ADD file via upload

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p8btn9vm4 9 months ago
parent 6a8f85419e
commit 71b760b0f6

@ -0,0 +1,51 @@
#include <stdio.h>
#include <time.h>
#define IDX(n) ((n) % 3)
float kx[3] = { 0.25, 0.5, 0.25 };
float ky[3] = { 0.25, 0.5, 0.25 };
void applySeparableGaussianBlur(float src[5][5], float dst[5][5], int h, int w, float kx[3], float ky[3]) {
float buf[5][5] = { 0 };
for (int i = 0; i < h; i++) {
for (int j = 1; j < w - 1; j++) {
buf[i][j] = src[i][j - 1] * kx[0] + src[i][j] * kx[1] + src[i][j + 1] * kx[2];
}
}
for (int i = 1; i < h - 1; i++) {
for (int j = 0; j < w; j++) {
dst[i][j] = buf[i - 1][j] * ky[0] + buf[i][j] * ky[1] + buf[i + 1][j] * ky[2];
}
}
}
int main() {
float src[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 dst[5][5] = { 0 };
clock_t start = clock();
applySeparableGaussianBlur(src, dst, 5, 5, kx, ky);
clock_t end = clock();
printf("模糊后的图像矩阵:\n");
for (int i = 0; i < 5; i++) {
for (int j = 0; j < 5; j++) {
printf("%.2f ", dst[i][j]);
}
printf("\n");
}
double time_taken = (double)(end - start) / CLOCKS_PER_SEC;
printf("运行时间: %e 秒\n", time_taken);
return 0;
}
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