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2018 Volume 27 Issue 7
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Xue Zhang, Xiangfeng Meng, Yurong Wang, Xiulun Yang, Yongkai Yin. 2018: Multiple-image encryption by two-step phase-shifting interferometry and spatial multiplexing of smooth compressed signal, Chinese Physics B, 27(7): 375-383. doi: 10.1088/1674-1056/27/7/074205
Citation: Xue Zhang, Xiangfeng Meng, Yurong Wang, Xiulun Yang, Yongkai Yin. 2018: Multiple-image encryption by two-step phase-shifting interferometry and spatial multiplexing of smooth compressed signal, Chinese Physics B, 27(7): 375-383. doi: 10.1088/1674-1056/27/7/074205
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Multiple-image encryption by two-step phase-shifting interferometry and spatial multiplexing of smooth compressed signal

  • Department of Optics, School of Information Science and Engineering, and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Jinan 250100, China

  • Available Online: 01/01/2018
  • Fund Project: the National Natural Science Foundation of China(Grant . 61775121, 61307003, 61405122, and 11574311)%Key R&D Program of Shandong Province, China(Grant 2018GGX101002)%the Natural Science Foundation of Shandong Province, China(Grant R2016FM03)%the Fundamental Research Funds of Shandong University, China(Grant 2015GN031)
  • A multiple-image encryption method based on two-step phase-shifting interferometry (PSI) and spatial multiplexing of a smooth compressed signal is proposed. In the encoding and encryption process, with the help of four index matrices to store original pixel positions, all the pixels of four secret images are firstly reordered in an ascending order;then, the four reordered images are transformed by five-order Haar wavelet transform and performed sparseness operation. After Arnold transform and pixels sampling operation, one combined image can be grouped with the aid of compressive sensing (CS) and spatial multiplexing techniques. Finally, putting the combined image at the input plane of the PSI encryption scheme, only two interferograms ciphertexts can be obtained. During the decoding and decryption, utilizing all the secret key groups and index matrices keys, all the original secret images can be successfully decrypted by a wave-front retrieval algorithm of two-step PSI, spatial de-multiplexing, inverse Arnold transform, inverse discrete wavelet transform, and pixels reordering operation.
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Multiple-image encryption by two-step phase-shifting interferometry and spatial multiplexing of smooth compressed signal

  • Available Online: 01/01/2018

Abstract: A multiple-image encryption method based on two-step phase-shifting interferometry (PSI) and spatial multiplexing of a smooth compressed signal is proposed. In the encoding and encryption process, with the help of four index matrices to store original pixel positions, all the pixels of four secret images are firstly reordered in an ascending order;then, the four reordered images are transformed by five-order Haar wavelet transform and performed sparseness operation. After Arnold transform and pixels sampling operation, one combined image can be grouped with the aid of compressive sensing (CS) and spatial multiplexing techniques. Finally, putting the combined image at the input plane of the PSI encryption scheme, only two interferograms ciphertexts can be obtained. During the decoding and decryption, utilizing all the secret key groups and index matrices keys, all the original secret images can be successfully decrypted by a wave-front retrieval algorithm of two-step PSI, spatial de-multiplexing, inverse Arnold transform, inverse discrete wavelet transform, and pixels reordering operation.

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