Changeset 17870 for trunk/psphot/src/psphotFindFootprints.c

Timestamp:

May 30, 2008, 4:09:46 PM (18 years ago)

Author:

eugene

Message:

fix errors in calculation of sig image; API change: sig image is now actual S/N²

File:

• trunk/psphot/src/psphotFindFootprints.c (modified) (3 diffs)

trunk/psphot/src/psphotFindFootprints.c

@@ -18 +18 @@
     PS_ASSERT (status, false);
 
-    float effArea = psMetadataLookupF32 (&status, recipe, "EFFECTIVE_AREA"); 
-    psAssert (status, "EFFECTIVE_AREA missing: call psphotFindPeaks first"); 
+    // XXX do we need to use the same threshold here as for peaks?  does it make sense for
+    // these to be different?
 
-    float threshold = PS_SQR(FOOTPRINT_NSIGMA_LIMIT)/effArea;
+    float threshold = PS_SQR(FOOTPRINT_NSIGMA_LIMIT);
 
     int growRadius = 0;
@@ -31 +31 @@
     PS_ASSERT (status, false);
 
-    // XXX do we need to use the same threshold here as for peaks?  does it make sense for
-    // these to be different?
-
     // find the raw footprints & assign the peaks to those footprints 
     psArray *footprints = pmFootprintsFind (significance, threshold, npixMin);
@@ -39 +36 @@
     // XXX handle the error conditions here
 
-    // footprints now owns the peaks; after culling (below), we will rebuild
-    // the peaks array
+    // footprints now owns the peaks; after culling (below), we will rebuild the peaks array
     psFree (detections->peaks);