DCT-based Robust Watermarking with Swarm Intelligence Concepts
Digital watermarking, in conjunction with cryptography, is one of the two major categories for information security. Unlike cryptography that the encrypted information represents like noisy patterns, by using watermarking, the watermarked contents look almost identical to its original counterpart, while it still retains the capability to counteract intentional signal processing by others and keeps the existence of the hidden watermark. From this point of view, watermarking is suitable for covert communication since it tends not to cause the suspicion by others. Besides, there must be requirements to keep both the embedded watermark alive and the watermarked contents acceptable. In this paper, we make use of a technique for swarm intelligence, named bacterial foraging, for obtaining an optimized watermarking algorithm with a properly designed fitness function comprising the possible requirements including the watermarked image quality and the capability for the existence of extracted watermark. With our integration, simulation results demonstrate the advantages and effectiveness of the proposed algorithm.
Hsiang-Cheh Huang Yueh-Hong Chen Guan-Yu Lin
Department of Electrical Engineering National University of Kaohsiung Kaohsiung,Taiwan,R.O.C. Dept of Computer Sci.and Info.Eng.Far East University Tainan,Taiwan,R.O.C.
国际会议
The Fifth International Conference on Information Assurance and Security(第五届信息保障与安全国际会议)
西安
英文
464-467
2009-08-18（万方平台首次上网日期，不代表论文的发表时间）