main( )
{
load_image_data( ); /* Input of image1 */
sobel_filtering( ); /* Sobel filter is applied to image1 */
save_image_data( ); /* Output of image2 */
return 0;
}
int main(int argc, char* argv[])
{
char *pgmInputFileName, *pgmOutputFileName;
if(argc < 2 || argc > 3) {
printf("Usage: %s InputFile.pgm <Output.pgm>\n", argv[0]);
exit(1);
}
else if(argc == 2) {
pgmInputFileName = argv[1];
pgmOutputFileName = "default_output.pgm";
}
else if(argc == 3) {
pgmInputFileName = argv[1];
pgmOutputFileName = argv[2];
}
load_image_file( pgmInputFileName ); /* Input of image1 */
sobel_filtering( ); /* Sobel filter is applied to image1 */
save_image_file( pgmOutputFileName ); /* Output of image2 */
printf("Output saved...OK\n");
return 0;
}
int main(void)
{
unsigned error;
unsigned char* image;
unsigned width, height;
unsigned char* png;
size_t pngsize;
LodePNGState state;
char filename[] = "handmaze.png"; /* NAME OF INPUT IMAGE */
lodepng_state_init(&state);
/*optionally customize the state*/
state.info_raw.colortype = LCT_GREY;
lodepng_load_file(&png, &pngsize, filename);
error = lodepng_decode(&image, &width, &height, &state, png, pngsize);
if(error) printf("error %u: %s\n", error, lodepng_error_text(error));
free(png);
/*use image here*/
//printf("Width=%d Height=%d\n", width, height);
//FILE * fp;
//fp = fopen("imgout.txt", "w");
//fp = fopen("imgout.ram", "wb");
//int i,x,y;
//char * ramimg = (char*) calloc(2*width*height, sizeof(char));
//for(i = 0; i < 2*width*height; i++){
//fprintf(fp, "%d (%d,%d)=%d\n", i, i%width, i/width, image[i]);
// if(i%2 == 0)
// ramimg[i] = image[i/2];
// else
// ramimg[i] = 0;
//}
//fwrite(ramimg, sizeof(unsigned char), 2*width*height, fp);
//free(ramimg);
//fclose(fp);
//for(y = 0; y < height; y++) {
// for(x = 0; x < width; x++) {
// fprintf(fp, "(%d,%d)=%d\n", x, y, image[coords(x,y,width,height)]);
// }
//}
unsigned char * gaussimg = (unsigned char*) calloc(width*height, sizeof(char));
unsigned char * outimg = (unsigned char*) calloc(width*height, sizeof(char));
gaussian_blur(width, height, image, gaussimg);
sobel_filtering(width, height, gaussimg, outimg);
int right_coord, startx, starty, index1=6, index2=5;
int block_size =blocksize(width, height, image, &startx, &starty, 7, &right_coord, index1, index2);
//printf("blocksize = %d\n", block_size);
int solver;
unsigned char path[144];
int *size=(int *) malloc(sizeof(int));
*size = 0;
solver = dfs(width,height,image, startx, starty, startx, starty, block_size, path, size);
//printf("size = %d\n", *size);
int i1;
for(i1 = *size; i1 >= 0; i1--)
{
printf("%c\n", path[i1]);
}
//int x, y;
//for(x = 0; x < width; x++)
//{
// for(y = 0; y < height; y++)
// {
// outimg[coords(x,y,width,height)] = image[coords(x,y,width,height)];
// }
//}
unsigned char* outpng;
error = lodepng_encode(&outpng, &pngsize, outimg, width, height, &state);
if(!error) lodepng_save_file(outpng, pngsize, "sobel.png"); /* NAME OF OUTPUT IMAGE */
if(error) printf("error %u: %s\n", error, lodepng_error_text(error));
/* CLEANUP */
lodepng_state_cleanup(&state);
free(image);
free(outimg);
return 0;
}
