// 2. dAreaThre: 面积阈值,当内轮廓面积小于等于dAreaThre时,进行填充。 void FillInternalContours(IplImage *pBinary,double dAreaThre) { double dConArea; CvSeq *pContour = NULL; CvSeq *pConInner = NULL; CvMemStorage *pStorage = NULL; // 执行条件 if (pBinary) { // 查找所有轮廓 pStorage...
void cvDrawContours( CvArr *img, CvSeq* contour, CvScalar external_color, CvScalar hole_color, int max_level, int thickness=1, int line_type=8, CvPoint offset=cvPoint(0,0) ); img 用以绘制轮廓的图像。和其他绘图函数一样,边界图像被感兴趣区域(ROI)所剪切。 contour 指针指向第一个轮廓。
OpenCV示例学习笔记(1)-contours2.cpp-通过findContours 函数实现轮廓提取 http://www.cnblogs.com/max198727/p/6279725.html?utm_source=itdadao&utm_medium=referral 这个系列的目的是通过对OpenCV示例,进一步了解OpenCV函数的使用,不涉及具体原理。 示例代码地址:ht... ...
}voidcv::drawContours(InputOutputArray _image, InputArrayOfArrays _contours,intcontourIdx,constScalar& color,intthickness,intlineType, InputArray _hierarchy,intmaxLevel,Pointoffset) {CV_INSTRUMENT_REGION();CV_Assert(thickness <= MAX_THICKNESS);constsize_tncontours = _contours.total();if(!ncontours)...
I'm interested to use this pkg to draw and measure contours on object in a video image. This is a fairly classic non-ML use of computer vision for online/streaming object shape and size analysis. We filter the image a bit, then use an al...
Python OpenCV:在特定轮廓内绘制外轮廓 、 我是OpenCV的新手,我正在尝试绘制特定轮廓内的外轮廓。这是我用来澄清的图像(已经灰度化,阈值,等等) 我想要的是找到所有圆的轮廓(总共120个),在外部矩形内。 contours = cv2.findContours(image, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE) 所以我基本上...
Contour<Point> contours = dilateImg.FindContours( Emgu.CV.CvEnum.CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_SIMPLE, Emgu.CV.CvEnum.RETR_TYPE.CV_RETR_EXTERNAL, stor); contours !=null; contours = contours.HNext) { Rectangle rect = contours.BoundingRectangle;intarea = rect.Height * rect.Width;if(ar...
external_color 外层轮廓的颜色。 hole_color 内层轮廓的颜色。 max_level 绘制轮廓的最大等级。如果等级为0,绘制单独的轮廓。如果为1,绘制轮廓及在其后的相同的级别下轮廓。如果值为2,所有的轮廓。如果等级为2,绘制所有同级轮廓及所有低一级轮廓,诸此种种。如果值为负数,函数不绘制同级轮廓,但会升序绘制直到级别...
In the picture below we can see the polygon drawn automatically by the function approximate_polygon, which has two input find contours from find_countours and the tolerance. The tolerance controls the number of points in the polygons whi...
cv2.error: OpenCV(4.1.1) C:\projects\opencv-python\opencv\modules\imgproc\src\shapedescr.cpp:274: error: (-215:Assertion failed) npoints >= 0 && (depth == CV_32F || depth == CV_32S) in function 'cv::contourArea' Open saikumarvaddepally15opened this issueSep 23, 2019· 3 comments...