Nonlinear Multi-Image Encryption Scheme with the Reality-Preserving Discrete Fractional Angular Transform and DNA Sequences

<table class="table-group" id="tab12"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Theoretical NPCR critical values</td><td class="align_center" colspan="3">NPCR(%)</td></tr><tr class="thead"><td class="align_center">Test group 1</td><td class="align_center">Test group 2</td><td class="align_center">Test group 3</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left"><span style="width: 91.5508ptpx;"><svg height="14.0461pt" id="M245" style="vertical-align:-3.9436pt" version="1.1" viewbox="-0.0498162 -10.1025 91.5508 14.0461" width="91.5508pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M822 650H589L583 622C660 617 677 607 674 561C672 534 664 481 647 390L600 137H596L273 650H126L120 622C176 620 194 615 207 594C221 571 225 557 214 504L161 257C141 166 129 112 121 85C108 42 83 30 29 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Security and Communication Networks

tab12

Table 12

Table 12: Nonlinear Multi-Image Encryption Scheme with the Reality-Preserving Discrete Fractional Angular Transform and DNA Sequences 