int main()
#endif
{
KLT_FeatureList fl;
KLT_FeatureHistory fh;
KLT_FeatureTable ft;
int i;
ft = KLTReadFeatureTable(NULL, "features.txt");
fl = KLTCreateFeatureList(ft->nFeatures);
KLTExtractFeatureList(fl, ft, 1);
KLTWriteFeatureList(fl, "feat1.txt", "%3d");
KLTReadFeatureList(fl, "feat1.txt");
KLTStoreFeatureList(fl, ft, 2);
KLTWriteFeatureTable(ft, "ft2.txt", "%3d");
fh = KLTCreateFeatureHistory(ft->nFrames);
KLTExtractFeatureHistory(fh, ft, 5);
printf("The feature history of feature number 5:\n\n");
for (i = 0 ; i < fh->nFrames ; i++)
printf("%d: (%5.1f,%5.1f) = %d\n",
i, fh->feature[i]->x, fh->feature[i]->y,
fh->feature[i]->val);
KLTStoreFeatureHistory(fh, ft, 8);
KLTWriteFeatureTable(ft, "ft3.txt", "%6.1f");
return 0;
}
KLT_FeatureHistory KLTReadFeatureHistory(
KLT_FeatureHistory fh_in,
char *fname)
{
FILE *fp;
KLT_FeatureHistory fh;
int nFrames;
structureType id;
int indx;
KLT_BOOL binary; /* whether file is binary or text */
int i;
fp = fopen(fname, "rb");
if (fp == NULL) KLTError("(KLTReadFeatureHistory) Can't open file '%s' "
"for reading", fname);
if (KLT_verbose >= 1) fprintf(stderr, "(KLT) Reading feature history from '%s'\n", fname);
id = _readHeader(fp, &nFrames, NULL, &binary);
if (id != FEATURE_HISTORY) KLTError("(KLTReadFeatureHistory) File '%s' does not contain "
"a FeatureHistory", fname);
if (fh_in == NULL) {
fh = KLTCreateFeatureHistory(nFrames);
fh->nFrames = nFrames;
}
else {
fh = fh_in;
if (fh->nFrames != nFrames)
KLTError("(KLTReadFeatureHistory) The feature history passed "
"does not contain the same number of frames as "
"the feature history in file '%s' ", fname);
}
if (!binary) { /* text file */
for (i = 0 ; i < fh->nFrames ; i++) {
fscanf(fp, "%d |", &indx);
if (indx != i)
KLTError("(KLTReadFeatureHistory) Bad index at i = %d"
"-- %d", i, indx);
_readFeatureTxt(fp, fh->feature[i]);
}
} else { /* binary file */
for (i = 0 ; i < fh->nFrames ; i++) {
_readFeatureBin(fp, fh->feature[i]);
}
}
fclose(fp);
return fh;
}
