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    Title: A verifiable and recoverable secret image sharing mechanism
    Authors: 詹啟祥;Chan, Chi-Shiang
    Contributors: 資訊多媒體應用學系
    Keywords: secret sharing, camouflage, verifiable, reversible, magic matrix
    Date: 2011
    Issue Date: 2012-11-26 15:10:10 (UTC+8)
    Abstract: Verifiability is essential for a secret sharing approach which allows the involved participants to detect cheaters during the secret retrieval process. In this article, we propose a verifiable secret image sharing scheme that can not only resist dishonest participants but can also satisfy the requirements of loss less and camouflage. The new approach conceals the shadows into a pixel pair of the host image by adding or subtracting a pixel value by 1. Consequently, the embedding alteration can be reduced to preserve the fidelity of the shadow image. Recoverability is a practical essential for protecting the valuable host image from being distorted. After the authorized participants retrieve a loss less secret image, they can remove the shadows from the shadow images to recover the unmarked host image. The experimental results exhibit that the proposed scheme can share a large secret capacity according to the threshold t and retain superior quality of around 52 dB.
    Relation: Proceedings - International Symposium on Parallel and Distributed Processing with Applications, ISPA 2011
    Appears in Collections:[Department of Applied Informatics and Multimedia] Journal Article

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