Index: trunk/ppImage/src/ppImage.h
===================================================================
--- trunk/ppImage/src/ppImage.h	(revision 29833)
+++ trunk/ppImage/src/ppImage.h	(revision 30655)
@@ -53,4 +53,5 @@
     bool doCrosstalkMeasure;            // measure crosstalk signal
     bool doCrosstalkCorrect;            // apply crosstalk correction
+    bool addNoise;                      // Add noise to degrade MD image to 3pi
 
     // output files requested
@@ -155,5 +156,4 @@
 bool ppImageDetrendBias(pmReadout *inputReadout, pmReadout *bias, pmReadout *dark, ppImageOptions *options);
 
-//bool ppImageDetrendNonLinear(pmReadout *input, ppImageOptions *options);
 bool ppImageDetrendNonLinear(pmReadout *input, pmFPAview *linearity, pmConfig *config);
 bool ppImageDetrendNonLinearLookup(pmReadout *input, psMetadataItem *dataItem);
@@ -291,3 +291,12 @@
 void ppImageMemoryDump(const char *description);
 
+
+//Functions needed to degrade MD exposures to 3pi exposures
+
+bool ppImageAddNoise(pmConfig *config, ppImageOptions *options, pmFPAview *view, pmFPA *fpa) ;
+double ppImageRandomGaussian (const psRandom *rnd, double mean, double sigma);
+double ppImageRandomGaussianNorm (const psRandom *rnd);
+void ppImageRandomGaussianFree(void);
+
+
 #endif