CAJ | 학술논문

为了优化区域递增式视觉密码的性能参数, 提出一种基于异或运算的区域递增式视觉密码方案. 首先设计自适应区域分配算法, 然后构造单秘密分享视觉密码的加密矩阵, 最后设计秘密图像的分享与恢复流程, 并给出一种实现方案. 实验结果表明, 该方案适用于通用存取结构, 能提供更加丰富的应用场景, 且像素不扩展, 可有效地减少共享份的存储和传输开销; 同时, 恢复图像不存在颜色反转失真, 白像素可以实现完全恢复, 提高了相对差, 能够显著地改善秘密图像的视觉效果.
위료우화구역체증식시각밀마적성능삼수, 제출일충기우이혹운산적구역체증식시각밀마방안. 수선설계자괄응구역분배산법, 연후구조단비밀분향시각밀마적가밀구진, 최후설계비밀도상적분향여회복류정, 병급출일충실현방안. 실험결과표명, 해방안괄용우통용존취결구, 능제공경가봉부적응용장경, 차상소불확전, 가유효지감소공향빈적존저화전수개소; 동시, 회복도상불존재안색반전실진, 백상소가이실현완전회복, 제고료상대차, 능구현저지개선비밀도상적시각효과.
In order to optimize the performance parameters of region incrementing visual cryptography. A novel XOR-based region incrementing visual cryptography scheme is proposed. At first, an adaptive region assignment algorithm is designed. Then, the encode matrices of single secret sharing visual cryptography are constructed. Furthermore, the procedures of secret image sharing and recovering are designed. Finally, a scheme is realized. Experimental results show that the proposed scheme is suitable for general access structure, and further enriches the application scenarios. Moreover, it has no pixel expansion, and the storage and transmission cost of shares can be decreased efficiently. Meanwhile, the reverse color distortion problem is solved, the white pixels of secret im-age can be recovered perfectly and the relative difference is also enhanced. Therefore, the visual performance of secret image can be improved effectively.