Title: A realistic and real-time watercolour painting engine using domain decomposition scheme

Authors: Junkyu Oh; Yong-Ho Seo; Taesoo Kwon; Jinho Park

Addresses: Raysoft Co., 304 KyungNam-HonorsVille, Jijok-Dong, Yuseong-gu, Daejeon 305-325, Korea ' Mokwon University, Korea 88 Doanbuk-ro, Seo-gu, Daejeon 302-729, Korea ' Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Korea ' Soongsil University, 369 Sangdo-Ro, Dongjak-Gu, Seoul 156-743, Korea

Abstract: We present an efficient watercolour painting system, which can work interactively on low-powered computing machines, even mobile devices. A subdomain based lattice Boltzmann method (LBM) is applied to guarantee realism of the simulated watercolour painting output and to enhance the computational efficiency. Our system reflects essential features of watercolour painting such as diffusion, pigment mixing, and drying. We provide an improved colour model, which is adequate for handling subtractive pigment mixing. Results from experiments show that our system can perform interactively, and can even be utilised even for professional art work.

Keywords: painting systems; watercolour painting; fluid simulation; LBM; lattice Boltzmann method; non-photorealistic rendering; domain decomposition; diffusion; pigment mixing; drying; colour modelling; art.

DOI: 10.1504/IJSNET.2015.072877

International Journal of Sensor Networks, 2015 Vol.19 No.3/4, pp.234 - 241

Received: 26 Nov 2014
Accepted: 16 Feb 2015

Published online: 05 Nov 2015 *

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