Adaptive color image watermarking by the use of quaternion image moments.
E. D. TsougenisGeorge A. PapakostasDimitris E. KoulouriotisEvangelos G. KarakasisPublished in: Expert Syst. Appl. (2014)
Keyphrases
- image watermarking
- image features
- geometric distortions
- image regions
- input image
- color texture
- multiscale
- image data
- image representation
- gray level images
- color images
- lossy compression
- pixel values
- additive noise
- copyright protection
- spread spectrum
- moment invariants
- natural images
- jpeg compression
- test images
- high resolution
- feature extraction
- discrete wavelet transform
- watermarking algorithm
- watermarking technique
- binary images
- digital watermarking