Acta Photonica Sinica, Volume. 49, Issue 9, 0910001(2020)
Multiple Color Images Encryption via Compressive Holography and Spatial Multiplexing
Figures & Tables(18)
Fig. 2. Schematic setup of multiple color image encryption based on space division multiplexing
Fig. 4. Flow chart of the proposed multiple color image encryption and decryption process
Fig. 9. The simulated results of encryption and decryption security on RPM
Fig. 10. The simulated results of encryption and decryption security on propagating distance
Fig. 11. The simulated results to investigate the robustness against occlusion attack (sampling ratio
Fig. 12. Simulated results on the robust of decryption against Gaussian noise with the different standard deviation
Table 1. Definition of variables and description of dimensions
View tableView in ArticleTable 1. Definition of variables and description of dimensions
Variable Description Dimensions f cThe c channel of vectorized multiple color images( N x ·N y ·L )×1R Diagonal matrix of RPMs ( N x ·N y ·L )×(N x ·N y ·L )B Block diagonal matrix composed of multiple 2D discrete fourier transform (DFT) matrix ( N x ·N y ·L )×(N x ·N y ·L )D 2D DFT matrix ( N x ·N y )×(N x ·N y )D －12D inverse DFT matrix ( N x ·N y )×(N x ·N y )Q l ,c PSF of the c channel ofl color image( N x ·N y )×(N x ·N y )Q cPSF of the c channel of multiple color images( N x ·N y )×(N x ·N y ·L )g cThe c channel of vectorized encrypted color hologram( N x ·N y )×1g Vectorization of encrypted color hologram ( N x ·N y )×3
Table 2. The performance comparison of color image with inherent noise
View tableView in ArticleTable 2. The performance comparison of color image with inherent noise
Inherent noise reconstruction Un-inherent noise reconstruction SNR PSNR NC SNR PSNR NC “A” 54.844 67.546 0.998 59.419 71.504 0.998 “H” 57.571 70.276 0.998 60.999 73.251 0.998 “T” 57.580 72.527 0.998 61.002 75.573 0.998 “V” 57.116 70.527 0.998 59.009 72.171 0.998 “lena” 21.903 24.337 0.948 8 27.612 28.990 0.992 “house” 19.684 23.091 0.940 5 24.650 27.231 0.988 “airplane” 24.426 23.641 0.959 30.388 28.438 0.995 “peppers” 20.672 24.002 5 0.944 7 27.114 29.343 0.990
Table 3. The performance comparison of multiple self-sparse color image
View tableView in ArticleTable 3. The performance comparison of multiple self-sparse color image
Unencrypted reconstruction Encrypted reconstruction SNR PSNR NC SNR PSNR NC “A” 33.043 48.594 0.974 59.419 71.504 0.998 “H” 34.663 50.375 0.975 61.000 73.251 0.998 “T” 36.835 54.582 0.981 61.002 75.573 0.998 “V” 36.070 52.246 0.977 59.009 72.171 0.998
Table 4. The performance comparison of multiple complex color image shown
View tableView in ArticleTable 4. The performance comparison of multiple complex color image shown
Unencrypted reconstruction Encrypted reconstruction SNR PSNR NC SNR PSNR NC “lena” 10.821 14.406 0.803 27.611 28.990 0.992 “house” 11.096 15.459 0.846 24.650 27.231 0.988 “airplane” 7.952 8.909 0.557 30.388 28.438 0.995 “peppers” 8.703 13.352 0.810 27.114 29.343 0.990
Table 5. The performance comparison of occlusion attack
View tableView in ArticleTable 5. The performance comparison of occlusion attack
75% 50% 20% 10% Avg_SNR 24.922 22.783 19.595 16.688 Avg_PSNR 26.315 24.445 21.697 19.151 Avg_NC 0.986 0.977 0.966 0.944
Table 6. The robust performance comparison of decryption under Gaussian noise
View tableView in ArticleTable 6. The robust performance comparison of decryption under Gaussian noise
0.1 0.2 0.3 0.4 Avg_SNR 22.960 19.551 17.062 15.079 Avg_PSNR 25.738 24.131 24.207 23.463 Avg_NC 0.987 0.985 0.977 0.974
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Cheng ZHANG, Hai-tao XU, Yuan-yuan ZHU, Jun TANG, Sui WEI. Multiple Color Images Encryption via Compressive Holography and Spatial Multiplexing[J]. Acta Photonica Sinica, 2020, 49(9): 0910001
Paper Information
Category: Image Processing
Received: Apr. 26, 2020
Accepted: Jul. 21, 2020
Published Online: Dec. 26, 2020
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