pqpo/SmartCropper
SmartCropper
SmartCropper is a computer vision library and user interface component designed for automated document border identification and perspective-based image cropping. It provides a framework for detecting the edges of items such as ID cards and business cards to suggest crop boundaries and apply geometric transformations that flatten skewed images into front-facing views.
The project features an interactive document scanner interface that allows for manual crop area adjustment. This is achieved through draggable anchor points and a magnifying glass tool for high-precision pixel alignment.
The library covers a range of image processing capabilities, including automatic border detection and perspective transformation. It also includes a customization system for adjusting the visual appearance of guide lines, masks, and anchor points.
Features
- Perspective Warping - Corrects camera angle distortion by transforming skewed four-point selections into flat rectangular views.
- Classical Edge Detection - Uses classical edge detection algorithms to automatically identify the boundaries of documents and cards.
- Document Border Detection - Automatically identifies the edges of IDs, business cards, and papers to isolate them from the background.
- Affine Matrix Transformations - Calculates projection matrices to map source image pixels to a corrected destination coordinate system.
- Intelligent Cropping Engines - Employs computer vision to identify card edges and automatically suggest optimal crop boundaries.
- Interactive Crop and Transform Tools - Provides interactive tools for refining crop boundaries using draggable anchors and precision alignment.
- Perspective-Aware Cropping - A computer vision library for detecting document borders and applying perspective transformations to flatten images.
- Document Scanner Interfaces - Ships an interactive interface with draggable anchors and a magnifying glass for precise manual crop adjustment.
- Image Cropping Components - Includes UI components for manually refining image boundaries using draggable anchors and precision alignment.
- Scanning Workflow Automation - Automates the capture, cropping, and straightening process for digital document storage.
- Magnification Alignment - Provides a magnifying glass tool to enable high-precision pixel alignment of crop anchors.
- Computer Vision Libraries - Smart image cropping and border identification.
