A high-capacity lossless watermarking by least mean square estimation

作者：Feng Guo Rui^*; Qian Zhen Xing; Dai Ning Jie

来源：Journal of Optoelectronics - Laser, 2011, 22(6): 911-915.

• High-capacity
• Interpolation algorithms
• Least mean squares
• Local interpolation
• Lossless watermarking
• Optimal weight
• Prior knowledge
• Reversible watermarking
• Subsample

We propose a high-capacity reversible watermarking scheme by choosing the observation and estimation sets. After calculating optimal weights through prior knowledge, the better interpolation algorithm is selected to estimate the full-resolution images. The difference between true and estimated images achieves the higher peak of the histogram. Shifting bins can payload the watermarking bits in the reversible way. At the same time, the better quality of image is obtained. Because the interpolation is adaptively calculated beforehand, the algorithm can totally recovery the full-resolution image and improve the payload of shifting operator.

• 出版日期2011
• 单位上海大学