/* Based on write_minutiae_XYTQ and bz_load */
static void minutiae_to_xyt(struct fp_minutiae *minutiae, int bwidth,
int bheight, unsigned char *buf)
{
int i;
struct fp_minutia *minutia;
struct minutiae_struct c[MAX_FILE_MINUTIAE];
struct xyt_struct *xyt = (struct xyt_struct *) buf;
/* FIXME: only considers first 150 minutiae (MAX_FILE_MINUTIAE) */
/* nist does weird stuff with 150 vs 1000 limits */
int nmin = min(minutiae->num, MAX_FILE_MINUTIAE);
for (i = 0; i < nmin; i++){
minutia = minutiae->list[i];
lfs2nist_minutia_XYT(&c[i].col[0], &c[i].col[1], &c[i].col[2],
minutia, bwidth, bheight);
c[i].col[3] = sround(minutia->reliability * 100.0);
if (c[i].col[2] > 180)
c[i].col[2] -= 360;
}
qsort((void *) &c, (size_t) nmin, sizeof(struct minutiae_struct),
sort_x_y);
for (i = 0; i < nmin; i++) {
xyt->xcol[i] = c[i].col[0];
xyt->ycol[i] = c[i].col[1];
xyt->thetacol[i] = c[i].col[2];
}
xyt->nrows = nmin;
}
/*************************************************************************
**************************************************************************
#cat: lfs2nist_format - Takes a minutiae data structure and converts
#cat: the XYT minutiae attributes in LFS native
#cat: representation to NIST internal representation
Input:
iminutiae - minutiae data structure
iw - width (in pixels) of the grayscale image
ih - height (in pixels) of the grayscale image
Output:
iminutiae - overwrite each minutia element in the minutiae data
sturcture convernt to nist internal minutiae format
**************************************************************************/
void lfs2nist_format(MINUTIAE *iminutiae, int iw, int ih)
{
int i, ox, oy, ot, oq;
MINUTIA *minutia;
for (i = 0; i < iminutiae->num; i++)
{
minutia = iminutiae->list[i];
lfs2nist_minutia_XYT(&ox, &oy, &ot, minutia, iw, ih);
oq = sround(minutia->reliability * 100.0);
minutia->x = ox;
minutia->y = oy;
minutia->direction = ot;
minutia->reliability = (double)oq;
}
}
