FastCVAT

FastCVAT is a CVAT fork focused on fast and precise bounding-box annotation with automatic snapping and streamlined assists.

Feature Highlights

• Crosshair overlap and edge-alignment guides when drawing.
• Smart snapping while drawing or dragging rectangles with configurable tolerance.
• Equal-spacing hints that preserve grid layouts during starts and drags.
• Auto rectangle mode after switching labels via shortcut.

Install & Run

Follow the official CVAT installation steps. Clone this fork instead of the upstream repo and launch with the usual commands:

git clone https://github.com/<your-org>/fastcvat.git
cd fastcvat
docker compose up -d

The web UI remains at http://localhost:8080 by default and stays API-compatible with CVAT.

Development Notes

• docker-compose.dev.yml contains the development-only service configuration used while running the stack locally.

Using the Assists

• Configure toggles and tolerances under Settings → FastCVAT Features.
• Assist modifier defaults to Ctrl; equal-spacing modifier defaults to Alt.
• The Shortcuts tab exposes an "Auto rectangle after switching label" toggle so users can opt out.

Changelog

0.1.0 — 2025-09-22

• Added crosshair alignment and snapping visuals for rectangles (e820a7b, 9cc06b0).
• Implemented equal-spacing hints/snaps during rectangle create and drag (9147c70).
• Introduced FastCVAT settings tab with modifier customization (417b891, 9147c70, c618c56).
• Enabled auto rectangle after label switch via feature toggle (43b66ec).
• Forced final rectangle coordinates to snap exactly on completion (6e891a4).
• Updated dev Redis port mapping to 16666 to prevent conflicts (5ac9716).

License

MIT License, identical to upstream CVAT. See LICENSE.