- 期刊
An Efficient Lossless Dual Images Secret Sharing Scheme Using Turtle Shell Reference Matrix
摘要
This work proposes a novel reversible (2, 2) secret sharing scheme based on turtle shells (TS) with dual images. According to the characteristic of the TS reference matrix in a 3×3 block, each pixel in the cover image can be used to conceal an octal digit by shifting it to the appropriate location, then two shadows with high quality are generated in the end. After the location conflict problem is solved, the hidden secret data can be extracted without any error as long as both shadows are gathered, and the cover image can be restored losslessly through the pixel orientational relationship located at two shadows. The experimental results demonstrate that the proposed scheme can achieve higher embedding capacity and maintain good image quality than some existing methods. In addition, the proposed scheme is effective against statistic attacks on pixel-value difference histograms (PDH).