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| 2017-03-08 03:06:14 -0600 | asked a question | SIFT Orientations in Opencv Implementation In the OpenCV implementation of SIFT, keypoints has (angles) in degrees (ranging from 180 to -180), which represents the calculated orientations for these keypoints. Since SIFT assign the dominant orientation of a keypoint using 10 degrees bins in a histogram, how we can get this range of angles? shouldn't the values be in 10 degrees steps? Is that because of the histogram smoothing? |