opencv将图像像素保存为txt文档

[qq_30115427]

运行出不来结果直接return0

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include<opencv2/opencv.hpp>


using namespace cv;

int main ( int argc , char** argv )
{
	FILE* fp;

	IplImage* img;

	int width;
	int height;
	int step;
	int channels;

	int i,j,k,counter=0,row=0;

	uchar* data;

	CvMat* mat = cvCreateMat(480,512,CV_8UC1);

	CvFileStorage* fs = cvOpenFileStorage("example.xml",0,CV_STORAGE_WRITE);

	//Load image

	if ( argc==3 && (img = cvLoadImage ( argv[1],0))!=0)
	{
		printf ("Load image successfully!\n");
		//getchar();


	//Processing the image data
	
	width =img -> width;
	height = img -> height;
	step = img -> widthStep;
	printf("%d\n",step);
	channels = img -> nChannels;
	printf("%d\n",channels);
	data = (uchar*)img -> imageData;

	printf ("Processing a size of %d X %d and step %d with %d channels image.\n", width, height , step, channels);

	//getchar();

	fp=fopen("img.txt","w");

	for ( i=0; i<height; i++)
	{
		fprintf (fp,"%d\t",row );
		for ( j=0; j<width; j++)
		{			
			for (k=0; k<channels; k++)
			{
				fprintf (fp,"%d\t", data[i*step+j*channels+k]);
				counter++;
			}
			//fprintf(fp,"\t");
		}
		row++;
		fprintf (fp,"\n");
	}

	fprintf(fp,"%d\n",counter);

	fclose(fp);

	for ( i=0; i<height; i++)
	{

		for ( j=0; j<width; j++)
		{			
			for (k=0; k<channels; k++)
			{
				((uchar*)(mat->data.ptr + mat->step*i))[j]=data[i*step+j*channels+k];
	
			}

		}


	}


	cvWrite(fs,"A",mat,cvAttrList(0,0));

	cvSaveImage(argv[2],mat);

	cvReleaseFileStorage(&fs);

	cvReleaseMat(&mat);


	//Show the image

	cvNamedWindow ( "image" , 1 );

	cvShowImage ( "image" , img );

	cvWaitKey ( 0 );

	cvDestroyWindow ( "image" );

	cvReleaseImage ( & img );
}
	return 0;

}

程序“[4116] save_img_txt.exe”已退出，返回值为 0 (0x0)。

[笨笨仔]

你自己设断点看一下判断条件不就行了？
像素数据中包含大量的非显示字符，如果你要以TXT形式打开并保存，请先将它们转换成可显示的ASCII字符。

[赵4老师]

仅供参考：

#include <iostream>
#include <fstream>
#include <string>
#include <windows.h>
#include <gdiplus.h>
#pragma comment(lib, "gdiplus.lib")

using namespace std;
using namespace Gdiplus;

int main() {
    GdiplusStartupInput gdiplusstartupinput;
    ULONG_PTR gdiplustoken;
    GdiplusStartup(&gdiplustoken, &gdiplusstartupinput, NULL);

    wstring infilename(L"1.jpg");
    string outfilename("color.txt");

    Bitmap* bmp = new Bitmap(infilename.c_str());
    UINT height = bmp->GetHeight();
    UINT width  = bmp->GetWidth();
    cout << "width " << width << ", height " << height << endl;

    Color color;
    ofstream fout(outfilename.c_str());

    for (UINT y = 0; y < height; y++)
    for (UINT x = 0; x < width ; x++) {
            bmp->GetPixel(x, y, &color);
            fout << x << "," << y << ";"
                 << (int)color.GetRed()   << ","
                 << (int)color.GetGreen() << ","
                 << (int)color.GetBlue()  << endl;
    }

    fout.close();

    delete bmp;
    GdiplusShutdown(gdiplustoken);
    return 0;
}

[shiter]

顶楼上，直接用赵老师代码，多简介

[qq_30115427]

谢谢赵老师！！！！！！！

[qq_30115427]

引用 2 楼 zhao4zhong1 的回复:

仅供参考：

#include <iostream>
#include <fstream>
#include <string>
#include <windows.h>
#include <gdiplus.h>
#pragma comment(lib, "gdiplus.lib")

using namespace std;
using namespace Gdiplus;

int main() {
    GdiplusStartupInput gdiplusstartupinput;
    ULONG_PTR gdiplustoken;
    GdiplusStartup(&gdiplustoken, &gdiplusstartupinput, NULL);

    wstring infilename(L"1.jpg");
    string outfilename("color.txt");

    Bitmap* bmp = new Bitmap(infilename.c_str());
    UINT height = bmp->GetHeight();
    UINT width  = bmp->GetWidth();
    cout << "width " << width << ", height " << height << endl;

    Color color;
    ofstream fout(outfilename.c_str());

    for (UINT y = 0; y < height; y++)
    for (UINT x = 0; x < width ; x++) {
            bmp->GetPixel(x, y, &color);
            fout << x << "," << y << ";"
                 << (int)color.GetRed()   << ","
                 << (int)color.GetGreen() << ","
                 << (int)color.GetBlue()  << endl;
    }

    fout.close();

    delete bmp;
    GdiplusShutdown(gdiplustoken);
    return 0;
}

如果是深度数据应该怎么改，用kinect