canny邊緣檢測 demo
阿新 • • 發佈:2017-05-08
filename channels rfi 作用 namespace str named names amp
#include <iostream> #include <string> #include <sstream> #include <opencv/cv.h> #include <opencv/highgui.h> using namespace std; int String2int(const string& str_) { int _nre = 0; stringstream _ss; _ss << str_; _ss >> _nre;return _nre; } void DoCanny(const string& strFileName_) { //原彩色圖片 IplImage* _pIplImageIn = cvLoadImage(strFileName_.data()); if (_pIplImageIn == NULL) { return; } //彩色圖片轉換成灰度圖放置的圖片 IplImage* _pIplImageCanny = cvCreateImage(cvGetSize(_pIplImageIn), _pIplImageIn->depth, 1); cvCvtColor(_pIplImageIn, _pIplImageCanny, CV_RGB2GRAY);//CV_RGB2GRAY將rgb圖轉成灰度圖 //只有邊緣路徑的圖片 IplImage* _pIplImageOut = cvCreateImage(cvGetSize(_pIplImageIn), IPL_DEPTH_8U, 1); //邊緣檢測只能作用於灰度圖 if (_pIplImageCanny->nChannels != 1) { return; } //邊緣檢測操作 cvCanny(_pIplImageCanny, _pIplImageOut, 50, 200, 3); cvNamedWindow("Src",0); cvShowImage("Src", _pIplImageIn); cvNamedWindow("Canny",0); cvShowImage("Canny", _pIplImageOut); cvWaitKey(0); cvReleaseImage(&_pIplImageIn); cvReleaseImage(&_pIplImageCanny); cvReleaseImage(&_pIplImageOut); cvDestroyWindow("Src"); cvDestroyWindow("Canny"); } int main(int argc, char* argv[]) { if (argc < 2) { cout << "You should give the filename of picture!" << endl; return -1; } DoCanny(argv[1]); return 0; }
canny邊緣檢測 demo