Reducing shadow size in essential secret image sharing by conjunctive hierarchical approach

作者：

Highlights：

• An essential secret image sharing scheme is proposed by conjunctive hierarchical approach.

• The proposed essential secret image sharing scheme has better performance on shadow size.

• The essential shadows are more important than non-essential shadows.

• A more comprehensive evaluation method for shadow size is established.

摘要

•An essential secret image sharing scheme is proposed by conjunctive hierarchical approach.•The proposed essential secret image sharing scheme has better performance on shadow size.•The essential shadows are more important than non-essential shadows.•A more comprehensive evaluation method for shadow size is established.

论文关键词：Secret sharing,Secret image sharing,Essential secret image sharing,Shadow size

论文评审过程：Received 9 April 2014, Revised 23 September 2014, Accepted 16 November 2014, Available online 27 November 2014.

论文官网地址：https://doi.org/10.1016/j.image.2014.11.003