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.
41 lines
1009 B
41 lines
1009 B
#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 = 0.0;
|
|
for (int ki = -1; ki <= 1; ki++)
|
|
{
|
|
for (int kj = -1; kj <= 1; kj++)
|
|
{
|
|
sum += src[i + ki][j + kj] * kernel[ki + 1][kj + 1];
|
|
}
|
|
}
|
|
dst[i][j] = sum;
|
|
}
|
|
}
|
|
}
|
|
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 };
|
|
float kernel[3][3] ={{1/16.0,2/16.0,1/16.0},{2/16.0,4/16.0,2/16.0},{1/16.0,2/16.0,1/16.0}};
|
|
clock_t start = clock();
|
|
applyGaussianBlur(src, dst, 5, 5, kernel);
|
|
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:%f 秒\n", time_taken);
|
|
return 0;
|
|
} |