Python cv2 Module

This page shows the popular functions and classes defined in the cv2 module. The items are ordered by their popularity in 40,000 open source Python projects. If you can not find a good example below, you can try the search function to search modules.

• 1. resize()    
  Used in 1944 projects
• 2. imread()    
  Used in 1920 projects
• 3. cvtColor()    
  Used in 1548 projects
• 4. imwrite()    
  Used in 1423 projects
• 5. imshow()    
  Used in 1277 projects
• 6. waitKey()    
  Used in 1265 projects
• 7. rectangle()    
  Used in 927 projects
• 8. putText()    
  Used in 848 projects
• 9. VideoCapture()    
  Used in 835 projects
• 10. destroyAllWindows()    
  Used in 684 projects
• 11. COLOR_BGR2GRAY    
  Used in 656 projects
• 12. COLOR_BGR2RGB    
  Used in 644 projects
• 13. INTER_LINEAR    
  Used in 602 projects
• 14. FONT_HERSHEY_SIMPLEX    
  Used in 569 projects
• 15. circle()    
  Used in 489 projects
• 16. warpAffine()    
  Used in 435 projects
• 17. INTER_CUBIC    
  Used in 419 projects
• 18. line()    
  Used in 409 projects
• 19. INTER_AREA    
  Used in 365 projects
• 20. IMREAD_COLOR    
  Used in 354 projects
• 21. INTER_NEAREST    
  Used in 348 projects
• 22. namedWindow()    
  Used in 342 projects
• 23. findContours()    
  Used in 341 projects
• 24. LINE_AA    
  Used in 340 projects
• 25. GaussianBlur()    
  Used in 329 projects
• 26. flip()    
  Used in 317 projects
• 27. VideoWriter()    
  Used in 295 projects
• 28. threshold()    
  Used in 284 projects
• 29. COLOR_RGB2BGR    
  Used in 283 projects
• 30. getRotationMatrix2D()    
  Used in 278 projects
• 31. BORDER_CONSTANT    
  Used in 269 projects
• 32. VideoWriter_fourcc()    
  Used in 256 projects
• 33. imdecode()    
  Used in 253 projects
• 34. THRESH_BINARY    
  Used in 250 projects
• 35. COLOR_BGR2HSV    
  Used in 247 projects
• 36. CHAIN_APPROX_SIMPLE    
  Used in 229 projects
• 37. COLOR_RGB2GRAY    
  Used in 227 projects
• 38. IMREAD_GRAYSCALE    
  Used in 221 projects
• 39. dilate()    
  Used in 215 projects
• 40. addWeighted()    
  Used in 211 projects
• 41. drawContours()    
  Used in 209 projects
• 42. CAP_PROP_FRAME_WIDTH    
  Used in 208 projects
• 43. CAP_PROP_FRAME_HEIGHT    
  Used in 208 projects
• 44. copyMakeBorder()    
  Used in 205 projects
• 45. contourArea()    
  Used in 195 projects
• 46. boundingRect()    
  Used in 179 projects
• 47. getTextSize()    
  Used in 176 projects
• 48. CascadeClassifier()    
  Used in 163 projects
• 49. RETR_EXTERNAL    
  Used in 162 projects
• 50. CAP_PROP_FPS    
  Used in 158 projects
• 51. COLOR_GRAY2BGR    
  Used in 154 projects
• 52. RETR_TREE    
  Used in 151 projects
• 53. applyColorMap()    
  Used in 149 projects
• 54. imencode()    
  Used in 148 projects
• 55. COLOR_HSV2BGR    
  Used in 146 projects
• 56. FONT_HERSHEY_PLAIN    
  Used in 142 projects
• 57. erode()    
  Used in 139 projects
• 58. WINDOW_NORMAL    
  Used in 138 projects
• 59. morphologyEx()    
  Used in 138 projects
• 60. Canny()    
  Used in 138 projects
• 61. CAP_PROP_FRAME_COUNT    
  Used in 135 projects
• 62. warpPerspective()    
  Used in 132 projects
• 63. polylines()    
  Used in 126 projects
• 64. COLORMAP_JET    
  Used in 126 projects
