期刊
QUANTUM INFORMATION PROCESSING
卷 15, 期 11, 页码 4415-4440出版社
SPRINGER
DOI: 10.1007/s11128-016-1413-x
关键词
Quantum computing; Quantum image processing; Quantum image scrambling; Quantum image watermarking
资金
- National Natural Science Foundation of China [61170132]
- Natural Science Foundation of Heilongjiang Province of China [F2015021]
- Scientific Technology Research Project of the Education Department of Heilongjiang Province, China [12541059]
- graduate student innovation research project of Northeast Petroleum University, China [YJSCX2016-030NEPU]
In this paper, a novel quantum representation and watermarking scheme based on the controlled rotation of qubits are proposed. Firstly, a flexible representation for quantum color image (FRQCI) is proposed to facilitate the image processing tasks. Some basic image processing operations based on FRQCI representation are introduced. Then, a novel watermarking scheme for quantum images is presented. In our scheme, the carrier image is stored in the phase theta of a qubit; at the same time, the watermark image is embedded into the phase phi of a qubit, which will not affect the carrier image's visual effect. Before being embedded into the carrier image, the watermark image is scrambled to be seemingly meaningless using quantum circuits, which further ensures the security of the watermark image. All the operations mentioned above are implemented by the controlled rotation of qubits. The experimental results on the classical computer show that the proposed watermarking scheme has better visual quality under a higher embedding capacity and outperforms the existing schemes in the literature.
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