RIS ID

130503

Publication Details

Sheppard, C. J. R. (2018). Pixellated circle. Applied Optics, 57 (27), 7878-7882.

Abstract

For applications in optical systems it is often necessary to represent a circular aperture in a pixellated form. An objective parameter is introduced that is a measure of how well an approximate circle can be generated from a small array of square pixels. Both filled circles (disks) and rings are considered. Arrays with a width given by an even number of pixels can also be used to generate quadrants of a circle. Rings with outer and inner profiles given by optimum circles or quadrants can be summed to fill a complete circle or quadrant.

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Link to publisher version (DOI)

http://dx.doi.org/10.1364/AO.57.007878