Sgraffito Meets Posterization
Stephen M Campbell and Vincent J. Matsko

Proceedings of Bridges 2020: Mathematics, Art, Music, Architecture, Education, Culture
Pages 215–222
Regular Papers

Abstract

Sgraffito is a technique for decoration where a surface is scratched away to reveal another underneath. This ancient technique can be extended by applying multiple layers of paint on fiberboard and using a variety of tools to scratch through the layers, resulting in richly textured pieces. Aspects of the sgraffito technique may be modeled digitally. In particular, images may be digitally processed using a small color palette to simulate the small palette used when applying the sgraffito technique using pigments. Post-processing involves smoothing out the digital images, since isolated pixels in a digital image are details too fine to be obtained using handheld tools.

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