一种具有理想对比度的可视密码方案

摘要

论文针对可视密码中像素扩展大、对比度低的特点，提出了一种具有理想对比度的可视密码方案，该方案基于完美的黑度可视密码方案（PBVCS），算法简单可行，易于操作，且实现了重构图像与原图像的一致性，没有像素扩展。%A perfect contrast visual cryptography scheme is proposed for the features of the large pixel-expansion and low contrast in VC .The scheme is based on both the perfect black visual cryptography scheme(PBVCS) ,keeping the consis-tency between the reconstructed image and the original image without pixel expansion .And this algorithm is simple and feasi-ble ,easy to operate .