• 65. split()    
  Used in 126 projects
• 66. bitwise_and()    
  Used in 121 projects
• 67. getStructuringElement()    
  Used in 116 projects
• 68. inRange()    
  Used in 115 projects
• 69. CHAIN_APPROX_NONE    
  Used in 115 projects
• 70. merge()    
  Used in 109 projects
• 71. IMREAD_UNCHANGED    
  Used in 106 projects
• 72. COLOR_GRAY2RGB    
  Used in 98 projects
• 73. medianBlur()    
  Used in 98 projects
• 74. getAffineTransform()    
  Used in 98 projects
• 75. blur()    
  Used in 97 projects
• 76. fillPoly()    
  Used in 97 projects
• 77. setMouseCallback()    
  Used in 96 projects
• 78. MORPH_CLOSE    
  Used in 96 projects
• 79. BORDER_REPLICATE    
  Used in 94 projects
• 80. getPerspectiveTransform()    
  Used in 91 projects
• 81. INTER_LANCZOS4    
  Used in 91 projects
• 82. normalize()    
  Used in 91 projects
• 83. filter2D()    
  Used in 87 projects
• 84. convexHull()    
  Used in 85 projects
• 85. TERM_CRITERIA_EPS    
  Used in 83 projects
• 86. MORPH_OPEN    
  Used in 83 projects
• 87. THRESH_OTSU    
  Used in 83 projects
• 88. NORM_MINMAX    
  Used in 82 projects
• 89. THRESH_BINARY_INV    
  Used in 81 projects
• 90. minAreaRect()    
  Used in 80 projects
• 91. equalizeHist()    
  Used in 79 projects
• 92. moments()    
  Used in 79 projects
• 93. IMWRITE_JPEG_QUALITY    
  Used in 77 projects
• 94. destroyWindow()    
  Used in 76 projects
• 95. FILLED    
  Used in 76 projects
• 96. FONT_HERSHEY_COMPLEX    
  Used in 75 projects
• 97. minMaxLoc()    
  Used in 74 projects
• 98. fillConvexPoly()    
  Used in 74 projects
• 99. adaptiveThreshold()    
  Used in 73 projects
• 100. EVENT_LBUTTONDOWN    
  Used in 70 projects
• 101. matchTemplate()    
  Used in 70 projects
• 102. remap()    
  Used in 70 projects
• 103. approxPolyDP()    
  Used in 70 projects
• 104. bitwise_not()    
  Used in 69 projects
• 105. boxPoints()    
  Used in 68 projects
• 106. arcLength()    
  Used in 67 projects
• 107. FONT_HERSHEY_DUPLEX    
  Used in 66 projects
• 108. resizeWindow()    
  Used in 65 projects
• 109. calcHist()    
  Used in 61 projects
• 110. COLOR_HSV2RGB    
  Used in 61 projects
• 111. CAP_PROP_POS_FRAMES    
  Used in 61 projects
• 112. Sobel()    
  Used in 61 projects
• 113. bilateralFilter()    
  Used in 61 projects
• 114. BORDER_REFLECT_101    
  Used in 61 projects
• 115. add()    
  Used in 60 projects
• 116. Rodrigues()    
  Used in 60 projects
• 117. __version__()    
  Used in 59 projects
• 118. EVENT_LBUTTONUP    
  Used in 56 projects
• 119. COLOR_RGB2HSV    
  Used in 56 projects
• 120. findHomography()    
  Used in 55 projects
• 121. RETR_LIST    
  Used in 53 projects
• 122. setNumThreads()    
  Used in 53 projects
• 123. TM_CCOEFF_NORMED    
  Used in 52 projects
• 124. createCLAHE()    
  Used in 52 projects
• 125. ADAPTIVE_THRESH_GAUSSIAN_C    
  Used in 51 projects
• 126. moveWindow()    
  Used in 50 projects
• 127. RETR_CCOMP    
  Used in 49 projects
• 128. CV_64F    
  Used in 49 projects
• 129. absdiff()    
  Used in 49 projects
• 130. getTickFrequency()    
  Used in 49 projects
• 131. ellipse()    
  Used in 47 projects
• 132. TERM_CRITERIA_COUNT    
  Used in 46 projects
• 133. Laplacian()    
  Used in 46 projects
