Image Labelling Tool
A fast online tool that annotates images with labels to help data scientists, researchers, and developers create training datasets efficiently.
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Worked Example & Common Values
Below is a sample worked calculation demonstrating how Image Labelling Tool processes input data instantly inside your browser.
Birth date: Jan 15, 1995, Target date: Oct 20, 2023
Chronological Age: 28 Years, 9 Months, 5 Days (10,505 days elapsed)
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About This Tool
Conceptual operation: Label proposals may be generated through configurable heuristics or human-in-the-loop review. The backend computes pixel coordinates, converts shapes to normalized or pixel-space representations, and maps each region to a taxonomy ID. It enforces consistency checks, such as ensuring overlap rules or non-overlapping constraints when required, and validates image dimensions and format compatibility before export. Export pipelines support COCO, Pascal VOC, and YOLO styles to integrate with common training regimes.
Use cases and differentiators: Teams needing rapid dataset creation, audit trails, and cross-project reusability will value taxonomy reuse, versioned label sets, and export customization. The tool supports dataset tagging, rapid revision of labels, and scalable processing for large collections. Its unique differentiators include a centralized label library, strict provenance tracking, and straightforward interoperability with standard ML frameworks, enabling faster iteration and more reliable model performance with less labeling drift.
Implementation details: Annotations are stored with image_id, region geometry, category_id, and confidence where available. The backend preserves version history and supports re-labeling without data loss. It provides optional metadata fields for author, timestamp, and review status to support governance. For localization, taxonomy terms can be mapped to localized labels in supported languages, with export adapters maintaining locale consistency.
How to Use
- Provide inputs: Upload images or supply image URLs and define a taxonomy.
- Choose annotation mode: bounding boxes, polygons, or tag lists.
- Run labeling: accept automated proposals (optional) and apply verification.
- Review & adjust: fix coordinates, add missing labels, and ensure taxonomy consistency.
- Export: select a format (COCO JSON, Pascal VOC XML, YOLO TXT) and download.
- Validate: perform QA checks and resolution of conflicts.
- Integrate: import into your data pipeline or training workflow.
Frequently Asked Questions
Find Quick Answers
What export formats are supported?
Can I reuse label taxonomies across projects?
Is the tool suitable for large datasets?
Does it support localization?
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