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X-ray computed tomography (CT) currently has widespread application in air travel security systems for the purpose of baggage screening. This work presents an implementation of a fully 3D model-based iterative reconstruction (MBIR) algorithm mapped to a multi-slice helical CT security scanner. We introduce innovations in the data model that are designed to enhance image quality for typical scenes...
A new watermarking-embedding scheme is proposed to improve the detector performance. The embedder employs the media to control both the fidelity (using a visual model) and the detectability (using a feedback of the watermark detector). Media-content dependent watermark modulation can effectively resist copy attack and removal attack. Experimental results show that the proposed scheme has a distinguished...
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