Visualize Vector Field

1 VersionVisualize

Optical-flow renderer. Converts a dense OpticalFlow field into a Middlebury color-wheel Image (color = direction, intensity = magnitude). Magnitude is normalized per frame; use for inspecting or debugging dense optical-flow outputs.

How it fits

Typical backends

Flow debug pipeline from video file.

Caveats

AccuracyThe output is for visual inspection only. Do not derive quantitative flow statistics from the rendered colours — magnitude is normalized per frame, so the same colour maps to different flow speeds across frames.
Parameter interactionmovement_threshold is the colour-normalization floor, not a filter. Every vector is still rendered; raising it only scales down the brightness of slow motion.
State lifetimemovement_threshold is captured once at first invocation; runtime changes have no effect.

Versions

21f19e4elatestdefault
Automated release
6/30/2026