La Jolla Cove

Zhipei Yan (颜智培)

Office :

ETB 2016

Work Address :

Department of Computer Science and Engineering

Texas A&M University

College Station, TX 77843

Email :

email address

I'm a forth-year Ph.D. student in Computer Science of Texas A&M University, advised by Dr. Scott Schaefer. Before that, I received my B.Sc. from the HUA Loo-Keng Talent Program in Mathematics (HUA Class), University of Science and Technology of China (USTC) in 2015, advised by Dr. Ligang Liu.

My research interests are Computer Graphics and related areas, including geometric modeling, geometric processing, CAGD, etc.



κ-Curves: Interpolation at Local Maximum Curvature

Yan Z., Schiller S., Wilensky G., Carr N., and Schaefer S.

ACM Transactions on Graphics (Proceedings of SIGGRAPH), Vol. 36, No. 4, (2017), pp. 129:1-129:7

[pdf] [slides] [code(TBA)]

We present a method for constructing almost-everywhere curvature-continuous, piecewise-quadratic curves that interpolate a list of control points and have local maxima of curvature only at the control points. Our premise is that salient features of the curve should occur only at control points to avoid the creation of features unintended by the artist. While many artists prefer to use interpolated control points, the creation of artifacts, such as loops and cusps, away from control points has limited the use of these types of curves. By enforcing the maximum curvature property, loops and cusps cannot be created unless the artist intends for them to be.

To create such curves, we focus on piecewise quadratic curves, which can have only one maximum curvature point. We provide a simple, iterative optimization that creates quadratic curves, one per interior control point, that meet with G2 continuity everywhere except at inflection points of the curve where the curves are G1. Despite the nonlinear nature of curvature, our curves only obtain local maxima of the absolute value of curvature only at interpolated control points.

Work Experience

Adobe Systems Inc., Research Intern, 2017.05-2017.08

Hefei Abaci Science & Technology Co. Ltd, R&D Intern, 2014.06-2014.08

TA courses

(Fall 2018) CSCE-222 Discrete Structures for Computing, Instructor: Dr. David Kebo Houngninou