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CAT Coral Annotation Tool

For Structure from Motion (SfM) Orthomosaic coral reef annotation and visualization.

1. Project Creator

Drag & drop SfM orthomosaic TIF files to create a new file-based annotation project. Supports multiple TIFs and shapefiles.

Create Project
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2. Coral Annotation

Draw lines, boxes, and polygons to annotate coral features. Create and manage annotation projects with JSON storage.

Start Annotating

COG Converter

Transform standard GeoTIFF files into Cloud Optimized format for fast web viewing

Open Converter

✨ Features

🔄 Auto-Discovery

Automatically detects COG files in your data directory

🚀 Fast Streaming

TiTiler-powered dynamic tile generation for instant viewing

🎯 High Zoom

Zoom up to 2000x for pixel-level inspection

📦 Batch Processing

Convert multiple orthomosaics simultaneously

📁 File-Based Projects

Create and manage annotation projects with JSON storage

🎨 Vector Annotations

Draw polygons, lines, and points with custom attributes

📊 GeoJSON Export

Export annotations in standard GeoJSON format

🗂️ Shapefile Support

Import and work with existing shapefile layers