Part of #ImageWatermarking Based on Reference SharingMechanism for Tamper Detection and Recovery with Special Care about ROI Recovery# :
Publishing year : 2013
Conference : 21st Iranian Conference on Electrical Engineering
Number of pages : 6
Abstract: This paper proposes a watermarking scheme based on a reference sharing mechanism in a spatial domain. Unlike conventional watermarking algorithms, the watermark is a reference derived from the original principal content in different regions and shared by these regions forcontent recovery. After identifying tampered blocks, both the reference data and the original content in the reserved area are used to recover the main content in the manipulated areas. In the proposed algorithm, the image is divided into two parts: the important part that is called the region of interest (ROI) and the important part that is called the non-interest region (RONI). If the image is tampered, after identifying tampered blocks, if the tampering rate is low, the whole image is recovered; otherwise, at least the ROI can be recovered accurately.