Weighted visual secret sharing for general access structures based on random grids

Zuquan Liu, Guopu Zhu, Feng Ding, Sam Kwong

Abstract: Highlights•A weighted visual secret sharing scheme with no pixel expansion is proposed.•The proposed scheme has both OR decryption and XOR decryption methods.•The proposed scheme is suitable for general access structures.•All shares can recover a lossless secret image.