multumedia_hk1

#include <stdio.h>
#include <stdlib.h>

#include "opencv/cv.h"
#include "opencv/highgui.h"
#include "opencv/cxcore.h"

#define scale 1

int main(int argc, char* argv[])
{
    int w, h, nc;  int step;
    int x, y, i;

    IplImage* img = cvLoadImage("/Users/ranhao/Desktop/introduce to multimedia/hk1/hk1/hk1/7213_Kobe.jpg", CV_LOAD_IMAGE_UNCHANGED );
    //IplImage* img2 = cvLoadImage("/Users/ranhao/Desktop/introduce to multimedia/hk1/kb.jpg", CV_LOAD_IMAGE_UNCHANGED );
    /*
     #define CV_LOAD_IMAGE_UNCHANGED -1         原圖影像
     #define CV_LOAD_IMAGE_GRAYSCALE 0             灰階
     #define CV_LOAD_IMAGE_COLOR 1                 彩色
     #define CV_LOAD_IMAGE_ANYDEPTH 2           任何彩度
     #define CV_LOAD_IMAGE_ANYCOLOR 4           任何彩色
    */
    IplImage* dst;
    IplImage* img3;
    int Y, R, G, B;
    int *ary[9]={0};

    double alpha ;
    double beta ;


    //if( argc == 2 && (img = cvLoadImage(argv[1], -1)) != 0 )
    if( img != 0 ) //
    {
        printf("Channels %d depth %d widthStep %d \n",
               img->nChannels, img->depth, img->widthStep);
        printf("The image Width by Height is %d * %d \n", img->width,img->height);
        printf("The image origin is  %d\n", img->origin);

        step =  img->widthStep;
        w = img->width;
        h = img->height;
        nc = img->nChannels;

        dst = cvCreateImage(
                             cvSize(w, h), //CvSize size,
                             IPL_DEPTH_8U , //int depth,
                             nc  //int channels
                             );
        img3 = cvCreateImage(
                            cvSize(w, h), //CvSize size,
                            IPL_DEPTH_8U , //int depth,
                            nc  //int channels
                            );

        //Open first image
        cvNamedWindow( "Image 1", 1 );
        cvMoveWindow("Image 1", 0,  0);
        cvShowImage( "Image 1", img );
        cvWaitKey(0); //0:wait for entering any keys ; number:unit is ms;

        //Open second image
        /*
         cvNamedWindow( "Image 2", 1 );
        cvMoveWindow("Image 2", 630,  0); //Move to other point on screen
        cvShowImage( "Image 2", img2 );
        cvWaitKey(0);
         */

        uchar* ptr;
        uchar* ptr2;

        int temp;



        for (y = 1; y < h-1; y++)  // using macro
        {
            for (x = 1; x < w-1; x++)
            {
                ptr = &CV_IMAGE_ELEM(img, uchar, y, x *3);
                ptr2 = &CV_IMAGE_ELEM(img3, uchar, y, x *3);
                //CV_IMAGE_ELEM( image, elemtype, row, col )
                //Iplimage  BGR
                temp =
                0*ptr[-2-2*step] +  ptr[-1-2*step]  + 2*ptr[-2*step] + ptr[1-2*step]  + 0*ptr[2-2*step] +
                ptr[-2-step]    + 3*ptr[-1-step]   + 5*ptr[0-step]  + 3*ptr[1-step]  +   ptr[2-step]   +
                2*ptr[-2]        + 5*ptr[-1]        + 9*ptr[0]       + 5*ptr[1]       +  2*ptr[2]       +
                ptr[step-2]     + 3*ptr[step-1]    + 5*ptr[step+0]  + 3*ptr[step+1]  +   ptr[step+2]   +
                0*ptr[2*step-2]  +  ptr[-1+2*step]  + 2*ptr[2*step]  + ptr[1+2*step]  + 0*ptr[2+2*step]  ;
                //  5*5 Filter
                /*
                 0 1 2 1 0
                 1 3 5 3 1
                 2 5 9 5 2
                 1 3 5 3 1
                 0 1 2 1 0
                 */
                ptr2[0] = temp/25;

            }
        }


        cvNamedWindow("Image 3", 1);
        cvMoveWindow("Image 3", 630,  0);
        for (alpha=0.0; alpha<=1.0; alpha = alpha + 0.1)
        {
            beta = 1 - alpha;

            cvAddWeighted(img, beta, img3, alpha, 0.0, dst);

            cvShowImage("Image 3", dst);
            cvWaitKey(150);
        }

        cvWaitKey(0);


        //Destroy and release
        cvDestroyWindow( "Image 2" );
        cvDestroyWindow( "Image 1" );
        //cvDestroyWindow( "Image 4" );
        cvDestroyWindow( "Image 3" );
        cvReleaseImage( &dst );
        cvReleaseImage( &img3 );
        cvReleaseImage( &img );
        //cvReleaseImage( &img2 );
        return 0;
    }


    printf("Can't open image file\n");
    //system("PAUSE");
    return -1;
}