A Comparison of DCT and DWT Block Based Watermarking on Medical Image Quality.
Jason DowlingBirgit M. PlanitzAnthony J. MaederJiang DuBinh PhamColin BoydShaokang ChenAndrew P. BradleyStuart CrozierPublished in: IWDW (2007)
Keyphrases
- image quality
- discrete cosine transform
- lossy compression
- image watermarking
- blocking artifacts
- low bit rate
- image compression
- digital watermarking
- visual quality
- digital watermark
- image quality measures
- bit rate
- jpeg images
- image fidelity
- discrete wavelet transform
- compression ratio
- reconstructed image
- image data
- quality assessment
- human visual system
- copyright protection
- dct coefficients
- transform domain
- subband
- high quality
- block size
- jpeg compression
- image authentication
- peak signal to noise ratio
- dct domain
- multiresolution
- compressed images
- watermarking scheme
- digital images
- spread spectrum
- watermark detection
- image blocks
- image quality assessment
- lossless compression
- pixel values
- wavelet transform
- multiscale
- data hiding
- computational complexity