I am trying to match 2 images using SIFT keypoints at which threshold of matching can I say that these images are almost the same thing?

I am trying to match 2 images using SIFT keypoints at which threshold of
matching can I say that these images are almost the same thing?



1.Image comparison - fast algorithm - Stack Overflow

Description:Below are three approaches to solving this problem (and there
are many others). The first is a standard approach in computer vision,
keypoint matching.



2.SIFT: Scale Invariant Feature Transform | AI Shack

Description:Hi, I recently start looking in to using SIFT and SURF for a
personal project. I was interested in what you have to say about storing
and comparing SIFT/SURF ...



3.Azerdark | :v

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Description:I. The Distance Metric. First, the number of features
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use in kNN. There are quite a few ...



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