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Priority-Based Stippling and its Stylization Applications

Priority-Based Stippling and its Stylization Applications

Hua Li, David Mould
Copyright: © 2017 |Volume: 8 |Issue: 2 |Pages: 23
ISSN: 1947-3117|EISSN: 1947-3125|EISBN13: 9781522513940|DOI: 10.4018/IJCICG.2017070104
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MLA

Li, Hua, and David Mould. "Priority-Based Stippling and its Stylization Applications." IJCICG vol.8, no.2 2017: pp.31-53. http://doi.org/10.4018/IJCICG.2017070104

APA

Li, H. & Mould, D. (2017). Priority-Based Stippling and its Stylization Applications. International Journal of Creative Interfaces and Computer Graphics (IJCICG), 8(2), 31-53. http://doi.org/10.4018/IJCICG.2017070104

Chicago

Li, Hua, and David Mould. "Priority-Based Stippling and its Stylization Applications," International Journal of Creative Interfaces and Computer Graphics (IJCICG) 8, no.2: 31-53. http://doi.org/10.4018/IJCICG.2017070104

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Abstract

This article presents a new and efficient automatic method for structure-preserving stippling. The core idea is to concentrate on structure preservation by using a priority-based scheme that treats extremal pixels first and preferentially assigns positive error to lighter pixels and negative error to darker pixels, emphasizing contrast. The use of a nonlinear spatial function to shrink or exaggerate errors implicitly provides global adjustment of density. Personal adjustment respects contrast and hence allows people to preserve structure even with few stipples. Beyond the advantage of good structure preservation, the algorithm provides many variations to extend personal stippling to other artistic styles. In addition, it is demonstrated that variations on priority-based schemes, by a multiple-stage process, can provide flexibility to promote different kinds of interesting features. This article explores a variety of stylized effects, including heightening, scratchboard, and line drawing, all within the unifying framework of stippling.

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