A Novel Progressive Secret Image Sharing Scheme Based on Arithmetic Mean

The current researches in secret sharing techniques have limitations of lossy recovery for binary images, complex computation for grayscale images, and “All-or-Nothing”. In this paper, we propose a novel progressive secret image sharing (PSS) scheme based on arithmetic mean. In the proposed scheme, the more shares are collected, the better recovered visual quality will be. Furthermore, it can realize lossless recovery with all the shares. It can be directly used to share grayscale images and can be easily extended to deal with binary and color images. In the recovery process, it only needs simple computing (arithmetic mean). Simulations show the advantages and effectiveness of the proposed scheme.