1 research outputs found
Capacity Enlargement Of The PVD Steganography Method Using The GLM Technique
In most steganographic methods, increasing in the capacity leads to decrease
in the quality of the stego-image, so in this paper, we propose to combine two
existing techniques, Pixel value differencing and Gray Level Modification, to
come up with a hybrid steganography scheme which can hide more information
without having to compromise much on the quality of the stego-image.
Experimental results demonstrate that the proposed approach has larger capacity
while its results are imperceptible. In comparison with original PVD method
criterion of the quality is declined by 2% dB averagely while the capacity is
increased around 25%