7/25/2023 0 Comments Excel 2d histogram![]() Therefore I will need to compare the histograms to see how similar they are, and if the similarity measure passes some threshold value then I can say with confidence the respective images are visually the same - I would be comparing each image's corresponding channel histograms (e.g. I've decided to represent each image using histograms, using three 1D histograms: one for each RGB channel - it's safe for me to just use colour and to ignore texture and edge histograms (An alternative approach uses a single 3D histogram for each image, but I'm avoiding that as it adds extra complexity). ![]() ![]() A picture of a vector computer GUI icon rendered at 64圆4 compared to the same icon rendered at 48x48 (but both images would be scaled down to 32x32 so the histograms have the same total pixel count).A security (CCTV) camera in a museum looking at an exhibit: we want to quickly see if two different video frames show the same scene, but slight differences in lighting and camera focus means they won't be identical.The images are meant to be of the same picture data but are sublty different, so a simple pixel equality check won't work. The images are smallish, varying from 25 to 100px across. ![]() For a small project, I need to compare one image with another - to determine if the images are approximately the same or not.
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