resize2

#include <cv.h>
#include <highgui.h>
#include <iostream>

using namespace cv;

int
main( int argc, char** argv )
{
    if( argc != 4 ) {
        std::cerr << "Usage: " << argv[0] << "　<InputImage>　　<OutputImage>　up:3.0" << std::endl;      return EXIT_FAILURE;  }
　　 float up;

    {

    char* src_img = argv[1];
    Mat src_img;

    src_img = imread( imageName, 1 );

    if( argc != 3 || !up )
    {
        printf( " No image data \n " );
        return -1;
    }

    resize(src_img, dst_img, dst_img.size(), cv::INTER_CUBIC);//画像のサイズを変更 imwrite( argv[2], gray_image );
    namedWindow( src_img, CV_WINDOW_AUTOSIZE );
    namedWindow( "dst_img", CV_WINDOW_AUTOSIZE );

    imshow( src_img, image );
    imshow( "dst_img", dst_img );

    waitKey(0);
    return 0;

}