1、contour 轮廓检测#ifdef _CH_#pragma package #endif#ifndef _EiC#include “cv.h“#include “cxcore.h“#include “highgui.h“#include #endif#define w 500int levels = 3;CvSeq* contours = 0;void on_trackbar(int pos)IplImage* cnt_img = cvCreateImage( cvSize(w,w), 8, 3 );CvSeq* _contours = contours;int _levels = leve
2、ls - 3;if( _levels h_next-h_next-h_next;cvZero( cnt_img );cvDrawContours( cnt_img, _contours, CV_RGB(255,0,0), CV_RGB(0,255,0), _levels, 3, CV_AA, cvPoint(0,0) );cvShowImage( “contours“, cnt_img );cvReleaseImage( int main( int argc, char* argv )int i, j;CvMemStorage* storage = cvCreateMemStorage(0);
3、IplImage* img = cvCreateImage( cvSize(w,w), 8, 1 );cvZero( img );for( i=0; i 6; i+ )int dx = (i%2)*250 - 30;int dy = (i/2)*150;CvScalar white = cvRealScalar(255);CvScalar black = cvRealScalar(0);if( i = 0 )for( j = 0; j = 10; j+ )double angle = (j+5)*CV_PI/21;cvLine(img, cvPoint(cvRound(dx+100+j*10-
4、80*cos(angle),cvRound(dy+100-90*sin(angle),cvPoint(cvRound(dx+100+j*10-30*cos(angle),cvRound(dy+100-30*sin(angle), white, 1, 8, 0);cvEllipse( img, cvPoint(dx+150, dy+100), cvSize(100,70), 0, 0, 360, white, -1, 8, 0 );cvEllipse( img, cvPoint(dx+115, dy+70), cvSize(30,20), 0, 0, 360, black, -1, 8, 0 )
5、;cvEllipse( img, cvPoint(dx+185, dy+70), cvSize(30,20), 0, 0, 360, black, -1, 8, 0 );cvEllipse( img, cvPoint(dx+115, dy+70), cvSize(15,15), 0, 0, 360, white, -1, 8, 0 );cvEllipse( img, cvPoint(dx+185, dy+70), cvSize(15,15), 0, 0, 360, white, -1, 8, 0 );cvEllipse( img, cvPoint(dx+115, dy+70), cvSize(
6、5,5), 0, 0, 360, black, -1, 8, 0 );cvEllipse( img, cvPoint(dx+185, dy+70), cvSize(5,5), 0, 0, 360, black, -1, 8, 0 );cvEllipse( img, cvPoint(dx+150, dy+100), cvSize(10,5), 0, 0, 360, black, -1, 8, 0 );cvEllipse( img, cvPoint(dx+150, dy+150), cvSize(40,10), 0, 0, 360, black, -1, 8, 0 );cvEllipse( img
7、, cvPoint(dx+27, dy+100), cvSize(20,35), 0, 0, 360, white, -1, 8, 0 );cvEllipse( img, cvPoint(dx+273, dy+100), cvSize(20,35), 0, 0, 360, white, -1, 8, 0 );cvNamedWindow( “image“, 1 );cvShowImage( “image“, img );cvFindContours( img, storage, / comment this out if you do not want approximationcontours = cvApproxPoly( contours, sizeof(CvContour), storage, CV_POLY_APPROX_DP, 3, 1 );cvNamedWindow( “contours“, 1 );cvCreateTrackbar( “levels+3“, “contours“, on_trackbar(0);cvWaitKey(0);cvReleaseMemStorage( cvReleaseImage( return 0;#ifdef _EiCmain(1,“);#endif
