Random grid based color visual cryptography scheme for black and white secret images with general access structures

作者：

Highlights：

• The concept of random grid is extended to color image domain, and XOR operation for color pixels is defined.

• A scheme of RG-CBW-VCS for GAS is proposed based on the XOR operation for color pixels.

• The proposed RG-CBW-VCS for GAS is extended to realize generalized GAS (GGAS).

摘要

•The concept of random grid is extended to color image domain, and XOR operation for color pixels is defined.•A scheme of RG-CBW-VCS for GAS is proposed based on the XOR operation for color pixels.•The proposed RG-CBW-VCS for GAS is extended to realize generalized GAS (GGAS).

论文关键词：Visual cryptography,Random grid,General access structure,Color,Black and white,Pixel expansion

论文评审过程：Received 7 December 2018, Revised 27 March 2019, Accepted 27 March 2019, Available online 2 April 2019, Version of Record 9 April 2019.

论文官网地址：https://doi.org/10.1016/j.image.2019.03.017