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    题名: Secret image sharing with steganography and authentication using dynamic programming strategy
    作者: 詹啟祥;Chan, Chi-Shiang
    贡献者: 資訊多媒體應用學系
    关键词: Image sharing, (t, n) threshold scheme, hash function, dynamic programming strategy
    日期: 2010
    上传时间: 2012-11-26 15:10:05 (UTC+8)
    摘要: In this paper, a method is proposed to protect a secret image by applying (t, n) threshold scheme. The proposed method first divides the pixels in a four-pixel block into two groups. The first group contains the pixels whose one bit is used to embed authentication data, and the second group consists of the other pixels. One bit of each pixel in the second group is modified to reduce the degradation causing from embedding the sharing information. For the pixels in the first group, the authentication value is transformed into another value, and the transformed value is embedded into pixels to alleviate the degradation. The transforming relations are found by applying dynamic programming strategy. According to the experimental results, stego images with good quality and high authentication capability can be obtained by using our proposed method.
    關聯: Proceedings - 2010 1st International Conference on Pervasive Computing, Signal Processing and Applications
    显示于类别:[行動商務與多媒體應用學系] 期刊論文


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