root/snippet/gaussian_blur/test.c

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

#include "image.h"
#include "gaussian.h"

#define WIDTH 512
#define HEIGHT 512

#define INFILE "lena512.raw"
#define OUTFILE "lena512_blured_%d.raw" 
#define DIFFFILE "lena512_blured_diff_%d.raw" 

#define LEVEL 20

int main( int argc, char** argv ){

        FILE* in;
        FILE* out;

        char  filename[255];
        
        int i;
        
        uchar* src;
        uchar* dst[LEVEL];
        uchar* diff[LEVEL-1];

        src = (uchar*)malloc(sizeof(uchar)*WIDTH*HEIGHT);

        for( i = 0 ; i < LEVEL ; i++ )
                dst[i]  = (uchar*)malloc(sizeof(uchar)*WIDTH*HEIGHT);
        
        for( i = 0 ; i < LEVEL-1 ; i++ )
                diff[i] = (uchar*)malloc(sizeof(uchar)*WIDTH*HEIGHT);
        
        
        in = fopen( INFILE, "rb" );
        fread( src, sizeof(uchar), WIDTH*HEIGHT, in );
        fclose( in );

        for( i = 0 ; i < LEVEL ; i++ ){
                gaussian_blur( dst[i], src, i, WIDTH, HEIGHT );

                sprintf( filename, OUTFILE, i );

                out = fopen( filename, "wb" );
                fwrite( dst[i], sizeof(uchar), WIDTH*HEIGHT, out );
                fclose( out );
        }
        
        for( i = 0 ; i < LEVEL-1 ; i++ ){
                difference( diff[i], dst[i+1], dst[i], WIDTH, HEIGHT );
                
                sprintf( filename, DIFFFILE, i );

                out = fopen( filename, "wb" );
                fwrite( diff[i], sizeof(uchar), WIDTH*HEIGHT, out );
                fclose( out );
        }
        
        return 0;
}