- The pattern of apparent motion of image objects between two consecutive frames caused by the movement of object or camera
- It is 2D vector field where each vector is a displacement vector showing the movement of points from first frame to second
- Details about optical flow: see blog posting in References section below
- Sparse optical flow: computing the optical flow using the information about the corner location
- Dense optical flow: computing the optical flow for all the points in the frame
http://sintel.is.tue.mpg.de/downloads
https://learnopencv.com/optical-flow-in-opencv/
https://nanonets.com/blog/optical-flow/
https://docs.opencv.org/3.4/d4/dee/tutorial_optical_flow.html
https://docs.opencv.org/3.4/d3/dc1/tutorial_basic_linear_transform.html