Optimized gray-scale image watermarking using DWT-SVD and Firefly Algorithm.
Anurag MishraCharu AgarwalArpita SharmaPunam BediPublished in: Expert Syst. Appl. (2014)
Keyphrases
- image watermarking
- gray scale
- firefly algorithm
- convergence speed
- gray scale images
- singular value decomposition
- binary images
- discrete wavelet transform
- color images
- gray level
- jpeg compression
- geometric attacks
- lossy compression
- digital watermarking
- copyright protection
- watermarking algorithm
- least squares
- geometric distortions
- additive noise
- motion estimation
- digital images
- pattern recognition
- subband
- watermarking technique
- lossless compression
- error diffusion
- structuring elements