LabelU

Spec sheet

Purpose

LabelU is a multimodal data annotation platform for image, video, and audio tasks.Read 9 Oct 2026 · github.com

Deployment

LabelU can be installed locally with pip and run at localhost:8000; the README specifies Python 3.11.Read 8 Oct 2026 · github.com

License

The repository states that LabelU is released under the Apache 2.0 license.Read 9 Oct 2026 · github.com

Maker

The LabelU repository is published under the OpenDataLab GitHub organization.Read 9 Oct 2026 · github.com

AI annotation

Image AI auto-annotation supports batch tasks and real-time progress, with reference servers for Florence-2, GroundingDINO plus SAM ViT-B, and SAM 3.Read 8 Oct 2026 · github.com

AI auto-annotation

AI services can automatically detect and segment image objects, with batch annotation and real-time progress tracking.Read 9 Oct 2026 · github.com

AI model options

The project provides reference servers for Florence-2, GroundingDINO with SAM ViT-B, and SAM 3.Read 9 Oct 2026 · github.com

AI resource limits

The reference AI models list minimum memory requirements of about 4 GB for Florence-2 and GroundingDINO with SAM ViT-B, and about 8 GB for SAM 3; SAM 3 requires CUDA 12.6 or later.Read 9 Oct 2026 · github.com

Audio annotation

Audio tools support segmentation, classification, and information extraction.Read 9 Oct 2026 · github.com

Database option

SQLite is the documented default database, and MySQL support is available as an optional installation.Read 9 Oct 2026 · github.com

Export formats

The project says it supports exporting annotation data in JSON, COCO, and MASK formats.Read 9 Oct 2026 · github.com

Image annotation

Image tools include 2D bounding boxes, semantic segmentation, polylines, and keypoints.Read 9 Oct 2026 · github.com

Image tools

Image annotation includes 2D bounding boxes, semantic segmentation, polylines, and keypoints.Read 8 Oct 2026 · github.com

Online access

The maker links to an online LabelU instance and a browser based annotation toolkit.Read 8 Oct 2026 · github.com

Pre-annotations

Users can load pre-annotated data and refine or adjust it.Read 9 Oct 2026 · github.com

Self-hosting

The README gives local installation steps using Python 3.11, pip, and a local server at localhost:8000, with Windows Anaconda Prompt instructions and a macOS Intel note.Read 9 Oct 2026 · github.com

Storage integration

LabelU can import data from S3-compatible object storage, including AWS S3 and MinIO.Read 9 Oct 2026 · github.com

Support channel

The README invites users to join the OpenDataLab official WeChat group.Read 8 Oct 2026 · github.com

Video and audio

The maker describes video and audio annotation for segmentation, classification, and information extraction.Read 8 Oct 2026 · github.com

Video annotation

Video features include segmentation, classification, and information extraction.Read 9 Oct 2026 · github.com

Where Specifiction places it

• Data Labeling Software#21 of 247.2