当前可用的OpenCV的函数有：cvAbsDiff，cvAdd，cvAddS，cvAddWeighted，cvCanny，cvCircle，cvCvtColor，cvFindContours，cvCvtScale，cvDilate，cvDiv，cvApproxPoly，cvEllipseBox，cvErode，cvExp，cvFilter2D，cvFillPoly，cvFlip，cvFloodFill，cvGoodFeaturesToTrack，cvHoughLines2，cvHoughCircles，hypot，cvInpaint，cvLaplace，cvLine，cvLog，cvMatchTemplate，cvMorphologyEx，cvMul，cvPolyLine，cvPow，cvPyrDown，cvPyrUp，cvRectangle，cvResize，cvSmooth，cvSobel，cvSub，cvSubS，cvPutText