SIFT is a method to: - Detect keypoints (interesting, stable points in the image)- Describe them in a way that is invariant to scale and rotationScale Invariance - SIFT is robust to images taken at different zoom levels (scales).- It does this by detecting keypoints in multiple scales, not just a single image resolution.Detector: Difference of Gaussian (DoG)\begin{equation}D(x,y,\sigma)=L(x,y,k\..
