HIGH-CAPACITY DATA HIDING IN HALFTONE IMAGES USING MINIMAL ERROR BIT SEARCHING (WP-P7)

Author(s) : Soo-Chang Pei (National Taiwan University, Taiwan) Jing-Ming Guo (National Taiwan University, Taiwan)

Abstract : In this paper, a high capacity data hiding is proposed for embedding a large amount of information into halftone images. The embedded watermark can be distributed into several error-diffused images by the proposed Minimal Error Bit Searching technique (MEBS). The method can be generalized to self-decoding mode with dot diffusion or color halftone images. From the experiments, the embedded capacity from 33% up to 50% and good quality result are achieved. Furthermore, the proposed MEBS method is also extended for robust watermarking to against the degradation from printing-and-scanning and several kinds of distortions.

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