Index: trunk/psLib/src/imageops/psImageCovariance.c
===================================================================
--- trunk/psLib/src/imageops/psImageCovariance.c	(revision 21322)
+++ trunk/psLib/src/imageops/psImageCovariance.c	(revision 21324)
@@ -140,6 +140,6 @@
             continue;
         }
-        for (int y = yMin; y <= yMax; y++) {
-            for (int x = xMin; x <= xMax; x++) {
+        for (int y = covar->yMin; y <= covar->yMax; y++) {
+            for (int x = covar->xMin; x <= covar->xMax; x++) {
                 sum->kernel[y][x] += covar->kernel[y][x];
             }