Secure and Efficient Image Transmission Scheme for Smart Cities Using Sparse Signal Transformation and Parallel Compressive Sensing

Figure 7

(a) The cipher image generated by the original CS scheme; (b) the measurement value matrix generated by the original CS scheme; (c) the decrypted image of (a); (d) the cipher image generated by the proposed SST-PCS scheme; (e) the measurement value matrix produced by the proposed SST-PCS scheme; (f) the reconstructed image of (d).

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