/*
build the object structure.
*/
void sortit(picstruct *field, picstruct *dfield, picstruct *wfield,
picstruct *dwfield, infostruct *info, objliststruct *objlist,
PIXTYPE *cdwscan, PIXTYPE *wscan)
{
picstruct *cfield;
objliststruct objlistout, *objlist2;
static objstruct obj;
objstruct *cobj;
pliststruct *pixel;
int i,j,n;
cfield = dfield? dfield: field;
pixel = objlist->plist;
objlistout.obj = NULL;
objlistout.plist = NULL;
objlistout.nobj = objlistout.npix = 0;
/*----- Allocate memory to store object data */
objlist->obj = &obj;
objlist->nobj = 1;
memset(&obj, 0, (size_t)sizeof(objstruct));
objlist->npix = info->pixnb;
obj.firstpix = info->firstpix;
obj.lastpix = info->lastpix;
obj.flag = info->flag;
obj.dthresh = objlist->dthresh;
obj.thresh = objlist->thresh;
preanalyse(0, objlist, ANALYSE_FAST);
/*----- Check if the current strip contains the lower isophote... */
if ((int)obj.ymin < cfield->ymin)
obj.flag |= OBJ_ISO_PB;
if (!(obj.flag & OBJ_OVERFLOW) && (createsubmap(objlist, 0) == RETURN_OK))
{
if (parcelout(objlist, &objlistout) == RETURN_OK)
objlist2 = &objlistout;
else
{
objlist2 = objlist;
for (i=0; i<objlist2->nobj; i++)
objlist2->obj[i].flag |= OBJ_DOVERFLOW;
sprintf(gstr, "%.0f,%.0f", obj.mx+1, obj.my+1);
warning("Deblending overflow for detection at ", gstr);
}
free(obj.submap);
}
else
objlist2 = objlist;
for (i=0; i<objlist2->nobj; i++)
{
preanalyse(i, objlist2, ANALYSE_FULL|ANALYSE_ROBUST);
if (prefs.ext_maxarea && objlist2->obj[i].fdnpix > prefs.ext_maxarea)
continue;
analyse(field, dfield, i, objlist2);
cobj = objlist2->obj + i;
if (prefs.blank_flag)
{
if (createblank(objlist2,i) != RETURN_OK)
{
/*------ Not enough mem. for the BLANK vignet: flag the object now */
cobj->flag |= OBJ_OVERFLOW;
cobj->blank = cobj->dblank = NULL;
sprintf(gstr, "%.0f,%.0f", cobj->mx+1, cobj->my+1);
warning("Memory overflow during masking for detection at ", gstr);
}
}
if ((n=cleanobjlist->nobj) >= prefs.clean_stacksize)
{
objstruct *cleanobj;
int ymin, ymax, victim=0;
ymin = 2000000000; /* No image is expected to be that tall ! */
cleanobj = cleanobjlist->obj;
for (j=0; j<n; j++, cleanobj++)
if (cleanobj->ycmax < ymin)
{
victim = j;
ymin = cleanobj->ycmax;
}
/*---- Warn if there is a possibility for any aperture to be truncated */
if (field->ymax < field->height)
{
cleanobj = &cleanobjlist->obj[victim];
if ((ymax=cleanobj->ycmax) > field->ymax)
{
sprintf(gstr, "Object at position %.0f,%.0f ",
cleanobj->mx+1, cleanobj->my+1);
QWARNING(gstr, "may have some apertures truncated:\n"
" You might want to increase MEMORY_OBJSTACK");
}
else if (ymax>field->yblank && prefs.blank_flag)
{
sprintf(gstr, "Object at position %.0f,%.0f ",
cleanobj->mx+1, cleanobj->my+1);
QWARNING(gstr, "may have some unBLANKed neighbours\n"
" You might want to increase MEMORY_OBJSTACK");
}
}
endobject(field, dfield, wfield, dwfield, victim, cleanobjlist);
subcleanobj(victim);
}
/* Only add the object if it is not swallowed by cleaning */
if (!prefs.clean_flag || clean(field, dfield, i, objlist2))
addcleanobj(cobj);
}
free(objlistout.plist);
free(objlistout.obj);
return;
}
/*
Divide a list of isophotal detections in several parts (deblending).
NOTE: Even if the object is not deblended, the output objlist threshold is
recomputed if a variable threshold is used.
