STEGANOGRAPHIC METHOD FOR COLOR IMAGES USING VARIANCE FIELD ESTIMATION AND SCALING FACTOR FOR ENERGY CONSERVATION - Theoretical and Computational Research in the 21st Century - page 98

CLCES ( βs 2 ) 38.5287 1.4417 0.9984 0.9985 2.3584e-4 1.8698e3

CLCES
( T 1 , β s 1 )

38.9540 1.3910 0.9985 0.9986 2.3017e-4 1.7980e3

CLCES
( T 1 , βs 2 )

38.4697 1.4478 0.9984 0.9984 2.4352e-4 1.8804e3

Criteria for the YCbCr color space

LSB 28.0065 7.1783 0.9889 0.9886 0.0081 1.9859e3

WLSB 26.0195 7.3820 0.9885 0.9883 0.0086 0.8277e3

CLCES ( βs 1 ) 28.2348 4.3867 0.9857 0.9866 9.5800e-4 7.1724e3

CLCES ( βs 2 ) 28.5554 4.4563 0.9870 0.9878 0.0013 6.7308e3

CLCES
( T 1 , β s 1 )

28.2612 4.4212 0.9858 0.9867 0.0013 7.1355e3

CLCES
( T 1 , βs 2 )

28.1469 4.3067 0.9853 0.9862 0.0012 7.2982e3

Criteria for the HSV color space

LSB 26.0193 4.2270 0.9795 0.9801 0.0071 1.1578

WLSB 26.0155 4.2287 0.9795 0.9801 0.0073 0.7553

CLCES ( βs 1 ) 26.5489 4.1678 0.9831 0.9830 0.0072 5.2464

CLCES ( βs 2 ) 25.8352 4.4367 0.9803 0.9803 0.0079 5.0933

CLCES
( T 1 , β s 1 )

26.6850 4.1304 0.9833 0.9833 0.0071 5.1190

CLCES
( T 1 , βs 2 )

26.0651 4.2298 0.9810 0.9815 0.0077 5.2505

TABLE 4.2 Performance results for the retrieved secret image “Lena”

Algorithms Criteria for the RGB color space

PSNR dB MAE CC Q NCD

LSB 36.1233 2.7714 0.9955 0.9962 0.00200

WLSB 31.2219 5.0316 0.9954 0.9954 0.00330

CLCES ( βs 1 ) 36.1233 2.7714 0.9955 0.9962 0.00200