Back to basics: Towards novel computation and arrangement of spatial sensory in images
2016 (English)In: Acta Polytechnica, ISSN 1210-2709, Vol. 56, no 5, 409-416 p.Article in journal (Refereed) Published
The current camera has made a huge progress in the sensor resolution and the low-luminance performance. However, we are still far from having an optimal camera as powerful as our eye is. The study of the evolution process of our visual system indicates attention to two major issues: the form and the density of the sensor. High contrast and optimal sampling properties of our visual spatial arrangement are related directly to the densely hexagonal form. In this paper, we propose a novel software-based method to create images on a compact dense hexagonal grid, derived from a simulated square sensor array by a virtual increase of the fill factor and a half a pixel shifting. After that, the orbit functions are proposed for a hexagonal image processing. The results show it is possible to achieve image processing operations in the orbit domain and the generated hexagonal images are superior, in detection of curvature edges, to the square images. We believe that the orbit domain image processing has a great potential to be the standard processing for hexagonal images.
Place, publisher, year, edition, pages
2016. Vol. 56, no 5, 409-416 p.
Convolution, Fill factor, Hexagonal pixel, Hexagonal processing, Hexagonal sensor array, Orbit functions, Orbit transform, Square pixel
Other Computer and Information Science
IdentifiersURN: urn:nbn:se:bth-13798DOI: 10.14311/AP.2016.56.0409ScopusID: 2-s2.0-85008440583OAI: oai:DiVA.org:bth-13798DiVA: diva2:1067230
open access2017-01-202017-01-202017-01-23Bibliographically approved