Lossy compression of gray-scale document images by adaptive-offset quantization.
Kris PopatPublished in: Document Recognition and Retrieval (2001)
Keyphrases
- gray scale
- document images
- lossy compression
- binary images
- gray scale images
- color images
- gray level images
- image quality
- gray level
- lossless compression
- mathematical morphology
- image compression
- pattern matching
- morphological operations
- bit rate
- compression ratio
- error diffusion
- low bit rate
- data hiding
- entropy coding
- visual quality
- structuring elements
- watermarking algorithm
- computer vision
- visual information
- rate distortion
- image analysis
- computational complexity