Changeset 42829 for trunk/psModules/src/camera/pmFPAMaskWeight.c

Timestamp:

May 8, 2025, 4:50:50 PM (12 months ago)

Author:

eugene

Message:

add some clarifying comments

File:

• trunk/psModules/src/camera/pmFPAMaskWeight.c (modified) (3 diffs)

trunk/psModules/src/camera/pmFPAMaskWeight.c

@@ -364 +364 @@
 
 
+// NOTE: this function attempts to modify the variance to ensure the sky pixels
+// have a signal-to-noise distribution consistent with 1.0
 bool pmReadoutVarianceRenormalise(const pmReadout *readout, psImageMaskType maskVal,
                                   int sample, float minValid, float maxValid)
@@ -415 +417 @@
 
                 signoise->data.F32[index] = image->data.F32[y][x] / sqrtf(variance->data.F32[y][x]);
+
+                // a high S/N pixel is not likely to be part of the sky
+                // consider skipping them
+                // if (signoise->data.F32[index] > 10) continue;
+
                 index++;
             }
@@ -434 +441 @@
 
             signoise->data.F32[index] = image->data.F32[y][x] / sqrtf(variance->data.F32[y][x]);
+
+            // a high S/N pixel is not likely to be part of the sky
+            // consider skipping them
+            // if (signoise->data.F32[index] > 10) continue;
             index++;
         }