Index: trunk/psModules/src/imcombine/pmSubtractionMask.h
===================================================================
--- trunk/psModules/src/imcombine/pmSubtractionMask.h	(revision 23851)
+++ trunk/psModules/src/imcombine/pmSubtractionMask.h	(revision 26893)
@@ -5,11 +5,13 @@
 
 /// Generate a mask for use in the subtraction process
-psImage *pmSubtractionMask(const psImage *refMask, ///< Mask for the reference image (will be convolved)
-                           const psImage *inMask, ///< Mask for the input image, or NULL
-                           psImageMaskType maskVal, ///< Value to mask out
-                           int size, ///< Half-size of the kernel (pmSubtractionKernels.size)
-                           int footprint, ///< Half-size of the kernel footprint
-                           float badFrac, ///< Maximum fraction of bad input pixels to accept
-                           pmSubtractionMode mode  ///< Subtraction mode
+psImage *pmSubtractionMask(
+    psRegion *bounds,                   ///< Bounds of valid pixels (or NULL), returned
+    const pmReadout *ro1,               ///< Readout 1
+    const pmReadout *ro2,               ///< Readout 2
+    psImageMaskType maskVal,            ///< Value to mask out
+    int size,                           ///< Half-size of the kernel (pmSubtractionKernels.size)
+    int footprint,                      ///< Half-size of the kernel footprint
+    float badFrac,                      ///< Maximum fraction of bad input pixels to accept
+    pmSubtractionMode mode              ///< Subtraction mode
     );