+\r
+ bool subtractImages (const ImageFile& rRHS, ImageFile& result) const;\r
+
+ bool addImages (const ImageFile& rRHS, ImageFile& result) const;\r
+\r
+ bool multiplyImages (const ImageFile& rRHS, ImageFile& result) const;\r
+\r
+ bool divideImages (const ImageFile& rRHS, ImageFile& result) const;\r
+\r