MedianFlow
lastmod 2026-11-10created 2022-07-122 edits
MedianFlow is an algorithm for tracking objects in video. It tracks multiple points inside the target region forward and backward with Lucas-Kanade optical flow, then estimates the object's position and scale change from the median of the displacements. A notable feature is that it filters out unreliable points using the forward-backward error. It was proposed as a component of the TLD tracker and is implemented in OpenCV's tracking module.