Medical image integrity control and forensics based on watermarking -- Approximating local modifications and identifying global image alterations - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès IEEE EMBS 2011: 33th Annual International Conference of the Engineering in Medicine and Biology Society Année : 2011

Medical image integrity control and forensics based on watermarking -- Approximating local modifications and identifying global image alterations

Résumé

In this paper we present a medical image integrity verification system that not only allows detecting and approximating malevolent local image alterations (e.g. removal or addition of findings) but is also capable to identify the nature of global image processing applied to the image (e.g. lossy compression, filtering ...). For that purpose, we propose an image signature derived from the geometric moments of pixel blocks. Such a signature is computed over regions of interest of the image and then watermarked in regions of non interest. Image integrity analysis is conducted by comparing embedded and recomputed signatures. If any, local modifications are approximated through the determination of the parameters of the nearest generalized 2D Gaussian. Image moments are taken as image features and serve as inputs to one classifier we learned to discriminate the type of global image processing. Experimental results with both local and global modifications illustrate the overall performances of our approach.
Fichier non déposé

Dates et versions

hal-00739608 , version 1 (08-10-2012)

Identifiants

Citer

Hui Huang, Gouenou Coatrieux, Huazhong Shu, Limin Luo, Christian Roux. Medical image integrity control and forensics based on watermarking -- Approximating local modifications and identifying global image alterations. IEEE EMBS 2011: 33th Annual International Conference of the Engineering in Medicine and Biology Society, Aug 2011, Boston, United States. pp.8062-8065, ⟨10.1109/IEMBS.2011.6091988⟩. ⟨hal-00739608⟩
32 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More