A Novel Image Encryption Scheme Based on PWLCM and Standard Map

Figure 7

Histogram analysis: (a, d, g) the histograms of plain images 5.1.11.tiff, 5.1.12.tiff, and 5.1.13.tiff; (b, e, h) the histograms of the respective encrypted results; (c, f, i) the histograms of the respective recovered images.

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