Optical flow estimates how each pixel moved from one frame to the next, producing a dense map of motion. Products use it to smooth shaky video, generate in-between frames, compress smartly, and feed motion cues into higher-level analysis.
Definition
The per-pixel motion between two video frames, shown as a field of vectors. Underpins stabilisation, frame interpolation, and motion analysis.
Optical flow estimates how each pixel moved from one frame to the next, producing a dense map of motion. Products use it to smooth shaky video, generate in-between frames, compress smartly, and feed motion cues into higher-level analysis.
Also known as
flow field, motion estimation