Abstract
Applying non-photorealistic rendering techniques to stylise portraits needs to be done with care, as facial artifacts are particularly disagreeable. This paper describes a technique for watercolour rendering that uses a facial model to preserve distinctive facial characteristics and reduce unpleasing distortions of the face, while maintaining abstraction and stylisation of the overall image, employing stylistic elements of watercolour such as edge darkening, wobbling, glazing and diffusion.
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Notes
- 1.
For example, wet in wet is a watercolour technique in which paint is specifically applied to wet paper.
- 2.
Computing edges from \(A_H\) after it is resized to the original \(I_O\) size gives similar results, but the edges are still slightly thickened, and the additional more detailed mid-scale edges retained by the preferred method improve the watercolour effect.
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Rosin, P.L., Lai, YK. (2018). Watercolour Rendering of Portraits. In: Satoh, S. (eds) Image and Video Technology. PSIVT 2017. Lecture Notes in Computer Science(), vol 10799. Springer, Cham. https://doi.org/10.1007/978-3-319-92753-4_22
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