#include <stdio.h>
#include <time.h>
void applyGaussianBlur(float src[5][5], float dst[5][5], int h, int w, float kernel[3][3]){
	for (int i = 1; i < h - 1; i++) {
        for (int j = 1; j < w - 1; j++) { 
            float sum = 0.0f;
            for (int ki = 0; ki < 3; ki++) {
                for (int kj = 0; kj < 3; kj++) { 
                    sum += src[i + ki - 1][j + kj - 1] * kernel[ki][kj];
                }
            }
            dst[i][j] = sum;
        }
    }
}
int main() {
    float input[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 dst[5][5];
    clock_t start_time = clock();
    applyGaussianBlur(input,dst,5,5,kernel);
    clock_t end_time = clock();
    double time_taken = (double)(end_time - start_time) / CLOCKS_PER_SEC;
    printf("Gaussian Blur applied to the image matrix:\n");
    for (int i = 0; i < 5; i++) {
        for (int j = 0; j <5; j++) {
            printf("%.2f ", dst[i][j]);
        }
        printf("\n");
    }
    printf("Time taken: %f seconds\n", time_taken);
    return 0;
}