Steganography Using LSB Substitution and Pixel Value Differencing
Keyword(s):
This chapter describes four techniques that use both the principles of LSB substitution and pixel value differencing (PVD). These techniques use 1×3, 2×2, 2×3, and 3×3 size pixel blocks. In a block, LSB substitution is applied on one of the pixels, which is designated as the central pixel. Using the new value of this central pixel, pixel differences are computed with all its neighboring pixels. Based on these pixel value differences, embedding capacity is decided, and embedding is performed by addition and subtraction operations. The experimental results reveal that when the block size increases, the tolerance to RS analysis and pixel difference histogram (PDH) analysis also increases.
2018 ◽
Vol 2018
◽
pp. 1-14
◽
Keyword(s):
2021 ◽
Vol 2021
(1)
◽
2018 ◽
Vol 2018
◽
pp. 1-11
◽
Keyword(s):
Keyword(s):
2014 ◽
Vol 8
(2)
◽
pp. 55-68
◽
2021 ◽
2016 ◽
Vol 2
(3)
◽
pp. 712
◽