Visual Cryptography Scheme (VCS) is a secret-sharing scheme which aims to encrypt a secret message into multiple shares and transmit them to participants over an untrusted communication channel. Although human vision can easily reveal the secret message by stacking a sufficient number of shares, this scheme reduces the visual quality of recovered images. This paper presents a novel high-quality and printer-friendly VCS. When providing high-quality recovery, this scheme keeps the size of the shares the same as the secret image. Experimental results show that, compared with previous work, the proposed scheme significantly improves the performance of recovered images.

Visual Cryptography Scheme (VCS) 是一种秘密共享方案，旨在将秘密消息加密为多个共享，并通过不受信任的通信通道将它们传输给参与者。尽管人类视觉可以通过堆叠足够数量的共享轻松揭示秘密信息，但该方案降低了恢复图像的视觉质量。本文介绍了一种新颖的高质量和打印机友好的 VCS。在提供高质量恢复时，该方案保持共享大小与秘密图像相同。实验结果表明，与之前的工作相比，所提出的方案显着提高了恢复图像的性能。