Watermarking Scheme Based on DCT and DHT

摘要：

A new watermarking scheme based on DCT and DHT is presented. First, the host image is transformed as a whole by DCT. Second, the low and middle frequency region of the coefficient matrix is transformed by DHT. At last the watermarking image is embedded into the region of the DHT coefficient block. The experimental results show that the scheme is easy to be realized and the embedded watermark is effectively robust against various image processing operations such as JPEG lossy compression, noise, cropping, scaling, filtering etc.

关键词： Information hiding digital watermarking DCT DHT robustness

作者: Jianqin Zhou Lingyun He Cheng Shangguan

作者单位: Telecommunication School, Hangzhou Dianzi University, Hangzhou, 310018 China Computer Science School Telecommunication School, Hangzhou Dianzi University, Hangzhou, 310018 China Computer Science School, Anhui Univ.of Technology, Maanshan, 243002 China

会议类型: 国际会议

会议名称: Second International Symposium on Electronic Commerce and Security(第二届电子商务与安全国际研究大会)(ISECS 2009)

会议地点: 南昌

会议语种:英文

页码: 223-227

在线出版日期: 2009-05-22（万方平台首次上网日期，不代表论文的发表时间）