Comments on "Optimized gray-scale image watermarking using DWT-SVD and Firefly Algorithm".
Musrrat AliChang Wook AhnPublished in: Expert Syst. Appl. (2015)
Keyphrases
- image watermarking
- gray scale
- firefly algorithm
- convergence speed
- gray scale images
- singular value decomposition
- discrete wavelet transform
- binary images
- color images
- jpeg compression
- gray level
- geometric distortions
- digital watermarking
- geometric attacks
- watermarking algorithm
- copyright protection
- error diffusion
- lossy compression
- least squares
- additive noise
- co occurrence
- computer vision
- natural images
- multiresolution