Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Robot Calligraphy using Pseudospectral Optimal Control in Conjunction
  with a Novel Dynamic Brush Model   Chinese calligraphy is a unique art form with great artistic value but
difficult to master. In this paper, we formulate the calligraphy writing
problem as a trajectory optimization problem, and propose an improved virtual
brush model for simulating the real writing process. Our approach is inspired
by pseudospectral optimal control in that we parameterize the actuator
trajectory for each stroke as a Chebyshev polynomial. The proposed dynamic
virtual brush model plays a key role in formulating the objective function to
be optimized. Our approach shows excellent performance in drawing aesthetically
pleasing characters, and does so much more efficiently than previous work,
opening up the possibility to achieve real-time closed-loop control.

4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin