Instance Segmentation GitHub Repositories (2026) · Open Source Tools

RF-DETR is a real-time object detection and segmentation model architecture developed by Roboflow, SOTA on COCO, designed for fine-tuning. [ICLR 2026]

Ultralytics YOLO27, YOLO26, YOLO11, YOLOv8 — object detection, instance segmentation, semantic segmentation, image classification, pose estimation, object tracking

Image augmentation for computer vision. AGPL-3.0-only or commercial licensing.

Ultralytics YOLOv5 in PyTorch for object detection, instance segmentation, classification, training, and export.

We write your reusable computer vision tools. 💜

Agent skill: outline, mask and count objects in photos with Meta's SAM 3 on your own NVIDIA GPU, with review, exports and a viewer. Works with Claude Code, Codex, Cursor, Pi and other Agent Skills clients.

C++ app for computer vision inference, supporting multiple tasks and backends.

Image annotation with Python. Supports polygon, rectangle, circle, line, point, and AI-assisted annotation.