Title: Sharing More Information in Visual Cryptography Scheme with Block Expansion
Abstract: Visual cryptography scheme (VCS) shares secret image into shadows. Without computing, stacking shadows can reveal the secret image. In this paper, we propose a VCS with block expansion. Each shadow pixel is expanded into a 4-pixel block with extra secret information embedded in. In the revealing process, the secret image can be revealed by stacking shadows. In the meanwhile, we can reveal the extra shared secret information by computation.
Publication Year: 2019
Publication Date: 2019-04-17
Language: en
Type: book-chapter
Indexed In: ['crossref']
Access and Citation
Cited By Count: 1
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