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main
p7cx2jokr 3 months ago
parent 6f729c4617
commit 9478efbfc0

47
1.cpp

@ -0,0 +1,47 @@
#include <stdio.h>
#include <math.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++) {
dst[i][j] = 0;
for (int ki = -1; ki <= 1; ki++) {
for (int kj = -1; kj <= 1; kj++) {
dst[i][j] += src[i + ki][j + kj] * kernel[1 + ki][1 + kj];
}
}
}
}
}
int main() {
float src[5][5] = {
{0, 0, 0, 0, 0},
{0, 1, 2, 3, 0},
{0, 4, 5, 6, 0},
{0, 7, 8, 9, 0},
{0, 0, 0, 0, 0}
};
float dst[5][5] = {0};
float kernel[3][3] = {
{1.0/16, 2.0/16, 1.0/16},
{2.0/16, 4.0/16, 2.0/16},
{1.0/16, 2.0/16, 1.0/16}
};
clock_t start = clock();
applyGaussianBlur(src, dst, 5, 5, kernel);
clock_t end = clock();
printf("矩阵结果:\n");
for (int i = 0; i < 5; i++) {
for (int j = 0; j < 5; j++) {
printf("%.2f ", dst[i][j]);
}
printf("\n");
}
printf("步骤1运行时间%f秒\n", (double)(end - start) / CLOCKS_PER_SEC);
return 0;
}
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