• 134. LUT    
  Used in 46 projects
• 135. RANSAC    
  Used in 45 projects
• 136. WINDOW_AUTOSIZE    
  Used in 45 projects
• 137. BFMatcher()    
  Used in 45 projects
• 138. TERM_CRITERIA_MAX_ITER    
  Used in 44 projects
• 139. convertScaleAbs()    
  Used in 44 projects
• 140. WARP_INVERSE_MAP    
  Used in 41 projects
• 141. BORDER_REFLECT    
  Used in 41 projects
• 142. CV_32F    
  Used in 40 projects
• 143. getTickCount()    
  Used in 40 projects
• 144. minEnclosingCircle()    
  Used in 40 projects
• 145. projectPoints()    
  Used in 39 projects
• 146. ORB_create()    
  Used in 38 projects
• 147. EVENT_MOUSEMOVE    
  Used in 37 projects
• 148. findChessboardCorners()    
  Used in 36 projects
• 149. error()    
  Used in 36 projects
• 150. createTrackbar()    
  Used in 35 projects
• 151. subtract()    
  Used in 35 projects
• 152. bitwise_or()    
  Used in 35 projects
• 153. drawKeypoints()    
  Used in 34 projects
• 154. calcOpticalFlowPyrLK()    
  Used in 34 projects
• 155. COLOR_BGR2LAB    
  Used in 34 projects
• 156. solvePnP()    
  Used in 34 projects
• 157. CASCADE_SCALE_IMAGE    
  Used in 33 projects
• 158. cornerSubPix()    
  Used in 33 projects
• 159. IMWRITE_PNG_COMPRESSION    
  Used in 33 projects
• 160. cartToPolar()    
  Used in 32 projects
• 161. goodFeaturesToTrack()    
  Used in 32 projects
• 162. ADAPTIVE_THRESH_MEAN_C    
  Used in 31 projects
• 163. calcOpticalFlowFarneback()    
  Used in 31 projects
• 164. calibrateCamera()    
  Used in 31 projects
• 165. drawChessboardCorners()    
  Used in 31 projects
• 166. perspectiveTransform()    
  Used in 31 projects
• 167. CAP_PROP_FOURCC    
  Used in 31 projects
• 168. undistort()    
  Used in 30 projects
• 169. countNonZero()    
  Used in 30 projects
• 170. FlannBasedMatcher()    
  Used in 30 projects
• 171. KeyPoint()    
  Used in 29 projects
• 172. FONT_HERSHEY_COMPLEX_SMALL    
  Used in 29 projects
• 173. drawMatches()    
  Used in 29 projects
• 174. distanceTransform()    
  Used in 28 projects
• 175. transpose()    
  Used in 28 projects
• 176. CV_AA    
  Used in 26 projects
• 177. BORDER_WRAP    
  Used in 26 projects
• 178. IMREAD_IGNORE_ORIENTATION    
  Used in 26 projects
• 179. DIST_L2    
  Used in 25 projects
• 180. HoughLinesP()    
  Used in 25 projects
• 181. mean()    
  Used in 25 projects
• 182. HoughCircles()    
  Used in 24 projects
• 183. BORDER_TRANSPARENT    
  Used in 23 projects
• 184. CV_LOAD_IMAGE_GRAYSCALE    
  Used in 23 projects
• 185. CV_8U    
  Used in 23 projects
• 186. kmeans()    
  Used in 22 projects
• 187. getWindowProperty()    
  Used in 22 projects
• 188. connectedComponentsWithStats()    
  Used in 21 projects
• 189. COLOR_LAB2BGR    
  Used in 21 projects
• 190. floodFill()    
  Used in 21 projects
• 191. solvePnPRansac()    
  Used in 21 projects
• 192. arrowedLine()    
  Used in 21 projects
• 193. IMREAD_ANYDEPTH    
  Used in 21 projects
• 194. getTrackbarPos()    
  Used in 20 projects
• 195. HOUGH_GRADIENT    
  Used in 20 projects
• 196. HOGDescriptor()    
  Used in 20 projects
• 197. inpaint()    
  Used in 20 projects
• 198. createBackgroundSubtractorMOG2()    
  Used in 20 projects
• 199. pointPolygonTest()    
  Used in 20 projects
