Structure Aware Visual Cryptography
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Date
2014
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association and John Wiley and Sons Ltd.
Abstract
Visual cryptography is an encryption technique that hides a secret image by distributing it between some shared images made up of seemingly random black-and-white pixels. Extended visual cryptography (EVC) goes further in that the shared images instead represent meaningful binary pictures. The original approach to EVC suffered from low contrast, so later papers considered how to improve the visual quality of the results by enhancing contrast of the shared images. This work further improves the appearance of the shared images by preserving edge structures within them using a framework of dithering followed by a detail recovery operation.We are also careful to suppress noise in smooth areas.
Description
@article{10.1111:cgf.12482,
journal = {Computer Graphics Forum},
title = {{Structure Aware Visual Cryptography}},
author = {Liu, Bin and Martin, Ralph R. and Huang, Ji-Wu and Hu, Shi-Min},
year = {2014},
publisher = {The Eurographics Association and John Wiley and Sons Ltd.},
ISSN = {1467-8659},
DOI = {10.1111/cgf.12482}
}