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Table 1 PSNR at different compression ratio of the CT sequence

From: Simultaneous encryption and compression of medical images based on optimized tensor compressed sensing with 3D Lorenz

Methods

Compression ratio

\(\frac{{(256)^{3} }}{{(512)^{3} }} = 0.125\)

\(\frac{{(352)^{3} }}{{(512)^{3} }} = 0.33\)

\(\frac{{(384)^{3} }}{{(128)^{3} }} = 0.42\)

\(\frac{{(416)^{3} }}{{(512)^{3} }} = 0.54\)

\(\frac{{(448)^{3} }}{{(512)^{3} }} = 0.67\)

\(\frac{{(480)^{3} }}{{(512)^{3} }} = 0.82\)

Algorithm 1

6.72

11.26

12.22

19.29

24.00

30.49

Algorithm 2

31.12

36.12

38.00

40.34

43.01

47.28

Algorithm 3

24.55

27.78

28.74

30.03

32.30

34.67

Proposed algorithm

37.76

43.17

45.56

48.43

51.95

57.26