencv.objdetect">QRCodeDetector</a></code></td>
    165. 

  165. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/objdetect/QRCodeDetector.html#Z:Z__fromPtr__-long-">__fromPtr__</a></span>(long&nbsp;addr)</code>&nbsp;</td>
    166. 

  166. </tr>
    167. 

  167. <tr id="i1" class="rowColor">
    168. 

  168. <td class="colFirst"><code>java.lang.String</code></td>
    169. 

  169. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/objdetect/QRCodeDetector.html#decodeCurved-org.opencv.core.Mat-org.opencv.core.Mat-">decodeCurved</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;img,
    170. 

  170.             <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;points)</code>
    171. 

  171. <div class="block">Decodes QR code on a curved surface in image once it's found by the detect() method.</div>
    172. 

  172. </td>
    173. 

  173. </tr>
    174. 

  174. <tr id="i2" class="altColor">
    175. 

  175. <td class="colFirst"><code>java.lang.String</code></td>
    176. 

  176. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/objdetect/QRCodeDetector.html#decodeCurved-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-">decodeCurved</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;img,
    177. 

  177.             <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;points,
    178. 

  178.             <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;straight_qrcode)</code>
    179. 

  179. <div class="block">Decodes QR code on a curved surface in image once it's found by the detect() method.</div>
    180. 

  180. </td>
    181. 

  181. </tr>
    182. 

  182. <tr id="i3" class="rowColor">
    183. 

  183. <td class="colFirst"><code>java.lang.String</code></td>
    184. 

  184. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/objdetect/QRCodeDetector.html#detectAndDecodeCurved-org.opencv.core.Mat-">detectAndDecodeCurved</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;img)</code>
    185. 

  185. <div class="block">Both detects and decodes QR code on a curved surface</div>
    186. 

  186. </td>
    187. 

  187. </tr>
    188. 

  188. <tr id="i4" class="altColor">
    189. 

  189. <td class="colFirst"><code>java.lang.String</code></td>
    190. 

  190. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/objdetect/QRCodeDetector.html#detectAndDecodeCurved-org.opencv.core.Mat-org.opencv.core.Mat-">detectAndDecodeCurved</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;img,
    191. 

  191.                      <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;points)</code>
    192. 

  192. <div class="block">Both detects and decodes QR code on a curved surface</div>
    193. 

  193. </td>
    194. 

  194. </tr>
    195. 

  195. <tr id="i5" class="rowColor">
    196. 

  196. <td class="colFirst"><code>java.lang.String</code></td>
    197. 

  197. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/objdetect/QRCodeDetector.html#detectAndDecodeCurved-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-">detectAndDecodeCurved</a></span>(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;img,
    198. 

  198.                      <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;points,
    199. 

  199.                      <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;straight_qrcode)</code>
    200. 

  200. <div class="block">Both detects and decodes QR code on a curved surface</div>
    201. 

  201. </td>
    202. 

  202. </tr>
    203. 

  203. <tr id="i6" class="altColor">
    204. 

  204. <td class="colFirst"><code><a href="../../../org/opencv/objdetect/QRCodeDetector.html" title="class in org.opencv.objdetect">QRCodeDetector</a></code></td>
    205. 

  205. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/objdetect/QRCodeDetector.html#setEpsX-double-">setEpsX</a></span>(double&nbsp;epsX)</code>
    206. 

  206. <div class="block">sets the epsilon used during the horizontal scan of QR code stop marker detection.</div>
    207. 

  207. </td>
    208. 

  208. </tr>
    209. 

  209. <tr id="i7" class="rowColor">
    210. 

  210. <td class="colFirst"><code><a href="../../../org/opencv/objdetect/QRCodeDetector.html" title="class in org.opencv.objdetect">QRCodeDetector</a></code></td>
    211. 

  211. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/objdetect/QRCodeDetector.html#setEpsY-double-">setEpsY</a></span>(double&nbsp;epsY)</code>
    212. 

  212. <div class="block">sets the epsilon used during the vertical scan of QR code stop marker detection.</div>
    213. 

  213. </td>
    214. 

  214. </tr>
    215. 

  215. <tr id="i8" class="altColor">
    216. 

  216. <td class="colFirst"><code><a href="../../../org/opencv/objdetect/QRCodeDetector.html" title="class in org.opencv.objdetect">QRCodeDetector</a></code></td>
    217. 

  217. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/opencv/objdetect/QRCodeDetector.html#setUseAlignmentMarkers-boolean-">setUseAlignmentMarkers</a></span>(boolean&nbsp;useAlignmentMarkers)</code>
    218. 

  218. <div class="block">use markers to improve the position of the corners of the QR code
    219. 

  219. 

  220.  alignmentMarkers using by default</div>
    221. 

  221. </td>
    222. 

  222. </tr>
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  227. </a>
    228. 

  228. <h3>Methods inherited from class&nbsp;org.opencv.objdetect.<a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html" title="class in org.opencv.objdetect">GraphicalCodeDetector</a></h3>
    229. 

