Greedy algorithm for image quality optimisation based on turtle-shell steganography.
Guo-Hua QiuChin-Feng LeeChin-Chen ChangPublished in: Int. J. Comput. Sci. Eng. (2020)
Keyphrases
- greedy algorithm
- image quality
- greedy algorithms
- worst case
- image data
- high quality
- dynamic programming
- compression ratio
- quality assessment
- data embedding
- visual quality
- human visual system
- greedy strategy
- information hiding
- pixel values
- objective function
- genetic algorithm
- data hiding
- greedy heuristic
- set cover
- influence maximization
- knapsack problem
- submodular functions
- bit rate
- computational complexity
- lossy compression
- randomized algorithm
- high capacity
- upper bound
- special case
- jpeg images
- secret data