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An improved tamper detection and localization scheme for volumetric DICOM images.
Dou, Wenbo; Poh, Chueh Loo; Guan, Yong Liang.
Afiliación
  • Dou W; School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore.
J Digit Imaging ; 25(6): 751-63, 2012 Dec.
Article en En | MEDLINE | ID: mdl-22832896
ABSTRACT
The development of teleradiology brings the convenience of global medical record access along with the concerns over the security of medical images transmitted over the open network. With the prevailing adoption of three-dimensional (3-D) imaging modalities, it is vital to develop a security mechanism to provide large volumes of medical images with privacy and reliability. This paper presents the development of a new and improved method of implementing tamper detection and localization based on a fully reversible digital watermarking scheme for the protection of volumetric DICOM images. This tamper detection and localization method utilizes the 3-D property of volumetric data to achieve much faster processing time at both sender and receiver sides without compromising tamper localization accuracy. The performance of the proposed scheme was evaluated by using sample volumetric DICOM images. Results show that the scheme achieved on average about 65 % and 72 % reduction in watermarking and dewatermarking processing time, respectively. For cases where the images had been tampered, it is possible to detect and localize the tampered areas with improved localization resolution in the images using the scheme.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Diagnóstico por Imagen / Sistemas de Información Radiológica / Seguridad Computacional / Telerradiología Tipo de estudio: Diagnostic_studies Límite: Humans Idioma: En Revista: J Digit Imaging Asunto de la revista: DIAGNOSTICO POR IMAGEM / INFORMATICA MEDICA / RADIOLOGIA Año: 2012 Tipo del documento: Article País de afiliación: Singapur

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Diagnóstico por Imagen / Sistemas de Información Radiológica / Seguridad Computacional / Telerradiología Tipo de estudio: Diagnostic_studies Límite: Humans Idioma: En Revista: J Digit Imaging Asunto de la revista: DIAGNOSTICO POR IMAGEM / INFORMATICA MEDICA / RADIOLOGIA Año: 2012 Tipo del documento: Article País de afiliación: Singapur