• 200. calcBackProject()    
  Used in 19 projects
• 201. THRESH_TOZERO    
  Used in 19 projects
• 202. CV_LOAD_IMAGE_COLOR    
  Used in 19 projects
• 203. pyrDown()    
  Used in 19 projects
• 204. FONT_HERSHEY_TRIPLEX    
  Used in 19 projects
• 205. startWindowThread()    
  Used in 19 projects
• 206. WND_PROP_FULLSCREEN    
  Used in 18 projects
• 207. KMEANS_RANDOM_CENTERS    
  Used in 18 projects
• 208. initUndistortRectifyMap()    
  Used in 18 projects
• 209. cv()    
  Used in 18 projects
• 210. CAP_PROP_POS_MSEC    
  Used in 18 projects
• 211. norm()    
  Used in 18 projects
• 212. COLOR_BGR2YUV    
  Used in 18 projects
• 213. NORM_L2    
  Used in 17 projects
• 214. TM_SQDIFF    
  Used in 17 projects
• 215. COLOR_BGR2HLS    
  Used in 17 projects
• 216. EVENT_FLAG_LBUTTON    
  Used in 16 projects
• 217. SIFT    
  Used in 16 projects
• 218. EVENT_RBUTTONDOWN    
  Used in 16 projects
• 219. HoughLines()    
  Used in 16 projects
• 220. getOptimalNewCameraMatrix()    
  Used in 16 projects
• 221. DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS    
  Used in 16 projects
• 222. getGaussianKernel()    
  Used in 16 projects
• 223. setWindowProperty()    
  Used in 16 projects
• 224. invertAffineTransform()    
  Used in 16 projects
• 225. TM_SQDIFF_NORMED    
  Used in 15 projects
• 226. COLOR_RGB2LAB    
  Used in 15 projects
• 227. cornerHarris()    
  Used in 15 projects
• 228. fitEllipse()    
  Used in 15 projects
• 229. ellipse2Poly()    
  Used in 15 projects
• 230. transform()    
  Used in 15 projects
• 231. EVENT_RBUTTONUP    
  Used in 14 projects
• 232. meanStdDev()    
  Used in 14 projects
• 233. UMat()    
  Used in 14 projects
• 234. compareHist()    
  Used in 13 projects
• 235. CV_16S    
  Used in 13 projects
• 236. INPAINT_TELEA    
  Used in 13 projects
• 237. accumulateWeighted()    
  Used in 13 projects
• 238. connectedComponents()    
  Used in 13 projects
• 239. COLOR_BGR2YCR_CB    
  Used in 13 projects
• 240. IMREAD_ANYCOLOR    
  Used in 13 projects
• 241. estimateRigidTransform()    
  Used in 13 projects
• 242. selectROI()    
  Used in 13 projects
• 243. WINDOW_FULLSCREEN    
  Used in 13 projects
• 244. COLOR_RGB2HLS    
  Used in 12 projects
• 245. findFundamentalMat()    
  Used in 12 projects
• 246. pyrUp()    
  Used in 12 projects
• 247. drawMatchesKnn()    
  Used in 12 projects
• 248. SVDecomp()    
  Used in 12 projects
• 249. randn()    
  Used in 12 projects
• 250. FastFeatureDetector_create()    
  Used in 12 projects
• 251. BORDER_DEFAULT    
  Used in 12 projects
• 252. isContourConvex()    
  Used in 12 projects
• 253. multiply()    
  Used in 12 projects
• 254. CV_16SC2    
  Used in 12 projects
• 255. watershed()    
  Used in 11 projects
• 256. TM_CCORR_NORMED    
  Used in 11 projects
• 257. fastNlMeansDenoising()    
  Used in 11 projects
• 258. SimpleBlobDetector_create()    
  Used in 11 projects
• 259. KalmanFilter()    
  Used in 11 projects
• 260. StereoSGBM_create()    
  Used in 11 projects
• 261. getRectSubPix()    
  Used in 11 projects
• 262. rotate()    
  Used in 11 projects
• 263. WINDOW_KEEPRATIO    
  Used in 11 projects
• 264. INPAINT_NS    
  Used in 11 projects
• 265. COLOR_YUV2BGR    
  Used in 11 projects
