PHP参数--memory_limit

以下是一个简单的 C 语言高斯模糊代码示例： ```c #include <stdio.h> #include <stdlib.h> #include <math.h> #define PI 3.14159265358979323846 void gaussian_blur(int *input, int *output, int width, int height, float sigma) { int size = (int)(sigma * 6) + 1; int half_size = size / 2; float *kernel = (float *)malloc(size * sizeof(float)); float sum = 0.0; for (int i = 0; i < size; i++) { kernel[i] = exp(-0.5 * pow((i - half_size) / sigma, 2.0)) / (sqrt(2 * PI) * sigma); sum += kernel[i]; } for (int i = 0; i < size; i++) { kernel[i] /= sum; } for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { float value = 0.0; for (int i = -half_size; i <= half_size; i++) { int index = x + i; if (index < 0) { index = 0; } if (index >= width) { index = width - 1; } value += kernel[i + half_size] * input[y * width + index]; } output[y * width + x] = (int)value; } } free(kernel); } int main() { int width = 5; int height = 5; int input[] = { 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 }; int *output = (int *)malloc(width * height * sizeof(int)); gaussian_blur(input, output, width, height, 1.0); for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { printf("%d ", output[y * width + x]); } printf("\n"); } free(output); return 0; } ``` 这个代码使用了高斯核函数来进行图像模糊处理，其中 sigma 参数表示高斯核函数的标准差，size 参数表示高斯核函数的大小。