Nonlinear edge-preserving diffusion with adaptive source for document images binarization.
Jiebin GuoChuanjiang HeXiaoting ZhangPublished in: Appl. Math. Comput. (2019)
Keyphrases
- document images
- edge preserving
- anisotropic diffusion
- nonlinear diffusion
- diffusion equation
- noise reduction
- image restoration
- document image analysis
- partial differential equations
- noise removal
- edge detection
- image binarization
- document analysis
- least squares
- optical character recognition
- diffusion process
- smoothing filter
- speckle noise
- half quadratic
- structure tensor
- shift invariant
- document processing
- scanned documents
- binarization method
- image processing
- document image retrieval
- natural images