Keyphrases
- directed graph
- lossy compression
- image quality
- lossless compression
- image compression
- random walk
- pattern matching
- bit rate
- compression ratio
- data hiding
- low bit rate
- graph structure
- watermarking algorithm
- undirected graph
- gray level images
- visual quality
- directed acyclic graph
- image features
- watermarking technique
- pixel values
- error correction
- inter frame
- quadtree
- video coding
- binary images
- wavelet transform