基于CRT的无损高效门限彩色图像秘密共享信息隐藏算法

目前对秘密图像共享的研究主要集中在灰度图像上,而日常生活中使用的图像大多是彩色的,因此,研究彩色图像的秘密共享具有重要的意义和应用价值.该方案将基于中国剩余定理(CRT)的秘密共享与DCT信息隐藏技术进行结合,保障了传输彩色秘密图像的安全性.在生成端,利用DCT信息隐藏算法将彩色秘密图像通过CRT生成的彩色秘密影子图像...

Lossless and Efficient Threshold Color Image Secret Sharing and Information Hiding Algorithm Based on CRT

At present, the research on secret image sharing mainly focuses on gray-scale images. However, most used in daily life are color images. Therefore, it is of great significance and application value to study the secret sharing of color images. The scheme combines the secret sharing based on the Chinese remainder theorem (CRT) with DCT information hiding technology to ensure the security of color secret image transmission. At the generation end, the color secret shadow image generated by CRT is embedded into the color carrier image of users and distributed by DCT information hiding algorithm. The shadow image is extracted at the recovery end, and the color secret image is recovered by CRT. The process satisfies the (t, n) threshold. The experimental results show that the algorithm can achieve lossless recovery, and the evaluation with relevant parameters reveals that the scheme outperforms other ones.