COCO Segmentation to JSON Converter — Detectron2 Dataset Tool

Convert segmentation mask images into MS COCO format JSON annotations instantly.

This tool automatically extracts polygons, bounding boxes, and category labels from segmentation masks and generates COCO-compatible datasets for Detectron2, YOLO, and other computer vision frameworks.

What you get:

- Ready-to-use Python script

- Automatic polygon + bbox extraction

- COCO format JSON export

- Compatible with Detectron2 & YOLO pipelines

- Works with any custom dataset

Perfect for computer vision engineers and ML researchers.

Instant download · Commercial use allowed