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    ASIA unversity > 資訊學院 > 資訊傳播學系 > 期刊論文 >  Item 310904400/4414

    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/4414

    Title: Data hiding in binary images with distortion-minimizing capabilities by optimal block pattern coding and dynamic programming techniques
    Authors: I. S. Lee;W. H. Tsai
    Contributors: Department of Information Communication
    Keywords: data hiding;binary image;block pattern encoding;dynamic programming;image distortion minimization
    Date: 2007-08
    Issue Date: 2009-11-25 10:31:16 (UTC+8)
    Publisher: Asia University
    Abstract: A new method for data hiding in binary images based on block pattern coding and dynamic programming with distortion-minimizing capabilities is proposed. Up to three message data bits can be embedded into each 2�2 block in an input image by changing the block's pixel pattern into another, which represents the value of the message data bits as a code according to a block pattern encoding table. And extraction of hidden message data is accomplished by block pattern decoding. To minimize the resulting image distortion, two optimization techniques are proposed. The first is to use multiple block pattern encoding tables, from which an optimal one is selected specifically for each input image, and the second is to use a dynamic programming algorithm to divide the message data into bit segments for optimal embedding in a sense of minimizing the number of binary bit dippings. Accordingly, not only more data bits can be embedded in an image block on the average, but the resulting image distortion is also reduced in an optimal way. Experimental results are also included to show the effectiveness of the proposed approach.
    Relation: IEICE Transactions on Information and Systems E90-D (8): 1142-1150
    Appears in Collections:[資訊傳播學系] 期刊論文

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