基于分数阶傅里叶变换和扩展变换抖动调制的鲁棒数字水印算法 (Robust Watermarking Algorithm Based on Fractional Fourier Transform and Spread Transform Dither Modulation).
Yanhua ZhangXiaohu MaPublished in: 计算机科学 (2016)
Keyphrases
- watermarking algorithm
- image watermarking
- fractional fourier transform
- digital image watermarking
- geometric distortions
- geometric attacks
- watermark extraction
- copyright protection
- wavelet domain
- digital watermarking
- watermark detection
- watermarking technique
- jpeg compression
- watermarking method
- watermarking scheme
- spread spectrum
- signal processing
- computational complexity
- image processing
- dct coefficients
- fourier transform
- image classification
- watermark embedding
- higher order
- digital images
- pattern recognition
- similarity measure