Research Article
HVS-Based Imperceptibility Evaluation for Steganography
@INPROCEEDINGS{10.1007/978-3-642-10485-5_11, author={Ma Xiu-ying and Lin Jia-jun}, title={HVS-Based Imperceptibility Evaluation for Steganography}, proceedings={Scalable Information Systems. 4th International ICST Conference, INFOSCALE 2009, Hong Kong, June 10-11, 2009, Revised Selected Papers}, proceedings_a={INFOSCALE}, year={2012}, month={5}, keywords={steganography HVS evaluation imperceptibility Peak Signal to Noise Ratio}, doi={10.1007/978-3-642-10485-5_11} }- Ma Xiu-ying
Lin Jia-jun
Year: 2012
HVS-Based Imperceptibility Evaluation for Steganography
INFOSCALE
Springer
DOI: 10.1007/978-3-642-10485-5_11
Abstract
The aim of steganography is to conceal the very existence of hidden communication, so imperceptibility is the primary demand. However there are short of corresponding evaluation methods. Most researchers still use Peak-Signal-to-Noise Ratio (PSNR) for their imperceptibility evaluation, while ignoring the speciality of steganography. In this paper, firstly, we present an objective method of imperceptibility evaluation for gray image, which is based on both characteristics of steganography and human visual systems (HVS).Then, based on the color masking, metric CHPSNR for color image is proposed. CHPSNR relates embedding capacity to steganography, and can reflect the localized distortion of stego images. Extensive experimental results demonstrate that our method is superior to global PSNR, which is consistent with HVS and can effectively evaluate the performance of steganographic algorithm.