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#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <math.h>
#include <string.h>
#include <unistd.h>
#include <ppm.h>
#include "gift_features.h"
//#include "extract_features.proto"
#define numH 18
#define numS 3
#define numV 3
#define numGrey 4
int main(int argc, char *argv[]) {
char *in_fname, *out_fname;
char *point_pos;
FILE *ppm_file;
PPM *im_rgb, *im_hsv, *im_quant;
int *colmap, colmap_size;
enum file_types ppm_type;
enum ppm_error the_error;
switch(argc) {
case 2:
in_fname = argv[1];
break;
default:
fprintf(stderr, "Usage: %s ppm_file \n\n", argv[0]);
exit(1);
break;
}
if ((ppm_file = fopen (in_fname, "r")) == NULL) {
fprintf(stderr, "Can't open file: %s", in_fname);
exit(1);
}
/* now get the filename prefix */
out_fname = (char *)malloc((strlen(in_fname) + 10)*sizeof(char));
if ((point_pos = strchr(in_fname, '.')) == NULL) {
fprintf(stderr, "File %s has no ""."" - can't generate features filename\n\n", in_fname);
exit(1);
}
else {
/* must find the *last* "." in the filename */
point_pos = &in_fname[strlen(in_fname)];
while (*point_pos != '.') {
point_pos--;
}
strncpy(out_fname, in_fname, (int)(point_pos - in_fname));
strcat(out_fname, ".fts");
}
#ifdef DEBUG
fprintf(stderr, "Features will be written to file %s\n", out_fname);
#endif
/* read the rgb image from we are going to extract features */
switch(ppm_type = read_magic_no(ppm_file)) {
case PGM_ASC: case PPM_ASC: case PGM_RAW: case PPM_RAW:
if ((the_error = read_ppm(ppm_file, &im_rgb, ppm_type)) != PPM_OK) {
ppm_handle_error(the_error);
exit(1);
}
break;
default:
fprintf(stderr, "Unrecognized file type.\n");
exit(1);
break;
}
/* convert it to hsv */
if ((the_error = rgb2hsv_ppm(im_rgb, &im_hsv)) != PPM_OK) {
ppm_handle_error(the_error);
exit(1);
}
/* quantize the image */
colmap_size = numH*numS*numV + numGrey;
if ((the_error = hsv_quantize_ppm(im_hsv, &im_quant, &colmap, numH, numS, numV, numGrey)) != PPM_OK) {
ppm_handle_error(the_error);
exit(1);
}
/* initialise the variables required for the feature extraction */
init_feature_variables(colmap_size);
/* extract the features */
extract_mode_features(im_quant, colmap, colmap_size);
extract_gabor_features(im_hsv);
/* write them to the file */
if ((the_error = write_mode_features(out_fname, colmap_size)) != PPM_OK) {
ppm_handle_error(the_error);
exit(1);
}
/* everything is OK */
destroy_ppm(&im_hsv);
destroy_ppm(&im_quant);
free(colmap);
exit(0);
}
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