flowiz

The optical flow visualization toolkit. Read any flow format, render publication-quality color maps, compute error maps against ground truth, compile temporally-consistent videos — or drag-drop a flow file into the browser viewer.

pip install flowiz -U

import flowiz as fz

flow = fz.read("frame_0001.flo")
img = fz.colorize(flow)

• Getting started — install and first render
• Formats — .flo, KITTI, PFM, NumPy, Spring, tensors
• Visualization — color wheel, encodings, legends, quiver
• Metrics — EPE, Fl-score, error maps, compare grids
• flowiz for papers — reproducible figures and citation
• API reference — every public function