Enhancement of scanned documents in Besov spaces using wavelet domain representations.
Kathrin BerknerPublished in: Document Recognition and Retrieval (2002)
Keyphrases
- wavelet domain
- scanned documents
- denoising
- total variation
- noise removal
- image denoising
- wavelet coefficients
- wavelet shrinkage
- spatial domain
- shift invariant
- discrete wavelet transform
- wavelet transform
- multiscale
- multiresolution
- document images
- image processing
- human visual system
- subband
- image enhancement
- text detection
- frequency domain
- denoising algorithm
- natural images
- noisy images
- high frequency
- translation invariant
- visual quality
- optical character recognition
- higher order
- edge detection
- image segmentation