#include <stdlib.h>

#include <stdio.h>

#include <math.h>

#include <cv.h>

#include <highgui.h>

#include <string>

using namespace std;

int main(int argc, char *argv[])

{

    IplImage* img = ;

    int height, width, step, channels;

    uchar *data;

    int i, j, k;

    string name = "D://2.bmp";

    // load an image

    img = cvLoadImage(name.c_str());

    if (!img){

        printf("Could not load image file: %s\n",name.c_str());

        //exit(0);

    }

    // get the image data

    height = img->height;

    width = img->width;

    step = img->widthStep;

    channels = img->nChannels;

    data = (uchar *)img->imageData;

    printf("Processing a %dx%d image with %d channels\n", height, width, channels);

    // create a window

    cvNamedWindow("mainWin", CV_WINDOW_AUTOSIZE);

    cvMoveWindow("mainWin", , );

    // invert the image

    for (i = ; i < height; i++) for (j = ; j < width; j++) for (k = ; k < channels; k++)

        data[i*step + j*channels + k] = ~data[i*step + j*channels + k];

    // show the image

    cvShowImage("mainWin", img);

    // wait for a key

    cvWaitKey();

    // release the image

    cvReleaseImage(&img);

    return ;

}