Title
Dynamic Graffiti Stylisation with Stochastic Optimal Control.
Abstract
We present a method for the interactive generation of stylised letters, curves and motion paths that are similar to the ones that can be observed in art forms such as graffiti and calligraphy. We define various stylisations of a letter form over a common geometrical structure, which is given by the spatial layout of a sparse sequence of targets. Different stylisations are then generated by optimising the trajectories of a dynamical system that tracks the target sequence. The evolution of the dynamical system is computed with a stochastic formulation of optimal control, in which each target is defined probabilistically as a multivariate Gaussian. The covariance of each Gaussian explicitly defines the variability as well as the curvilinear evolution of trajectory segments. Given this probabilistic formulation, the optimisation procedure results in a trajectory distribution rather than a single path. It is then possible to stochastically sample from the distribution an infinite number of dynamically and aesthetically consistent trajectories which mimic the variability that is typically observed in human drawing or writing. We further demonstrate how this system can be used together with a simple user interface in order to explore different stylisations of interactively or procedurally defined letters.
Year
DOI
Venue
2017
10.1145/3077981.3078044
MOCO
Keywords
DocType
Citations 
Human hand-writing movement modeling, procedural calligraphy, graffiti and tags generation, model predictive control, stochastic optimal control, smoothing splines, iconic and kinemic letter forms
Conference
1
PageRank 
References 
Authors
0.35
5
3
Name
Order
Citations
PageRank
Daniel Berio141.75
Sylvain Calinon21897117.63
Frederic Fol Leymarie34710.18