Changeset 20349

Timestamp:

Oct 24, 2008, 4:18:51 AM (18 years ago)

Author:

Sebastian Jester

Message:

Add NOISE.ADD ppSim recipe option to turn addition of noise to output image on or off

Location:

branches/sj_ippTests_branch_20080929

Files:

• ippconfig/recipes/ppSim.config (modified) (1 diff)
• ppSim/src/ppSimAddNoise.c (modified) (1 diff)

branches/sj_ippTests_branch_20080929/ippconfig/recipes/ppSim.config

@@ -71 +71 @@
 BADPIX.SEED     U64     123456789       # Seed for RNG in creating deterministic bad pixels
 BADPIX.FRAC     F32     0.0001          # Fraction of bad pixels
+
+NOISE.ADD       BOOL    TRUE            # Add noise to image?
 
 ### The following options are used if not defined by the concepts (e.g., usually read from headers)

branches/sj_ippTests_branch_20080929/ppSim/src/ppSimAddNoise.c

@@ -32 +32 @@
             // (generate a static array with the cumulative distribution, use the
             // random number to select a bin from the histogram)
-            signal->data.F32[y][x] += sqrtf(variance->data.F32[y][x]) * ppSimRandomGaussianNorm(rng);
+            if (psMetadataLookupBool(NULL, recipe, "NOISE.ADD")) { // add noise?
+              signal->data.F32[y][x] += sqrtf(variance->data.F32[y][x]) * ppSimRandomGaussianNorm(rng);
+            }
             signal->data.F32[y][x] /= gain; // Converting to ADU
         }