Keyphrases
- color images
- color information
- color space
- watermarking algorithm
- gray scale
- digital images
- color correction
- image processing
- watermarking technique
- color image processing
- grayscale images
- color image segmentation
- gray scale images
- color quantization
- color components
- color texture
- color channels
- image watermarking
- spread spectrum
- gray level images
- vector space
- watermark embedding
- image authentication
- color bands
- watermark detection
- color vision
- color difference
- digital watermarking
- copyright protection
- watermarking scheme
- signal processing