24-07-2014, 02:46 PM
A novel Method in Image Steganography withImproved Image Quality
A novel Method.pptx (Size: 443.42 KB / Downloads: 17)
Introduction
Steganography” is a Greek origin word which means “hidden writing”.
Algorithm
The Proposed Hiding Algorithm.
Least Significant Bit Hiding Algorithm.
Cont…
start sub-iteration 1:
choose one pixel of the image randomly
divide the image into three parts (Red, Green and Blue parts)
hide two by two bits of the secret message in each part of the pixel
in the two least significant bits.
set the image with the new values.
end sub-iteration 1.
The Proposed Hiding Algorithm.
Inputs: RGB image, secret message and the password.
Output: Stego image.
Begin
scan the image row by row and encode it in binary.
encode the secret message in binary.
check the size of the image and the size of the secret message.
Differences between the proposed and the LSB hiding methods
it is clear that the proposed method is more efficient than LSB method because it search about the identical then start hiding.
As well as the change in the bits is quite low and doesn’t affect the image resolution.