A study of block-based medical image watermarking using a perceptual similarity metric

Birgit M. Planitz, Anthony J. Maeder

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

Medical image watermarking has been proposed as an appropriate method for enhancing data security, content verification and numerical image fidelity. Due to the sensitive nature of the data, medical image watermarking requires that any additional information that is stored within an image must not affect the perceptual integrity of the image. In typical approaches, additional information is generally hidden in the entire image, or in the background regions of an image (so as not to affect the medical data). This paper presents a novel model whereby medical image regions are watermarked differently so that perceptual degradation due to watermarking is limited. The model partitions images into regions and characterises each region according to some feature(s). Each region is then watermarked with a particular watermark method and payload capacity such that perceptual degradation is limited. This paper presents the model in conceptual form and then uses one instance of it to demonstrate how it would be used in practise. Results on MR and CT images demonstrate that less visually sensitive areas on images can be watermarked using more robust techniques and more sensitive areas can be watermarked using lighter or no embedding.

Original languageEnglish
Title of host publicationProceedings of the Digital Imaging Computing
Subtitle of host publicationTechniques and Applications, DICTA 2005
Pages483-490
Number of pages8
DOIs
Publication statusPublished - 1 Dec 2005
Externally publishedYes
EventDigital Imaging Computing: Techniques and Applications, DICTA 2005 - Cairns, Australia
Duration: 6 Dec 20058 Dec 2005

Publication series

NameProceedings of the Digital Imaging Computing: Techniques and Applications, DICTA 2005
Volume2005

Conference

ConferenceDigital Imaging Computing: Techniques and Applications, DICTA 2005
CountryAustralia
CityCairns
Period6/12/058/12/05

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