opencv3 画轮廓

来源：互联网发布：数据实时可视化编辑：程序博客网时间：2024/06/05 22:30

#include<opencv/cv.h>#include<opencv/highgui.h>int main(){IplImage* src = NULL;IplImage* img = NULL;IplImage* dst = NULL;CvMemStorage* storage = cvCreateMemStorage(0);;CvSeq* contour = 0;int contours = 0;CvScalar external_color;CvScalar hole_color;src = cvLoadImage("view.jpg", 1);img = cvCreateImage(cvGetSize(src), IPL_DEPTH_8U, 1);dst = cvCreateImage(cvGetSize(src), src->depth, src->nChannels);cvCvtColor(src, img, CV_BGR2GRAY);cvThreshold(img, img, 100, 200, CV_THRESH_BINARY);contours = cvFindContours(img, storage, &contour, sizeof(CvContour), CV_RETR_LIST, CV_CHAIN_APPROX_NONE);for (; contour != 0; contour = contour->h_next){external_color = CV_RGB(rand() & 255, rand() & 255, rand() & 255);hole_color = CV_RGB(rand() & 255, rand() & 255, rand() & 255);cvDrawContours(dst, contour, external_color, hole_color, 1, 2, 8);}cvNamedWindow("Contour", 1);cvShowImage("Contour", dst);cvWaitKey(0);cvReleaseMemStorage(&storage);cvReleaseImage(&src);cvReleaseImage(&img);cvReleaseImage(&dst);return 0;}

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