This can return two error codes: DEBLEND_OVERFLOW or MEMORY_ALLOC_ERROR
*/
int deblend(objliststruct *objlistin, int l, objliststruct *objlistout,
int deblend_nthresh, double deblend_mincont, int minarea)
{
objstruct *obj;
static objliststruct debobjlist, debobjlist2;
double thresh, thresh0, value0;
int h,i,j,k,m,subx,suby,subh,subw,
xn,
nbm = NBRANCH,
status;
int *submap;
submap = NULL;
status = RETURN_OK;
xn = deblend_nthresh;
/* reset global static objlist for deblending */
memset(objlist, 0, (size_t)xn*sizeof(objliststruct));
/* initialize local object lists */
debobjlist.obj = debobjlist2.obj = NULL;
debobjlist.plist = debobjlist2.plist = NULL;
debobjlist.nobj = debobjlist2.nobj = 0;
debobjlist.npix = debobjlist2.npix = 0;
/* Create the submap for the object.
* The submap is used in lutz(). We create it here because we may call
* lutz multiple times below, and we only want to create it once.
*/
submap = createsubmap(objlistin, l, &subx, &suby, &subw, &subh);
if (!submap)
{
status = MEMORY_ALLOC_ERROR;
goto exit;
}
/* set thresholds of object lists based on object threshold */
thresh0 = objlistin->obj[l].thresh;
objlistout->thresh = debobjlist2.thresh = thresh0;
/* add input object to global deblending objlist and one local objlist */
if ((status = addobjdeep(l, objlistin, &objlist[0])) != RETURN_OK)
goto exit;
if ((status = addobjdeep(l, objlistin, &debobjlist2)) != RETURN_OK)
goto exit;
value0 = objlist[0].obj[0].fdflux*deblend_mincont;
ok[0] = (short)1;
for (k=1; k<xn; k++)
{
/*------ Calculate threshold */
thresh = objlistin->obj[l].fdpeak;
debobjlist.thresh = thresh > 0.0?
thresh0*pow(thresh/thresh0,(double)k/xn) : thresh0;
/*--------- Build tree (bottom->up) */
if (objlist[k-1].nobj>=NSONMAX)
{
status = DEBLEND_OVERFLOW;
goto exit;
}
for (i=0; i<objlist[k-1].nobj; i++)
{
status = lutz(objlistin->plist, submap, subx, suby, subw,
&objlist[k-1].obj[i], &debobjlist, minarea);
if (status != RETURN_OK)
goto exit;
for (j=h=0; j<debobjlist.nobj; j++)
if (belong(j, &debobjlist, i, &objlist[k-1]))
{
debobjlist.obj[j].thresh = debobjlist.thresh;
if ((status = addobjdeep(j, &debobjlist, &objlist[k]))
!= RETURN_OK)
goto exit;
m = objlist[k].nobj - 1;
if (m>=NSONMAX)
{
status = DEBLEND_OVERFLOW;
goto exit;
}
if (h>=nbm-1)
if (!(son = (short *)
realloc(son,xn*NSONMAX*(nbm+=16)*sizeof(short))))
{
status = MEMORY_ALLOC_ERROR;
goto exit;
}
son[k-1+xn*(i+NSONMAX*(h++))] = (short)m;
ok[k+xn*m] = (short)1;
}
son[k-1+xn*(i+NSONMAX*h)] = (short)-1;
}
}
/*------- cut the right branches (top->down) */
for (k = xn-2; k>=0; k--)
{
obj = objlist[k+1].obj;
for (i=0; i<objlist[k].nobj; i++)
{
for (m=h=0; (j=(int)son[k+xn*(i+NSONMAX*h)])!=-1; h++)
{
if (obj[j].fdflux - obj[j].thresh * obj[j].fdnpix > value0)
m++;
ok[k+xn*i] &= ok[k+1+xn*j];
}
if (m>1)
{
for (h=0; (j=(int)son[k+xn*(i+NSONMAX*h)])!=-1; h++)
if (ok[k+1+xn*j] &&
obj[j].fdflux - obj[j].thresh * obj[j].fdnpix > value0)
{
objlist[k+1].obj[j].flag |= SEP_OBJ_MERGED;
status = addobjdeep(j, &objlist[k+1], &debobjlist2);
if (status != RETURN_OK)
goto exit;
}
ok[k+xn*i] = (short)0;
}
}
}
if (ok[0])
status = addobjdeep(0, &debobjlist2, objlistout);
else
status = gatherup(&debobjlist2, objlistout);
exit:
if (status == DEBLEND_OVERFLOW)
put_errdetail("limit of " NSONMAX_STR " sub-objects reached while "
"deblending. Decrease number of deblending thresholds "
"or increase the detection threshold.");
free(submap);
submap = NULL;
free(debobjlist2.obj);
free(debobjlist2.plist);
for (k=0; k<xn; k++)
{
free(objlist[k].obj);
free(objlist[k].plist);
}
free(debobjlist.obj);
free(debobjlist.plist);
return status;
}
