Annotation Examples
View different types of annotation demonstrations
Horizontal Bounding Box (HBB)
Traditional horizontal rectangular bounding box annotation, suitable for most object detection tasks. Supports quick drawing and precise adjustments.
Oriented Bounding Box (OBB)
Supports bounding box annotation with arbitrary angle rotation, especially suitable for remote sensing images, text detection and other scenarios.
Center Point Annotation (Point)
Precise center point localization annotation, suitable for object center positioning, small object detection and other tasks.
Core Features
Multiple Annotation Modes
Supports multiple annotation types including rectangular bounding boxes (HBB), oriented bounding boxes (OBB), and keypoint annotations. Intelligent mode switching enhances annotation efficiency for different scenarios.
Precise Annotation Control
Provides pixel-level precise annotation with various adjustment tools. Fine-tune annotation box size, position, and angle through keyboard shortcuts to ensure accuracy.
Efficient Keyboard Shortcuts
Comprehensive keyboard shortcut support for navigation, editing, and view control operations. Customizable shortcut configurations significantly improve annotation workflow efficiency.
One-Click Display
One-click show or hide annotations to avoid interference with image viewing, facilitating annotation in complex dense areas. Smart toggle annotation visibility to enhance annotation workflow efficiency.
Smart Zoom Preview
Multi-level zoom support with quick preview functionality. Smart thumbnail caching technology ensures smooth browsing and editing experience for large images.
Multi-Format Compatibility
Supports various mainstream annotation formats including VOC XML, YOLO TXT, and OBB. Batch import/export capabilities with seamless integration to deep learning frameworks.
Advanced Features
Powerful capabilities for professional users
OBB Rotation Annotation
Support for oriented bounding box annotation at arbitrary angles, suitable for remote sensing images, text detection, and other scenarios
Sub-image Extraction
Intelligent sub-image cropping with automatic annotation coordinate adjustment and batch processing support
Quick Path Logging
Quickly save questionable image paths to log files with Enter key for convenient secondary review
Multi-theme Interface
Choice of modern light, dark, and classic themes for different visual experiences
Smart Preloading
Background preloading technology significantly reduces image switching wait times
Real-time Feedback
Real-time display of annotation statistics with progress and quality feedback