HIGH CAPACITY, REVERSIBLE DATA HIDING IN MEDICAL IMAGES

被引:15
作者
Fallahpour, M. [1 ]
Megias, D. [1 ]
Ghanbari, M. [2 ]
机构
[1] Univ Oberta Catalunya, Catalunya, Spain
[2] Univ Essex, Colchester, Essex, England
来源
2009 16TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOLS 1-6 | 2009年
关键词
data hiding; Image watermark; medical images;
D O I
10.1109/ICIP.2009.5413711
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
In this paper we introduce a highly efficient reversible data hiding technique. It is based on dividing the image into tiles and shifting the histograms of each image tile between its minimum and maximum frequency. Data are then inserted at the pixel level with the largest frequency to maximize data hiding capacity. It exploits the special properties of medical images, where the histogram of their non-overlapping image tiles mostly peak around some gray values and the rest of the spectrum is mainly empty. The zeros (or minima) and peaks (maxima) of the histograms of the image tiles are then relocated to embed the data. The grey values of some pixels are therefore modified. High capacity, high fidelity, reversibility and multiple data insertions are the key requirements of data hiding in medical images. We show how histograms of image tiles of medical images can be exploited to achieve these requirements. Compared with data hiding method in the whole image, our scheme can result in 30%-200% capacity improvement with still better image quality, depending on the medical image content.
引用
收藏
页码:4241 / +
页数:2
相关论文
共 9 条
[1]   Strict integrity control of biomedical images [J].
Coatrieux, G ;
Maître, H ;
Sankur, B .
SECURITY AND WATERMARKING OF MULTIMEDIA CONTENTS III, 2001, 4314 :229-240
[2]  
Coatrieux G., 2006, C P IEEE ENG MED BIO, P4691
[3]  
JAGADISH N, 2004, BIOMEDICAL ENG ONLIN, V3
[4]   Protecting patient privacy against unauthorized release of medical images in a group communication environment [J].
Li, MY ;
Poovendran, R ;
Narayanan, S .
COMPUTERIZED MEDICAL IMAGING AND GRAPHICS, 2005, 29 (05) :367-383
[5]  
MACQ B, 1999, DFG 8 DII WAT WORKSH
[6]   Reversible data hiding [J].
Ni, ZC ;
Shi, YQ ;
Ansari, N ;
Su, W .
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, 2006, 16 (03) :354-362
[7]   Robust watermarking and compression for medical images based on genetic algorithms [J].
Shih, FY ;
Wu, YT .
INFORMATION SCIENCES, 2005, 175 (03) :200-216
[8]  
Wakatani A., 2002, Proceedings of the 35th Annual Hawaii International Conference on System Sciences, P2043, DOI 10.1109/HICSS.2002.994129
[9]   Authenticity and integrity of digital mammography images [J].
Zhou, XQ ;
Huang, HK ;
Lou, SL .
IEEE TRANSACTIONS ON MEDICAL IMAGING, 2001, 20 (08) :784-791