Hi, I have two images: http://mercurius.f-snet.com/offset1.png http://mercurius.f-snet.com/offset1.png http://mercurius.f-snet.com/offset2.png http://mercurius.f-snet.com/offset2.png They are the same in visually by eyes, but actually they are different because of margin. Does anyone know any algorithm or way to compare these two images but ignores the offset of images? (I mean, offset2.png can be treated like offset1.png + n pixels offset, it only moved, not changed.) If I do boost::gil::equal_pixels(offset1, offset2), I will get false because they are different. I need a way to compare offset1.png and offset2.png with moving detection. Any suggestion is welcome! Thanks. -- View this message in context: http://www.nabble.com/Does-anyone-know-how-to-detect-image-offset--tp2391331... Sent from the Boost - Users mailing list archive at Nabble.com.