• 266. seamlessClone()    
  Used in 11 projects
• 267. COLOR_BGR2BGRA    
  Used in 11 projects
• 268. DescriptorExtractor_create()    
  Used in 10 projects
• 269. SimpleBlobDetector_Params()    
  Used in 10 projects
• 270. FONT_ITALIC    
  Used in 10 projects
• 271. HOGDescriptor_getDefaultPeopleDetector()    
  Used in 10 projects
• 272. hconcat()    
  Used in 10 projects
• 273. dft()    
  Used in 10 projects
• 274. DFT_COMPLEX_OUTPUT    
  Used in 10 projects
• 275. WND_PROP_VISIBLE    
  Used in 10 projects
• 276. SOLVEPNP_ITERATIVE    
  Used in 10 projects
• 277. MORPH_ELLIPSE    
  Used in 10 projects
• 278. COLOR_BGRA2RGBA    
  Used in 10 projects
• 279. NORMAL_CLONE    
  Used in 10 projects
• 280. LINE_8    
  Used in 10 projects
• 281. EVENT_LBUTTONDBLCLK    
  Used in 9 projects
• 282. SURF    
  Used in 9 projects
• 283. undistortPoints()    
  Used in 9 projects
• 284. grabCut()    
  Used in 9 projects
• 285. CV_32FC1    
  Used in 9 projects
• 286. THRESH_TRUNC    
  Used in 9 projects
• 287. CamShift()    
  Used in 9 projects
• 288. COLOR_RGBA2BGRA    
  Used in 9 projects
• 289. NORM_HAMMING    
  Used in 9 projects
• 290. WARP_FILL_OUTLIERS    
  Used in 9 projects
• 291. COLOR_BGRA2BGR    
  Used in 9 projects
• 292. COLOR_LAB2RGB    
  Used in 9 projects
• 293. CAP_PROP_BUFFERSIZE    
  Used in 9 projects
• 294. Rect()    
  Used in 9 projects
• 295. pow()    
  Used in 9 projects
• 296. CHAIN_APPROX_TC89_L1    
  Used in 9 projects
• 297. COLOR_BGR2Lab()    
  Used in 9 projects
• 298. CV_8UC3    
  Used in 8 projects
• 299. FeatureDetector_create()    
  Used in 8 projects
• 300. ORB    
  Used in 8 projects
• 301. MORPH_GRADIENT    
  Used in 8 projects
• 302. CHAIN_APPROX_TC89_KCOS    
  Used in 8 projects
• 303. stereoCalibrate()    
  Used in 8 projects
• 304. MORPH_TOPHAT    
  Used in 8 projects
• 305. THRESH_TOZERO_INV    
  Used in 8 projects
• 306. CALIB_CB_ADAPTIVE_THRESH    
  Used in 8 projects
• 307. convexityDefects()    
  Used in 8 projects
• 308. FLOODFILL_FIXED_RANGE    
  Used in 8 projects
• 309. estimateAffinePartial2D()    
  Used in 8 projects
• 310. HuMoments()    
  Used in 8 projects
• 311. TrackerKCF_create()    
  Used in 8 projects
• 312. fitLine()    
  Used in 8 projects
• 313. COLOR_HLS2RGB    
  Used in 8 projects
• 314. CV_32S    
  Used in 8 projects
• 315. MORPH_RECT    
  Used in 8 projects
• 316. setTrackbarPos()    
  Used in 7 projects
• 317. StereoBM_create()    
  Used in 7 projects
• 318. FONT_HERSHEY_SCRIPT_SIMPLEX    
  Used in 7 projects
• 319. TM_CCOEFF    
  Used in 7 projects
• 320. COLOR_BGR2YCrCb()    
  Used in 7 projects
• 321. COLOR_RGB2YUV    
  Used in 7 projects
• 322. getBuildInformation()    
  Used in 7 projects
• 323. HISTCMP_BHATTACHARYYA    
  Used in 7 projects
• 324. COLORMAP_HSV    
  Used in 7 projects
• 325. COLOR_BGR2LUV    
  Used in 7 projects
• 326. drawMarker()    
  Used in 7 projects
• 327. CAP_GSTREAMER    
  Used in 7 projects
• 328. rotatedRectangleIntersection()    
  Used in 7 projects
• 329. COLOR_RGB2YCR_CB    
  Used in 7 projects
• 330. COLOR_HLS2BGR    
  Used in 7 projects
• 331. MORPH_DILATE    
  Used in 7 projects
• 332. ROTATE_90_COUNTERCLOCKWISE    
  Used in 7 projects
• 333. idft()    
