Hey guys, SURF is able to compare images which are of different scale but they have to be the same proportion. For example, they are able to match picture 1 (1000x800) to picture 2 (500x400) but if picture 2's dimensions are squashed to (500x300), SURF is not able to detect them.
Also, when doing a comparison between picture 1 (1000x800) and picture 2 (500x400), i tried to rotate picture 2 to 10 degrees right, SURF is able to pick them up, but the bounding box i drew using the same homograph returned isn't working correctly.
Please help...Thanks!