Unitrack

unitrack is a PyTorch-native multi-object tracking library that exposes the SORT-family pipeline as a small set of composable primitives: assignment solvers, pairwise cost producers, gates, per-feature state recipes, lifecycle policies, and a typed stage tree that wires them together. Classical IoU+Kalman trackers, soft-assignment differentiable variants, and cascaded or parallel fusions all share the same Tracker core and the same typed records (Detections, Tracklets, FrameContext).

The documentation is organized for two reading orders. New users should start with Getting Started, which covers installation and then walks through the tracker recipes and the tutorial notebooks. Readers who already know the library can jump straight to the API reference for the per-subpackage symbol lists.

Start here

1. Getting Started: install, pick a solver backend, and find the recipes and tutorial notebooks.
2. Migration: mapping the 1.x surface onto 2.0.
3. API Reference: the full, generated symbol reference.