Fix for forward projection of images with negative index for the buffered region
Fix for forward projection of images with negative index for the
buffered region

fabienmomey/RTK,ipsusila/RTK,SimonRit/RTK,dsarrut/RTK,SimonRit/RTK,ldqcarbon/RTK,ldqcarbon/RTK,dsarrut/RTK,ldqcarbon/RTK,SimonRit/RTK,SimonRit/RTK,dsarrut/RTK,ipsusila/RTK,fabienmomey/RTK,ldqcarbon/RTK,dsarrut/RTK,ldqcarbon/RTK,ipsusila/RTK,dsarrut/RTK,fabienmomey/RTK,fabienmomey/RTK,fabienmomey/RTK,fabienmomey/RTK,dsarrut/RTK,ipsusila/RTK,dsarrut/RTK,fabienmomey/RTK,ipsusila/RTK,ipsusila/RTK,ldqcarbon/RTK,ipsusila/RTK,ldqcarbon/RTK