A hierarchical threshold secret image sharing

作者：Guo Cheng; Chang Chin Chen^*; Qin Chuan

来源：Pattern Recognition Letters, 2012, 33(1): 83-91.

DOI：10.1016/j.patrec.2011.09.030

• Hierarchical threshold
• Distortion-free
• Secret image sharing
• Access structure

In the traditional secret image sharing schemes, the shadow images are generated by embedding the secret data into the cover image such that a sufficient number of shadow images can cooperate to reconstruct the secret image. In the process of reconstruction, each shadow image plays an equivalent role. However, a general threshold access structure could have other useful properties for the application. In this paper, we consider the problem of secret shadow images with a hierarchical threshold structure, employing Tassa%26apos;s hierarchical secret sharing to propose a hierarchical threshold secret image sharing scheme. In our scheme, the shadow images are partitioned into several levels, and the threshold access structure is determined by a sequence of threshold requirements. If and only if the shadow images involved satisfy the threshold requirements, the secret image can be reconstructed without distortion.

• 出版日期2012-1-1
• 单位清华大学; 中国医科大学