TY  - JOUR
T1  - Reversible Data Hiding of Images using Trinary Representation
AU - Rasmi, A. AU - Mohanapriya, M. 
JO  - International Journal of Soft Computing
VL  - 13
IS  - 2
SP  - 38
EP  - 47
PY  - 2018
DA  - 2001/08/19
SN  - 1816-9503
DO  - ijscomp.2018.38.47
UR  - https://makhillpublications.co/view-article.php?doi=ijscomp.2018.38.47
KW  - histogram
KW  -least significant bit
KW  -embedding capacity
KW  -grayscale
KW  -reversible data hiding
KW  -Steganography
KW  -cover image
KW  -peak signal to noise ratio
AB  - Reversible data hiding with high capacity is a challenging area of digital image steganography.
Prediction error histogram of images have large frequency of zero values. The modification of prediction error
histograms can be utilized to store secret digits. This study presents a method called to encode a secret image
into digits in base and these are called trits which hides it by modifying the prediction error histogram of the
cover image. This improves the embedding capacity while allowing the original cover image to be recovered
with zero errors. Experimental results indicate that the secret image can be recovered with little loss. The peak
signal to noise ratio of the recovered secret image is above 30 decibels. The embedding capacity is high enough
to allow the hiding of 80×80 secret grayscale images inside 256×256 cover grayscale images. The method is
applicable to color images also. Several predictors are considered in this research and their relative performance
are analyzed and discussed in detail. The performance of the method is compared against several existing
reversible hiding techniques. The method has low computational complexity with fast execution times.
ER  -