OpenCV Image To Matrix In txt files

Question

我这样做是为了获得图像的每个像素值，并将其打印在控制台上

include "stdafx.h"
include "opencv2/imgproc/imgproc.hpp"
include "opencv2/highgui/highgui.hpp"
include <stdlib.h>
include <stdio.h>
using namespace cv;
int main( int argc, char** argv )
{
    IplImage *img = cvLoadImage("lena.jpg");
    CvMat *mat = cvCreateMat(img->height,img->width,CV_32FC3 );
    cvConvert( img, mat );
    for(int i=0;i<10;i++)
       {
         for(int j=0;j<10;j++)
           {
              CvScalar scal = cvGet2D( mat,j,i);
              printf( "(%.f,%.f,%.f)  ",scal.val[0], scal.val[1], scal.val[2] );
           }
         printf("n");
       }
    waitKey(1);
    return 0;
 }

有没有更好的方法来获得每个像素值以及txt.files 中的标头和通道值

Answer 1

如果你能帮上忙，我建议不要使用C API。C++API更容易使用。关于矩阵在文件中的存储，请查看OpenCV中提供的FileStorage类。

这很简单：

写入

FileStorage fs("test.yml", FileStorage::WRITE);
Mat cameraMatrix = (Mat_<double>(3,3) << 1000, 0, 320, 0, 1000, 240, 0, 0, 1);
fs << "cameraMatrix" << cameraMatrix;
...
fs.release();

读取

FileStorage fs("test.yml", FileStorage::READ);
Mat cameraMatrixFromFile;
fs["cameraMatrix"] >> cameraMatrixFromFile;
...
fs.release();

希望能有所帮助！