Processing Hexagonal Images in a Virtual Environment

Authors:
Sonya Coleman;Bryan Scotney;Bryan Gardiner
Affiliations:
School of Computing and Intelligent Systems, University of Ulster, Magee, Northern Ireland BT48 7JL;School of Computing and Information Engineering, University of Ulster, Coleraine, Northern Ireland BT52 1SA;School of Computing and Intelligent Systems, University of Ulster, Magee, Northern Ireland BT48 7JL
Venue:
ICIAP '09 Proceedings of the 15th International Conference on Image Analysis and Processing
Year:
2009

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Abstract

For many years the concept of using hexagonal pixels for image capture has been investigated, and several advantages of such an approach have been highlighted. Recently there has been a renewed interest in the use of hexagonal images, representation of architectures for such images and general hexagonal image processing. Therefore, we present multiscale hexagonal gradient operators, developed within the finite element framework, for use directly on hexagonal pixel-based images. We demonstrate these operators using two environments: a virtual hexagonal environment and the direct use of simulated hexagonal pixel-based images. In both scenarios, we evaluate the proposed operators and compare them with the use of standard image processing operators on typical square pixel-based images, demonstrating improved results in the case of simulated hexagonal pixel-based images.