forked from pi7mcrg2k/opcomplex
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
1.3 KiB
52 lines
1.3 KiB
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include <string.h>
|
|
|
|
void applyGaussianBlur(void*, void*, int, int, float[3][3]);
|
|
void print(void* _a, int h, int w);
|
|
int main() {
|
|
float inputImage[5][5] = {
|
|
{1,2,3,4,5},
|
|
{6,7,8,9,10},
|
|
{11,12,13,14,15},
|
|
{16,17,18,19,20},
|
|
{21,22,23,24,25}
|
|
};
|
|
float kernel[3][3] = {
|
|
{1.0f/16, 2.0f/16, 1.0f/16},
|
|
{2.0f/16, 4.0f/16, 2.0f/16},
|
|
{1.0f/16, 2.0f/16, 1.0f/16}
|
|
};
|
|
float outputImage[5][5] = {0};
|
|
clock_t start = clock();
|
|
applyGaussianBlur(inputImage, outputImage, 5, 5, kernel);
|
|
clock_t end = clock();
|
|
printf("Time: %lf s\n", (double)(end-start) / CLOCKS_PER_SEC);
|
|
print(outputImage, 5, 5);
|
|
}
|
|
|
|
void applyGaussianBlur(void* _src, void* _dst,
|
|
int h, int w, float kernel[3][3]) {
|
|
int i, j;
|
|
float (*src)[w] = (float(*)[w])_src;
|
|
float (*dst)[w] = (float(*)[w])_dst;
|
|
for(i=1; i<h-1; i++)
|
|
for(j=1; j<w-1; j++) {
|
|
dst[i][j] =
|
|
src[i-1][j-1]*kernel[0][0]+src[i-1][j ]*kernel[0][1]+src[i-1][j+1]*kernel[0][2]+
|
|
src[i ][j-1]*kernel[1][0]+src[i ][j ]*kernel[1][1]+src[i ][j+1]*kernel[1][2]+
|
|
src[i+1][j-1]*kernel[2][0]+src[i+1][j ]*kernel[2][1]+src[i+1][j+1]*kernel[2][2];
|
|
}
|
|
}
|
|
|
|
void print(void* _a, int h, int w) {
|
|
float (*a)[w] = (float(*)[w])_a;
|
|
int i, j;
|
|
for(i=0; i<h; i++) {
|
|
for(j=0; j<w; j++) {
|
|
printf("%5.1f ", a[i][j]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
} |