  Used in 7 projects
• 334. EVENT_MBUTTONDOWN    
  Used in 7 projects
• 335. ROTATE_90_CLOCKWISE    
  Used in 7 projects
• 336. setWindowTitle()    
  Used in 7 projects
• 337. TrackerCSRT_create()    
  Used in 7 projects
• 338. COLORMAP_BONE    
  Used in 7 projects
• 339. GC_INIT_WITH_RECT    
  Used in 6 projects
• 340. MORPH_BLACKHAT    
  Used in 6 projects
• 341. stereoRectify()    
  Used in 6 projects
• 342. matchShapes()    
  Used in 6 projects
• 343. Subdiv2D()    
  Used in 6 projects
• 344. boxFilter()    
  Used in 6 projects
• 345. fastNlMeansDenoisingColored()    
  Used in 6 projects
• 346. Scharr()    
  Used in 6 projects
• 347. createLineSegmentDetector()    
  Used in 6 projects
• 348. aruco()    
  Used in 6 projects
• 349. triangulatePoints()    
  Used in 6 projects
• 350. recoverPose()    
  Used in 6 projects
• 351. BRISK_create()    
  Used in 6 projects
• 352. decomposeProjectionMatrix()    
  Used in 6 projects
• 353. DescriptorMatcher_create()    
  Used in 6 projects
• 354. NORM_L1    
  Used in 6 projects
• 355. TrackerMOSSE_create()    
  Used in 6 projects
• 356. CALIB_CB_NORMALIZE_IMAGE    
  Used in 6 projects
• 357. FileStorage()    
  Used in 6 projects
• 358. COLOR_Lab2BGR()    
  Used in 6 projects
• 359. WINDOW_GUI_NORMAL    
  Used in 6 projects
• 360. mulSpectrums()    
  Used in 6 projects
• 361. pyrMeanShiftFiltering()    
  Used in 6 projects
• 362. DFT_SCALE    
  Used in 6 projects
• 363. COLORMAP_RAINBOW    
  Used in 6 projects
• 364. findEssentialMat()    
  Used in 6 projects
• 365. KMEANS_PP_CENTERS    
  Used in 6 projects
• 366. DMatch()    
  Used in 6 projects
• 367. BORDER_REFLECT101    
  Used in 6 projects
• 368. CC_STAT_AREA    
  Used in 6 projects
• 369. dct()    
  Used in 6 projects
• 370. KNearest()    
  Used in 5 projects
• 371. GC_INIT_WITH_MASK    
  Used in 5 projects
• 372. CV_LOAD_IMAGE_UNCHANGED    
  Used in 5 projects
• 373. CV_8UC1    
  Used in 5 projects
• 374. SimpleBlobDetector()    
  Used in 5 projects
• 375. bitwise_xor()    
  Used in 5 projects
• 376. COLOR_YCR_CB2BGR    
  Used in 5 projects
• 377. meanShift()    
  Used in 5 projects
• 378. createLBPHFaceRecognizer()    
  Used in 5 projects
• 379. findCirclesGrid()    
  Used in 5 projects
• 380. CC_STAT_LEFT    
  Used in 5 projects
• 381. CC_STAT_TOP    
  Used in 5 projects
• 382. COLOR_GRAY2BGRA    
  Used in 5 projects
• 383. CC_STAT_WIDTH    
  Used in 5 projects
• 384. groupRectangles()    
  Used in 5 projects
• 385. sqrt()    
  Used in 5 projects
• 386. CALIB_CB_FAST_CHECK    
  Used in 5 projects
• 387. max()    
  Used in 5 projects
• 388. convertMaps()    
  Used in 5 projects
• 389. reprojectImageTo3D()    
  Used in 5 projects
• 390. magnitude()    
  Used in 5 projects
• 391. COLORMAP_HOT    
  Used in 5 projects
• 392. CC_STAT_HEIGHT    
  Used in 5 projects
• 393. COLOR_HSV2GRAY    
  Used in 5 projects
• 394. waitKeyEx()    
  Used in 5 projects
• 395. vconcat()    
  Used in 5 projects
• 396. COLOR_RGB2Lab()    
  Used in 5 projects
• 397. OPTFLOW_FARNEBACK_GAUSSIAN    
  Used in 5 projects
• 398. COLOR_BGR2RGBA    
  Used in 5 projects
• 399. imresize()    
  Used in 5 projects
• 400. BackgroundSubtractorMOG()    
  Used in 5 projects