Questions tagged [sift]

For questions related to SIFT, introduced in the paper "Distinctive Image Features from Scale-Invariant Keypoints" (2004) by David G. Lowe, which stands for "Scale Invariant Feature Transform".

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Understanding SIFT descriptor calculation

I need to understand how SIFT calculates the descriptors for the keypoints. Intuitively, i understand that it takes each keypoint, calculates the gradients for each pixel in a neighborhood of the ...
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Can I use the SIFT feature detector on data other than images?

I know how to use SIFT algorithm for images but I never use it for other kinds of data. I have tabular data (x, y, z, time) where x,y,z is the joint position along x, y, z coordinates. Now, can I ...