c语言实现灰度图像的腐蚀和膨胀代码

以下是使用C语言实现灰度图像的腐蚀和膨胀的代码示例：

腐蚀：

#include <stdio.h>
#include <stdlib.h>

#define WIDTH 512
#define HEIGHT 512

int main(void)
{
    unsigned char img[HEIGHT][WIDTH];
    unsigned char result[HEIGHT][WIDTH];
    int i, j, x, y;

    // 读取灰度图像
    FILE *fp = fopen("lena512.raw", "rb");
    fread(img, sizeof(unsigned char), WIDTH * HEIGHT, fp);
    fclose(fp);

    // 腐蚀运算
    for (i = 1; i < HEIGHT - 1; i++) {
        for (j = 1; j < WIDTH - 1; j++) {
            unsigned char min = 255;
            for (y = -1; y <= 1; y++) {
                for (x = -1; x <= 1; x++) {
                    if (img[i + y][j + x] < min)
                        min = img[i + y][j + x];
                }
            }
            result[i][j] = min;
        }
    }

    // 保存结果
    fp = fopen("erosion.raw", "wb");
    fwrite(result, sizeof(unsigned char), WIDTH * HEIGHT, fp);
    fclose(fp);

    return 0;
}

膨胀：

#include <stdio.h>
#include <stdlib.h>

#define WIDTH 512
#define HEIGHT 512

int main(void)
{
    unsigned char img[HEIGHT][WIDTH];
    unsigned char result[HEIGHT][WIDTH];
    int i, j, x, y;

    // 读取灰度图像
    FILE *fp = fopen("lena512.raw", "rb");
    fread(img, sizeof(unsigned char), WIDTH * HEIGHT, fp);
    fclose(fp);

    // 膨胀运算
    for (i = 1; i < HEIGHT - 1; i++) {
        for (j = 1; j < WIDTH - 1; j++) {
            unsigned char max = 0;
            for (y = -1; y <= 1; y++) {
                for (x = -1; x <= 1; x++) {
                    if (img[i + y][j + x] > max)
                        max = img[i + y][j + x];
                }
            }
            result[i][j] = max;
        }
    }

    // 保存结果
    fp = fopen("dilation.raw", "wb");
    fwrite(result, sizeof(unsigned char), WIDTH * HEIGHT, fp);
    fclose(fp);

    return 0;
}