/** @brief Main SIFT routine
*
* takes as input 1) a list of keypoints coordinates and 2) an image.
*
*/
int main(int argc, char **argv)
{
if (argc !=3){
print_usage();
return -1;
}
/** Load image */
int w, h;
float* x = read_image_to_gray(argv[2], &w, &h);
/** Read keypoints locations from file */
int n;
struct sift_keypoint_std * k = sift_read_keyslocation_from_file(argv[1], &n);
/** Compute the SIFT descriptors */
sift_find_ori_and_fill_descriptors(x, w, h, k, n);
/** Save into a file the keypoints with their orientations and their feature vectors */
fprintf_keypoint_std(stdout, k, n);
sift_write_to_file("out.tt", k, n); // TEMP
/* memory deallocation */
xfree(x);
xfree(k);
return 0;
}
int main(void)
{
// create input image
int w = 512;
int h = 512;
float *x = (float*)malloc(w*h*sizeof(float));
for (int i = 0; i < w*h; i++)
x[i] = rand();
// compute sift keypoints
int n;
struct sift_keypoint_std *k = sift_compute_points(x, w, h, &n);
// write to standard output
sift_write_to_file("/dev/stdout", k, n);
// cleanup
free(k);
free(x);
return 0;
}
