Title :
High capacity reversible data hiding based on histogram shifting for medical images
Author :
Kumar, C. Vimal ; Natarajan, Vivek ; Bhogadi, Deepika
Author_Institution :
Dept. of Electron. & Commun. Eng, SSN Coll. of Eng., Chennai, India
Abstract :
This paper presents a modified histogram shifting algorithm for reversible medical image watermarking to increase the hiding capacity. It is based on hierarchically dividing a cover image into smaller blocks for data embedding using the histogram shifting technique. To yield an optimal data hiding result, a technique for recursive looking-ahead estimation of the maximum data hiding volume at the lowest level of the block-division tree structure is used. The block divisions are performed and optimal division is selected based on the hiding capacity. A modified block division scheme is chosen for the medical images having large dark areas. In this method high data hiding capacity and high stego-image quality are achieved.
Keywords :
data encapsulation; image watermarking; medical image processing; recursive estimation; block-division tree structure level; data embedding; data hiding capacity; data hiding volume; histogram shifting algorithm; histogram shifting technique; recursive looking-ahead estimation; reversible medical image watermarking; stego-image quality; Data mining; Histograms; Image restoration; Medical diagnostic imaging; PSNR; Watermarking; Medical image; block division; histogram shifting; reversible data hiding;
Conference_Titel :
Communications and Signal Processing (ICCSP), 2013 International Conference on
Conference_Location :
Melmaruvathur
Print_ISBN :
978-1-4673-4865-2
DOI :
10.1109/iccsp.2013.6577152