<span style="font-size:14px;">#include <iostream>#include <string.h>#include <opencv\cxcore.h>#include <opencv\cv.h>#include <opencv\highgui.h>#include <opencv\cvaux.h>#include <fstream>IplImage *image = 0 ;IplImage *image2 = 0 ;using namespace std;int Thresholdness = 141;int ialpha = 20;int ibeta=20;int igamma=20;void onChange(int pos){if(image2) cvReleaseImage(&image2);if(image) cvReleaseImage(&image);image2 = cvLoadImage("grey.bmp",1); // 显示图片image= cvLoadImage("grey.bmp",0);cvThreshold(image,image,Thresholdness,255,CV_THRESH_BINARY); // 分割阈值CvMemStorage* storage = cvCreateMemStorage(0);CvSeq* contours = 0;cvFindContours( image, storage, &contours, sizeof(CvContour), // 查找初始化轮廓CV_RETR_EXTERNAL , CV_CHAIN_APPROX_SIMPLE );if(!contours) return ;int length = contours->total;if(length<10) return ;CvPoint* point = new CvPoint[length]; // 分配轮廓点CvSeqReader reader;CvPoint pt= cvPoint(0,0);;CvSeq *contour2=contours;cvStartReadSeq(contour2, &reader);for (int i = 0; i < length; i++){CV_READ_SEQ_ELEM(pt, reader);point[i]=pt;}cvReleaseMemStorage(&storage);// 显示轮廓曲线for(int i=0;i<length;i++){int j = (i+1)%length;cvLine( image2, point[i],point[j],CV_RGB( 0, 0, 255 ),1,8,0 );}float alpha=ialpha/100.0f;float beta=ibeta/100.0f;float gamma=igamma/100.0f;CvSize size;size.width=3;size.height=3;CvTermCriteria criteria;criteria.type=CV_TERMCRIT_ITER;criteria.max_iter=1000;criteria.epsilon=0.1;cvSnakeImage( image, point,length,&alpha,&beta,&gamma,CV_VALUE,size,criteria,0 );// 显示曲线for(int i=0;i<length;i++){int j = (i+1)%length;cvLine( image2, point[i],point[j],CV_RGB( 0, 255, 0 ),1,8,0 );}delete []point;}int main(int argc, char* argv[]){cvNamedWindow("win1",0);cvCreateTrackbar("Thd", "win1", &Thresholdness, 255, onChange);cvCreateTrackbar("alpha", "win1", &ialpha, 100, onChange);cvCreateTrackbar("beta", "win1", &ibeta, 100, onChange);cvCreateTrackbar("gamma", "win1", &igamma, 100, onChange);cvResizeWindow("win1",300,500);onChange(0);for(;;){if(cvWaitKey(40)==27) break;cvShowImage("win1",image2);}return 0;}</span>
运行结果截图：
，没有天生的信心，只有不断培养的信心。
