C 语言图像翻转程序：垂直翻转、水平翻转和双向翻转

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

#define HEIGHT 256 #define WIDTH 256

void flipVertical(unsigned char srcimg[HEIGHT][WIDTH], unsigned char newimg[HEIGHT][WIDTH]) { int i, j; for (i = 0; i < HEIGHT; i++) { for (j = 0; j < WIDTH; j++) { newimg[i][j] = srcimg[HEIGHT - i - 1][j]; } } }

void flipHorizontal(unsigned char srcimg[HEIGHT][WIDTH], unsigned char newimg[HEIGHT][WIDTH]) { int i, j; for (i = 0; i < HEIGHT; i++) { for (j = 0; j < WIDTH; j++) { newimg[i][j] = srcimg[i][WIDTH - j - 1]; } } }

void flipBoth(unsigned char srcimg[HEIGHT][WIDTH], unsigned char newimg[HEIGHT][WIDTH]) { int i, j; for (i = 0; i < HEIGHT; i++) { for (j = 0; j < WIDTH; j++) { newimg[i][j] = srcimg[HEIGHT - i - 1][WIDTH - j - 1]; } } }

int main() { FILE* fpin; FILE* fpout; unsigned char srcimg[HEIGHT][WIDTH]; unsigned char newimg[HEIGHT][WIDTH]; int j, i;

fpin = fopen("C:/barbara512.raw", "rb");
if (fpin == NULL) {
    printf("Failed to open input file.\n");
    return 1;
}

for (i = 0; i < HEIGHT; i++) {
    for (j = 0; j < WIDTH; j++) {
        fread(&srcimg[i][j], 1, 1, fpin);
        printf("%d ", (int)srcimg[i][j]);
    }
    printf("\n");
}

fclose(fpin);

flipVertical(srcimg, newimg);

fpout = fopen("C:/barbara512_vertical.raw", "wb+");
if (fpout == NULL) {
    printf("Failed to open output file.\n");
    return 1;
}

for (i = 0; i < HEIGHT; i++) {
    for (j = 0; j < WIDTH; j++) {
        fwrite(&newimg[i][j], 1, 1, fpout);
    }
}

fclose(fpout);

flipHorizontal(srcimg, newimg);

fpout = fopen("C:/barbara512_horizontal.raw", "wb+");
if (fpout == NULL) {
    printf("Failed to open output file.\n");
    return 1;
}

for (i = 0; i < HEIGHT; i++) {
    for (j = 0; j < WIDTH; j++) {
        fwrite(&newimg[i][j], 1, 1, fpout);
    }
}

fclose(fpout);

flipBoth(srcimg, newimg);

fpout = fopen("C:/barbara512_both.raw", "wb+");
if (fpout == NULL) {
    printf("Failed to open output file.\n");
    return 1;
}

for (i = 0; i < HEIGHT; i++) {
    for (j = 0; j < WIDTH; j++) {
        fwrite(&newimg[i][j], 1, 1, fpout);
    }
}

fclose(fpout);

return 0;

}