GitHub - leha-bot/PRLib: Pre-Recognize Library - library with algorithms for improving OCR quality. (original) (raw)

PRLib - Pre-Recognition Library.

The main aim of the library - prepare image for recogntion. Image processing can really help to improve recognition quality.

Features:

• Binarization (Global Otsu, Sauvola, Niblack, Adaptive)
• Deskew
• Denoise (Non-local Means Denoising algorithm)
• Thinning (Zhang-Suen, Guo-Hall)
• Blur detection (LAPM, LAPV, TENG, GLVN)
• Deblur (Gaussian-based)
• White balance (Simple, Grayworld)
• Border detection (Canny-based)
• Removing perspective warp
• Crop

Dependencies: OpenCV + OpenCV contrib, Leptonica.

How to build:

1. Go to the directory with source code
2. Make directory for build:
3. Run cmake:
4. Run make: