Instance Segmentation Python Packages

ultralytics

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

supervision

We write your reusable computer vision tools. 💜

inference-gpu

Turn any computer or edge device into a command center for your computer vision projects.

inference-cli

Turn any computer or edge device into a command center for your computer vision projects.

rfdetr

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

mmdet

OpenMMLab Detection Toolbox and Benchmark

inference-sdk

Turn any computer or edge device into a command center for your computer vision projects.

sahi

Framework agnostic sliced/tiled inference + interactive ui + error analysis plots

inference

Turn any computer or edge device into a command center for your computer vision projects.

imgviz

Rich Image Visualization with Minimum Dependency (no OpenCV, Matplotlib)

ultralytics-opencv-headless

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

mask-rcnn-12rics

Mask R-CNN for object detection and instance segmentation on Keras and TensorFlow

albumentationsx

Next-generation Albumentations: dual-licensed for open-source and commercial use

autodistill

Images to inference with no labeling (use foundation models to train supervised models).

x-anylabeling-cvhub

Effortless data labeling with AI support from Segment Anything and other awesome models.

inference-cpu

Turn any computer or edge device into a command center for your computer vision projects.

inference-core

Turn any computer or edge device into a command center for your computer vision projects.

coralnet-toolbox

Tools for panoptic segmentation and developing machine learning models for benthic imagery

paddledet

Object Detection toolkit based on PaddlePaddle. It supports object detection, instance segmentation, multiple object tracking and real-time multi-person keypoint detection.

biapy

Open source Python library for building bioimage analysis pipelines

yolozu

Framework-agnostic vision toolkit for training and evaluation

yolo-tiling

Tile (slice) a YOLO-formatted dataset for small detection, segmentation, and classification

vernier

High-performance, parity-preserving COCO-style evaluation

labelme2coco

A lightweight package for converting your labelme annotations into COCO object detection format.