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Image Steganography Combination of Spatial and Frequency Domain

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Figure

Figure 1 describes the typical scenario when using DWT. The image to which DWT is applied gets split up into 4 regions LL, LH, HL, and HH respectively
Figure 2 describes the technique graphically.
Table I: Comparison of all three approaches with respect to MSE and PSNR.
Figure 9: MSE and PSNR for Desert Carrier Image

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