Changeset 9897 for trunk/psModules/src/objects/pmPSF.c

Timestamp:

Nov 7, 2006, 12:55:40 PM (20 years ago)

Author:

jhoblitt

Message:

move pmGrowthCurveGenerate() from pmGrowthCurve.c -> pmPSF.c

File:

• trunk/psModules/src/objects/pmPSF.c (modified) (3 diffs)

trunk/psModules/src/objects/pmPSF.c

@@ -6 +6 @@
  *  @author EAM, IfA
  *
- *  @version $Revision: 1.15 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2006-11-07 09:08:59 $
+ *  @version $Revision: 1.16 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2006-11-07 22:55:40 $
  *
  *  Copyright 2004 Maui High Performance Computing Center, University of Hawaii
@@ -32 +32 @@
 #include "pmPSF.h"
 #include "pmModelGroup.h"
+#include "pmSourcePhotometry.h"
+#include "pmFPAMaskWeight.h"
+#include "psVectorBracket.h"
 
 /*****************************************************************************/
@@ -364 +367 @@
 }
 
+// we generate the growth curve for the center of the image with the specified psf model
+bool pmGrowthCurveGenerate (pmReadout *readout, pmPSF *psf, bool ignore)
+{
+
+    // bool status;
+    float xc, yc, dx, dy;
+    float fitMag, apMag;
+    float radius;
+
+    // create template model
+    pmModel *modelRef = pmModelAlloc(psf->type);
+
+    // use the center of the center pixel of the image
+    xc = 0.5*readout->image->numCols + readout->image->col0 + 0.5;
+    yc = 0.5*readout->image->numRows + readout->image->row0 + 0.5;
+    dx = psf->growth->maxRadius + 1;
+    dy = psf->growth->maxRadius + 1;
+
+    // assign the x and y coords to the image center
+    // create an object with center intensity of 1000
+    modelRef->params->data.F32[PM_PAR_SKY] = 0;
+    modelRef->params->data.F32[PM_PAR_I0] = 1000;
+    modelRef->params->data.F32[PM_PAR_XPOS] = xc;
+    modelRef->params->data.F32[PM_PAR_YPOS] = yc;
+
+    // create modelPSF from this model
+    pmModel *model = pmModelFromPSF (modelRef, psf);
+
+    // measure the fitMag for this model
+    pmSourcePhotometryModel (&fitMag, model);
+    psf->growth->fitMag = fitMag;
+
+    // generate working image for this source
+    psRegion region = {xc - dx, xc + dx, yc - dy, yc + dy};
+    psImage *view = psImageSubset (readout->image, region);
+    psImage *image = psImageCopy (NULL, view, PS_TYPE_F32);
+    psImage *mask = psImageCopy (NULL, view, PS_TYPE_U8);
+
+    psImageInit (image, 0.0);
+    psImageInit (mask, 0);
+
+    // place the reference object in the image center
+    // no need to mask the source here
+    pmModelAdd (image, NULL, model, false, false);
+
+    // loop over a range of source fluxes
+    // no need to interpolate since we have forced the object center
+    // to 0.5, 0.5 above
+    for (int i = 0; i < psf->growth->radius->n; i++) {
+
+        radius = psf->growth->radius->data.F32[i];
+
+        // mask the given aperture and measure the apMag
+        psImageKeepCircle (mask, xc, yc, radius, "OR", PM_MASK_MARK);
+        pmSourcePhotometryAper (&apMag, model, image, mask);
+        psImageKeepCircle (mask, xc, yc, radius, "AND", PS_NOT_U8(PM_MASK_MARK));
+
+        // the 'ignore' mode is for testing
+        if (ignore) {
+            psf->growth->apMag->data.F32[i] = fitMag;
+        } else {
+            psf->growth->apMag->data.F32[i] = apMag;
+        }
+    }
+
+    psf->growth->apRef = psVectorInterpolate (psf->growth->radius, psf->growth->apMag, psf->growth->refRadius);
+    psf->growth->apLoss = psf->growth->fitMag - psf->growth->apRef;
+
+    psLogMsg ("psphot.growth", 4, "GrowthCurve : apLoss : %f\n", psf->growth->apLoss);
+
+    psFree (view);
+    psFree (image);
+    psFree (mask);
+    psFree (model);
+    psFree (modelRef);
+
+    return true;
+}