Index: /trunk/psModules/src/detrend/pmBias.c
===================================================================
--- /trunk/psModules/src/detrend/pmBias.c	(revision 15161)
+++ /trunk/psModules/src/detrend/pmBias.c	(revision 15162)
@@ -25,6 +25,13 @@
                          )
 {
-    assert(in);
-    assert(sub);
+    PS_ASSERT_PTR_NON_NULL(in, false);
+    PS_ASSERT_PTR_NON_NULL(in->image, false);
+    PS_ASSERT_IMAGE_TYPE(in->image, PS_TYPE_F32, false);
+    PS_ASSERT_IMAGE_NON_EMPTY(in->image, false);
+    PS_ASSERT_PTR_NON_NULL(sub, false);
+    PS_ASSERT_PTR_NON_NULL(sub->image, false);
+    PS_ASSERT_IMAGE_TYPE(sub->image, PS_TYPE_F32, false);
+    PS_ASSERT_IMAGE_NON_EMPTY(sub->image, false);
+    PS_ASSERT_IMAGES_SIZE_EQUAL(in->image, sub->image, false);
 
     psImage *inImage  = in->image;      // The input image