  229. <code><a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#decode-org.opencv.core.Mat-org.opencv.core.Mat-">decode</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#decode-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-">decode</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#decodeMulti-org.opencv.core.Mat-org.opencv.core.Mat-java.util.List-">decodeMulti</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#decodeMulti-org.opencv.core.Mat-org.opencv.core.Mat-java.util.List-java.util.List-">decodeMulti</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#detect-org.opencv.core.Mat-org.opencv.core.Mat-">detect</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#detectAndDecode-org.opencv.core.Mat-">detectAndDecode</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#detectAndDecode-org.opencv.core.Mat-org.opencv.core.Mat-">detectAndDecode</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#detectAndDecode-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-">detectAndDecode</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#detectAndDecodeMulti-org.opencv.core.Mat-java.util.List-">detectAndDecodeMulti</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#detectAndDecodeMulti-org.opencv.core.Mat-java.util.List-org.opencv.core.Mat-">detectAndDecodeMulti</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#detectAndDecodeMulti-org.opencv.core.Mat-java.util.List-org.opencv.core.Mat-java.util.List-">detectAndDecodeMulti</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#detectMulti-org.opencv.core.Mat-org.opencv.core.Mat-">detectMulti</a>, <a href="../../../org/opencv/objdetect/GraphicalCodeDetector.html#getNativeObjAddr--">getNativeObjAddr</a></code></li>
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  235. <h3>Methods inherited from class&nbsp;java.lang.Object</h3>
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  236. <code>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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  250. </a>
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  251. <h3>Constructor Detail</h3>
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  252. <a name="QRCodeDetector--">
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  257. <h4>QRCodeDetector</h4>
    258. 

  258. <pre>public&nbsp;QRCodeDetector()</pre>
    259. 

  259. </li>
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  260. </ul>
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  268. <h3>Method Detail</h3>
    269. 

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  274. <h4>__fromPtr__</h4>
    275. 

  275. <pre>public static&nbsp;<a href="../../../org/opencv/objdetect/QRCodeDetector.html" title="class in org.opencv.objdetect">QRCodeDetector</a>&nbsp;__fromPtr__(long&nbsp;addr)</pre>
    276. 

  276. </li>
    277. 

  277. </ul>
    278. 

  278. <a name="decodeCurved-org.opencv.core.Mat-org.opencv.core.Mat-">
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    283. 

  283. <h4>decodeCurved</h4>
    284. 

  284. <pre>public&nbsp;java.lang.String&nbsp;decodeCurved(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;img,
    285. 

  285.                                      <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;points)</pre>
    286. 

  286. <div class="block">Decodes QR code on a curved surface in image once it's found by the detect() method.
    287. 

  287. 

  288.       Returns UTF8-encoded output string or empty string if the code cannot be decoded.</div>
    289. 

  289. <dl>
    290. 

  290. <dt><span class="paramLabel">Parameters:</span></dt>
    291. 

  291. <dd><code>img</code> - grayscale or color (BGR) image containing QR code.</dd>
    292. 

  292. <dd><code>points</code> - Quadrangle vertices found by detect() method (or some other algorithm).</dd>
    293. 

  293. <dt><span class="returnLabel">Returns:</span></dt>
    294. 

  294. <dd>automatically generated</dd>
    295. 

  295. </dl>
    296. 

  296. </li>
    297. 

  297. </ul>
    298. 

  298. <a name="decodeCurved-org.opencv.core.Mat-org.opencv.core.Mat-org.opencv.core.Mat-">
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  303. <h4>decodeCurved</h4>
    304. 

  304. <pre>public&nbsp;java.lang.String&nbsp;decodeCurved(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;img,
    305. 

  305.                                      <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;points,
    306. 

  306.                                      <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;straight_qrcode)</pre>
    307. 

  307. <div class="block">Decodes QR code on a curved surface in image once it's found by the detect() method.
    308. 

  308. 

  309.       Returns UTF8-encoded output string or empty string if the code cannot be decoded.</div>
    310. 

  310. <dl>
    311. 

  311. <dt><span class="paramLabel">Parameters:</span></dt>
    312. 

  312. <dd><code>img</code> - grayscale or color (BGR) image containing QR code.</dd>
    313. 

  313. <dd><code>points</code> - Quadrangle vertices found by detect() method (or some other algorithm).</dd>
    314. 

  314. <dd><code>straight_qrcode</code> - The optional output image containing rectified and binarized QR code</dd>
    315. 

  315. <dt><span class="returnLabel">Returns:</span></dt>
    316. 

  316. <dd>automatically generated</dd>
    317. 

  317. </dl>
    318. 

  318. </li>
    319. 

  319. </ul>
    320. 

  320. <a name="detectAndDecodeCurved-org.opencv.core.Mat-">
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  325. <h4>detectAndDecodeCurved</h4>
    326. 

  326. <pre>public&nbsp;java.lang.String&nbsp;detectAndDecodeCurved(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;img)</pre>
    327. 

  327. <div class="block">Both detects and decodes QR code on a curved surface</div>
    328. 

  328. <dl>
    329. 

  329. <dt><span class="paramLabel">Parameters:</span></dt>
    330. 

  330. <dd><code>img</code> - grayscale or color (BGR) image containing QR code.</dd>
    331. 

