1女淑、得到一個(gè)尺寸是原圖1/2的圖像
2、代碼
#include <opencv2/opencv.hpp>
void help(char** argv ) {
std::cout << "\n"
<< "2-06: AUsing cv::pyrDown() to create a new image that is half the width and"
? ? << "? ? ? height of the input image\n"
<< argv[0] <<" <path/image>\n"
<< "For example:\n"
<< argv[0] << " ../faces.png\n"
<< std::endl;
}
int main( int argc, char** argv ) {
if (argc != 2) {
help(argv);
return 0;
}
? cv::Mat img1,img2;
? cv::namedWindow( "Example 2-6-in", cv::WINDOW_AUTOSIZE );
? cv::namedWindow( "Example 2-6-out", cv::WINDOW_AUTOSIZE );
? img1 = cv::imread( argv[1] );
? cv::imshow( "Example 2-6-in", img1 );
? cv::pyrDown( img1, img2);? //降采樣
? cv::imshow( "Example 2-6-out", img2 );
? cv::waitKey(0);
? return 0;
};
