Fig. 7
Three-channel optical encryption with coherence Stokes vector. a–c and j–m show the recovered three-channel images and color image with correct decryption key, i.e., \(p_{\text {R}}=0.80\). d–f and n–q show the recovered three-channel images and color image with incorrect decryption key, \(p_\text {R}=1.00\). g–i and r–u show the recovered images in the noise environments with \(\textrm{SNR} = -13.40\) dB and \(\textrm{SNR} = -13.61\) dB, respectively