Reliable information embedding for image/video in the presence of lossy compression

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• 作者：Qing Chen^a ; ^{qchen418@yahoo.com} ; Henri Maî ; tre^b ; Qiu-ping Deng^a
• 关键词：Data hiding ; DCT ; Visual system ; Data compression
• 刊名：Signal Processing: Image Communication
• 出版年：2012
• 出版时间：January, 2012
• 年：2012
• 卷：27
• 期：1
• 页码：66-74
• 全文大小：1314 K

文摘

Lossy compression is inherently contradictory with information hiding and may result in unreliable retrieval of embedded message. For most of the existing data hiding algorithms, the process of dealing with the conflict and trade-off of invisibility, capacity and robustness is done in an experimental fashion. We have developed an image and video unified data-embedding technique. The algorithm is capable of accurately retrieving hidden data after the embedded signals are subjected to JPEG/MPEG compression as long as its compression degree is above the predefined one. Embedding strategy is to integrate data hiding into the JPEG/MPEG coding structures and to combine the adjustment factor of the strength and quantity of data hiding with the control parameter of lossy compression, according to the constraint of human visual system, the demand of hiding capacity and distortion impact of lossy compression. Experimental evaluation demonstrates that the proposed algorithm allows us to hide data invisibly in an accurate retrievable way with effective and flexible trade-off mechanism in the presence of lossy compression. In addition, the scheme is robust to some common attacks including low-pass filtering, noisy interference, frame dropping and transcoding.