Block-based watermarking for color images using visibility of quantization noise.
Kuo-Cheng LiuPublished in: Int. J. Imaging Syst. Technol. (2010)
Keyphrases
- quantization noise
- color images
- color channels
- color information
- coded images
- gray scale
- quantization error
- discrete cosine transform
- reconstruction error
- digital images
- color space
- watermarking scheme
- image processing
- watermarking algorithm
- motion estimation
- error diffusion
- motion compensation
- peak signal to noise ratio
- block size
- spatially varying
- error concealment
- dct coefficients
- digital camera
- image compression