期刊
CHINESE PHYSICS B
卷 24, 期 6, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1674-1056/24/6/060505
关键词
joint encryption and watermarking; compressive sensing; chaos; Arnold map
资金
- Chongqing Key Laboratory of Emergency Communications, China [20140504]
- National Natural Science Foundation of China [61173178, 61302161, 61472464]
- Fundamental Research Funds for the Central Universities, China [106112013CDJZR180005, 106112014CDJZR185501]
In this paper, a compressive sensing (CS) and chaotic map-based joint image encryption and watermarking algorithm is proposed. The transform domain coefficients of the original image are scrambled by Arnold map firstly. Then the watermark is adhered to the scrambled data. By compressive sensing, a set of watermarked measurements is obtained as the watermarked cipher image. In this algorithm, watermark embedding and data compression can be performed without knowing the original image; similarly, watermark extraction will not interfere with decryption. Due to the characteristics of CS, this algorithm features compressible cipher image size, flexible watermark capacity, and lossless watermark extraction from the compressed cipher image as well as robustness against packet loss. Simulation results and analyses show that the algorithm achieves good performance in the sense of security, watermark capacity, extraction accuracy, reconstruction, robustness, etc.
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