MSER is based on taking regions that stay same for wide range of thresholds. It basically extracts co-variant regions from an image. In theparticular exampleofFind features using MSER with SURF feature descriptor.
%Extracts the regions that stay same in the image.
regions = detectMSERFeatures(I);
%Extracts the surf features from the regions that are obtained from the detectMSERFeatures function.
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