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CV4.1: Failed Assertion in function detectAndCompute level>=0...

Why we need a coarse-to-fine strategy to solve the optical flow problem (feature tracking) in practi...

Re-establishing new feature points using Matlab's vision functions...

Inacurate tracking when drawing calcOpticalFlow's outputed feature vector...

Android: Using calcOpticalFlowPyrLK with MatOfPoint2f...

Feature tracking WinForms...