TY - JOUR
T1 - Character Modelling with Sketches and ODE-Based Shape Creation
AU - Li , Ouwen
AU - Fu , Haibin
AU - Bian , Shaojun
AU - Yang , Xiaosong
AU - Jin , Xiaogang
AU - Iglesias , Andres
AU - Noreika , Algirdas
AU - You , Lihua
AU - Zhang , Jian Jun
JO - Numerical Mathematics: Theory, Methods and Applications
VL - 3
SP - 720
EP - 751
PY - 2023
DA - 2023/08
SN - 16
DO - http://doi.org/10.4208/nmtma.OA-2022-0172
UR - https://global-sci.org/intro/article_detail/nmtma/21964.html
KW - Sketch-based character modelling, shape generators, ordinary differential equations, finite difference solution.
AB - <p style="text-align: justify;">Character models have enormous applications in industry. Efficient creation of detailed character models is an important topic. This paper proposes a new
and easy-to-use technique to quickly create detailed character models from sketches.
The proposed technique consists of two main components: primitive deformer and
shape generators. With this technique, 2D silhouette contours of a character model
are drawn or extracted from an image or sketch. Then, proper geometric primitives
are selected and aligned with the corresponding 2D silhouette contours. After that,
a primitive deformer is used to create a base mesh and three shape generators are
used to add 3D details to the base mesh. The primitive deformer and three shape
generators are developed from ODE-driven deformations. The primitive deformer
deforms the aligned geometric primitives to exactly match the 2D silhouette contours in one view plane and obtains a base mesh of a character model consisting of
deformed primitives. The shape generators are used to add 3D details to the base
mesh by creating local 3D models. The experimental results demonstrate that the
new technique can quickly create detailed 3D character models from sketches with
few manual operations. The new technique is physics-based and easy to learn and
use.</p>