Digital Watermarking for Images-Its Analysis and Improvement Using Digital Signal Processing Technique-.
Akio MiyazakiPublished in: IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (2002)
Keyphrases
- digital watermarking
- digital signal processing
- image analysis
- image data
- input image
- high frequency
- geometric distortions
- discrete wavelet transform
- test images
- signal processing
- edge detection
- image registration
- image segmentation
- image restoration
- watermarking algorithm
- gray level images
- copyright protection
- feature extraction