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Information Hiding and Extracting in Printed Chinese Documents by Missing Feature Method

In this paper, we proposed a new method for hiding and extracting information in printed chinese documents. This new method embeds information into chinese documents by varying the typefaces of chinese words. In addition, an information extracting method based on missing feature concepts is proposed to handle the partial occlusion, generated by printing and scanning operations. The new improved approach has been evaluated on numerous printed documents and demonstrated improved performance over other systems.