The Capacity Estimation Approach for Digital Watermark in JPEG Images
The watermarking quality is determined by three factors such as robustness, imperceptibility and capacity, in which capacity is the most important. When capacity is high, the robustness of watermarking is increasing. However, the imperceptibility is decreasing, so it is worthwhile to ensure the accuracy of data hiding. In this paper we propose a new approach to estimating the data hiding capacity of JPEG-compressed images, which not only takes the human visual system into consideration, but also adopts adaptive quantization table. We test the capacity in terms of different JPEG compression by using the approach, and compare it with Wastons model. The experimental results show that the capacity has greatly increased under certain watermark robustness and security.
YANG Su-min WANG Jia-zhen ZHANG Zheng-bao DING Guo-Liang
Department of Computer Engineering, Ordnance Engineering College, Shijiazhuang 050003, China
国际会议
北京
英文
2007-08-05（万方平台首次上网日期，不代表论文的发表时间）