为什么Findcv中的FindContours函数在下面的图像中找到两个轮廓而不是一个?

输入图像 – http://sofzh.miximages.com/c/sLoqh.png带凸轮廓的输出图像 – http://sofzh.miximages.com/c/AaNJY.png

如何获得一个轮廓的任何帮助将非常感激?

将图像作为一个轮廓检索的技巧似乎是在执行cvFindContours之前使用Canny处理图像。

 IplImage* src = cvLoadImage(argv[1], CV_LOAD_IMAGE_GRAYSCALE); IplImage* cc_img = cvCreateImage( cvGetSize(src), src->depth, 3 ); cvSetZero(cc_img); CvScalar(ext_color); CvMemStorage *mem; mem = cvCreateMemStorage(0); CvSeq *contours = 0; // edges returned by Canny might have small gaps between them, which causes some problems during contour detection // Simplest way to solve this s to "dilate" the image. cvCanny(src, src, 10, 50, 3); cvShowImage("Tutorial", src); cvWaitKey(0); int n = cvFindContours( src, mem, &contours, sizeof(CvContour), CV_RETR_CCOMP, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0)); CvSeq* ptr = 0; for (ptr = contours; ptr != NULL; ptr = ptr->h_next) { ext_color = CV_RGB( rand()&255, rand()&255, rand()&255 ); //randomly coloring different contours cvDrawContours(cc_img, ptr, ext_color, CV_RGB(0,0,0), -1, CV_FILLED, 8, cvPoint(0,0)); } cvNamedWindow("Tutorial"); cvShowImage("Tutorial", cc_img); //cvSaveImage("out.png", cc_img); cvWaitKey(0); 

输出:

在此处输入图像描述