21-06-2012, 05:44 PM
A Secure Skin Tone based Steganography Using Wavelet Transform
A Secure Skin Tone based Steganography.pdf (Size: 349.89 KB / Downloads: 66)
Abstract
Steganography is the art of hiding the existence of
data in another transmission medium to achieve secret
communication. Steganography method used in this paper is
based on biometrics. And the biometric feature used to
implement Steganography is skin tone region of images [1].
Here secret data is embedded within skin region of image that
will provide an excellent secure location for data hiding. For
this skin tone detection is performed using HSV (Hue,
Saturation and Value) color space. Additionally secret data
embedding is performed using frequency domain approach -
DWT (Discrete Wavelet Transform), DWT outperforms than
DCT (Discrete Cosine Transform).
INTRODUCTION
In this highly digitalized world, the Internet serves as an
important role for data transmission and sharing. However,
since it is a worldwide and publicized medium, some
confidential data might be stolen, copied, modified, or
destroyed by an unintended observer. Therefore, security
problems become an essential issue. Encryption is a
well-know procedure for secured data transmission [2].
Although encryption achieves certain security effects, they
make the secret messages unreadable and unnatural.
PROPOSED METHOD
Proposed method introduces a new method of embedding
secret data within skin region as it is not that much sensitive
to HVS (Human Visual System) [1].This takes advantage of
biometrics features such as skin tone, instead of embedding
data anywhere in image, data will be embedded in selected
regions. Overview of method is briefly introduced as follows.
At first skin tone detection is performed on input image using
HSV (Hue, saturation, value) color space. Secondly, cover
image is transformed in frequency domain. This is performed
by applying.
CONCLUSION
Digital Steganography is a fascinating scientific area
which falls under the umbrella of security systems. In this
paper Biometric Steganography is presented that uses skin
region of images in DWT domain for embedding secret data.
By embedding data in only certain region (here skin region)
and not in whole image security is enhanced. Two cases for
data embedding are considered, with cropping and without
cropping. It is ob served that both offer enough security. In
with cropping case no one can extract message without
having value of cropped region.