  331. <dt><span class="returnLabel">Returns:</span></dt>
    332. 

  332. <dd>automatically generated</dd>
    333. 

  333. </dl>
    334. 

  334. </li>
    335. 

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    336. 

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  341. <h4>detectAndDecodeCurved</h4>
    342. 

  342. <pre>public&nbsp;java.lang.String&nbsp;detectAndDecodeCurved(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;img,
    343. 

  343.                                               <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;points)</pre>
    344. 

  344. <div class="block">Both detects and decodes QR code on a curved surface</div>
    345. 

  345. <dl>
    346. 

  346. <dt><span class="paramLabel">Parameters:</span></dt>
    347. 

  347. <dd><code>img</code> - grayscale or color (BGR) image containing QR code.</dd>
    348. 

  348. <dd><code>points</code> - optional output array of vertices of the found QR code quadrangle. Will be empty if not found.</dd>
    349. 

  349. <dt><span class="returnLabel">Returns:</span></dt>
    350. 

  350. <dd>automatically generated</dd>
    351. 

  351. </dl>
    352. 

  352. </li>
    353. 

  353. </ul>
    354. 

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  359. <h4>detectAndDecodeCurved</h4>
    360. 

  360. <pre>public&nbsp;java.lang.String&nbsp;detectAndDecodeCurved(<a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;img,
    361. 

  361.                                               <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;points,
    362. 

  362.                                               <a href="../../../org/opencv/core/Mat.html" title="class in org.opencv.core">Mat</a>&nbsp;straight_qrcode)</pre>
    363. 

  363. <div class="block">Both detects and decodes QR code on a curved surface</div>
    364. 

  364. <dl>
    365. 

  365. <dt><span class="paramLabel">Parameters:</span></dt>
    366. 

  366. <dd><code>img</code> - grayscale or color (BGR) image containing QR code.</dd>
    367. 

  367. <dd><code>points</code> - optional output array of vertices of the found QR code quadrangle. Will be empty if not found.</dd>
    368. 

  368. <dd><code>straight_qrcode</code> - The optional output image containing rectified and binarized QR code</dd>
    369. 

  369. <dt><span class="returnLabel">Returns:</span></dt>
    370. 

  370. <dd>automatically generated</dd>
    371. 

  371. </dl>
    372. 

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    373. 

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  379. <h4>setEpsX</h4>
    380. 

  380. <pre>public&nbsp;<a href="../../../org/opencv/objdetect/QRCodeDetector.html" title="class in org.opencv.objdetect">QRCodeDetector</a>&nbsp;setEpsX(double&nbsp;epsX)</pre>
    381. 

  381. <div class="block">sets the epsilon used during the horizontal scan of QR code stop marker detection.</div>
    382. 

  382. <dl>
    383. 

  383. <dt><span class="paramLabel">Parameters:</span></dt>
    384. 

  384. <dd><code>epsX</code> - Epsilon neighborhood, which allows you to determine the horizontal pattern
    385. 

  385.       of the scheme 1:1:3:1:1 according to QR code standard.</dd>
    386. 

  386. <dt><span class="returnLabel">Returns:</span></dt>
    387. 

  387. <dd>automatically generated</dd>
    388. 

  388. </dl>
    389. 

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  396. <h4>setEpsY</h4>
    397. 

  397. <pre>public&nbsp;<a href="../../../org/opencv/objdetect/QRCodeDetector.html" title="class in org.opencv.objdetect">QRCodeDetector</a>&nbsp;setEpsY(double&nbsp;epsY)</pre>
    398. 

  398. <div class="block">sets the epsilon used during the vertical scan of QR code stop marker detection.</div>
    399. 

  399. <dl>
    400. 

  400. <dt><span class="paramLabel">Parameters:</span></dt>
    401. 

  401. <dd><code>epsY</code> - Epsilon neighborhood, which allows you to determine the vertical pattern
    402. 

  402.       of the scheme 1:1:3:1:1 according to QR code standard.</dd>
    403. 

  403. <dt><span class="returnLabel">Returns:</span></dt>
    404. 

  404. <dd>automatically generated</dd>
    405. 

  405. </dl>
    406. 

  406. </li>
    407. 

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    408. 

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    413. 

  413. <h4>setUseAlignmentMarkers</h4>
    414. 

  414. <pre>public&nbsp;<a href="../../../org/opencv/objdetect/QRCodeDetector.html" title="class in org.opencv.objdetect">QRCodeDetector</a>&nbsp;setUseAlignmentMarkers(boolean&nbsp;useAlignmentMarkers)</pre>
    415. 

  415. <div class="block">use markers to improve the position of the corners of the QR code
    416. 

  416. 

  417.  alignmentMarkers using by default</div>
    418. 

  418. <dl>
    419. 

  419. <dt><span class="paramLabel">Parameters:</span></dt>
    420. 

  420. <dd><code>useAlignmentMarkers</code> - automatically generated</dd>
    421. 

  421. <dt><span class="returnLabel">Returns:</span></dt>
    422. 

  422. <dd>automatically generated</dd>
    423. 

  423. </dl>
    424. 

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