Enhancing the perceived visual quality of a size invariant visual cryptography scheme

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

15 Scopus Citations
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Author(s)

  • Yang-Wai Chow
  • Willy Susilo
  • Duncan S. Wong

Related Research Unit(s)

Detail(s)

Original languageEnglish
Title of host publicationInformation and Communications Security
Subtitle of host publication14th International Conference, ICICS 2012, Proceedings
PublisherSpringer Verlag
Pages10-21
Volume7618 LNCS
ISBN (print)9783642341281
Publication statusPublished - 2012

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume7618 LNCS
ISSN (Print)0302-9743
ISSN (electronic)1611-3349

Conference

Title14th International Conference on Information and Communications Security, ICICS 2012
PlaceChina
CityHong Kong
Period29 - 31 October 2012

Abstract

Two of the main areas of research in visual cryptography have been on improving the visual quality of the recovered image and in reducing the pixel expansion of the shares. This paper addresses both of these visual cryptography issues. First, a method to enhance the perceived visual quality of the recovered image using various image filtering techniques is presented. In particular, these image filtering techniques are used to enhance the local and global contrasts of a grayscale image. Second, a multi-pixel block size invariant visual cryptography scheme that maintains the relative density of local neighboring pixels is proposed. This method encrypts blocks of pixels based on whether the total number of black pixels within the respective blocks is above or below a certain threshold. In conjunction, these approaches effectively improve on the perceived visual quality of a recovered visual cryptography image. © 2012 Springer-Verlag.

Research Area(s)

  • image filtering, multi-pixel encoding, size invariant, Visual cryptography, visual quality

Citation Format(s)

Enhancing the perceived visual quality of a size invariant visual cryptography scheme. / Chow, Yang-Wai; Susilo, Willy; Wong, Duncan S.
Information and Communications Security: 14th International Conference, ICICS 2012, Proceedings. Vol. 7618 LNCS Springer Verlag, 2012. p. 10-21 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 7618 LNCS).

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review