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Catalogue : Details

Tao Wu

Authentication of Compressive Sensing based Image Content

ISBN:978-3-8440-6517-6
Series:Forschungsberichte des Instituts für Digitale Kommunikationssysteme
Herausgeber: Prof. Dr. Christoph Ruland
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Volume:39
Keywords:Compressive Sensing; Authentication; Imaging
Type of publication:Thesis
Language:English
Pages:152 pages
Figures:56 figures
Weight:224 g
Format:21 x 14,8 cm
Bindung:Paperback
Price:45,80 € / 57,30 SFr
Published:March 2019
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Abstract:Compressive Sensing (CS) has redefined the sampling method by choosing an appropriate sensing domain, limiting the characteristics of source information, and performing recovery with a nonlinear solver. CS-based Imaging (CSI) cameras can construct an N pixel image with only M measurements where M ≪ N, and the sampling bandwidth of sensors is not limited when the target image can be k-sparse or "compressible" represented. It is necessary for CS based images to be protected by an authentication mechanism that can provide the integrity and authenticity of the origin.

This dissertation proposes an authenticated CSI system that is based on the Compressive Sensing based Message Authentication Code (CSMAC) mechanism. This MAC method is embedded in the imaging process with a redundant secure matrix. Furthermore, the extraction mechanism may reduce the data size and support a restricted tolerance property. With the help of a pre-trained threshold the verifier can tolerate an appropriate amount of recovery noise and detect the content modifications.

This study finally proposes an authenticated encrypted CSI mechanism, in order to support authentication, encryption, compression and sensing in one step. Since CS based images denote a poor data compression performance, an improvement is suggested as a basis for the authenticated encrypted CSI mechanism is based. The simulated results illustrate that CSI is computationally secure for confidentiality, sensitive to the amount of content-based tampering, and has an approximately 20% lower bit-rate for an acceptable image resolution compared to the naive CSI method.