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According to the documentation, the function KeyPoints[] computes features only using SURF, but what about SIFT or FAST features?

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    $\begingroup$ SIFT is patented. FAST is rather special-purpose, focusing only on corner detection. Those are IMO the most probable reasons why these algorithms have not been implemented. $\endgroup$ – Oleksandr R. Jan 5 '15 at 1:56
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    $\begingroup$ @OleksandrR as the user mentions SURF is patented too... $\endgroup$ – M.R. Nov 3 '15 at 16:16

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