SIGGRAPH ASIA Computer Animation Festival

The study of graphic communication techniques that engineers, architects, and designers use to express ideas and concepts, or the graphic expression applied to the design process, is becoming increasingly important. The correct interpretation of graphic language allows the development of skills in the training of an engineer or architect. For this reason, research on this topic is especially valuable in finding improvements or new proposals that help toward a better understanding of those techniques. This Special Issue shows the reader some examples of different disciplines available, such as engineering graphics, industrial design, geometric modeling, computer-aided design, descriptive geometry, architectural graphics and computer animation.

Download Full-text

Application Analysis of Computer Animation Technology in Micro-lecture

2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE) ◽

10.1109/icmcce51767.2020.00408 ◽

2020 ◽

Author(s):

Xueming Li

Keyword(s):

Computer Animation ◽

Application Analysis

Download Full-text

On the Effect of Control-Point Spacing on the Multisolution Phenomenon in the P3P Problem

Mathematical Problems in Engineering ◽

10.1155/2018/5932508 ◽

2018 ◽

Vol 2018 ◽

pp. 1-13

Author(s):

M. Vynnycky ◽

G. M. M. Reddy

Keyword(s):

Image Analysis ◽

Camera Calibration ◽

Pose Estimation ◽

Computer Animation ◽

Solution Structure ◽

Control Point ◽

Quartic Equation ◽

Real Solutions ◽

Algebraic Analysis ◽

And Robotics

The perspective 3-point (P3P) problem, also known as pose estimation, has its origins in camera calibration and is of importance in many fields: for example, computer animation, automation, image analysis, and robotics. One possibility is to formulate it mathematically in terms of finding the solution to a quartic equation. However, there is yet no quantitative knowledge as to how control-point spacing affects the solution structure—in particular, the multisolution phenomenon. Here, we consider this problem through an algebraic analysis of the quartic’s coefficients and its discriminant and find that there are significant variations in the likelihood of two or four solutions, depending on how the spacing is chosen. The analysis indicates that although it is never possible to remove the occurrence of the four-solution case completely, it could be possible to choose spacings that would maximize the occurrence of two real solutions. Moreover, control-point spacing is found to impact significantly on the reality conditions for the solution of the quartic equation.

Download Full-text

Simulation of human microDopplers using computer animation data

2008 IEEE Radar Conference ◽

10.1109/radar.2008.4720816 ◽

2008 ◽

Cited By ~ 11

Author(s):

Shobha Sundar Ram ◽

Hao Ling

Keyword(s):

Computer Animation

Download Full-text

Parameterization of Three-Dimensional Rigid Body Guidance Incorporating Planar Gear Connections in a Spatial Closed-Loop Mechanism With Parallel Consecutive Axes

Volume 2: 32nd Mechanisms and Robotics Conference, Parts A and B ◽

10.1115/detc2008-50109 ◽

2008 ◽

Author(s):

Javier Rolda´n Mckinley ◽

Carl Crane ◽

David B. Dooner

Keyword(s):

Computer Animation ◽

Closed Loop ◽

Three Dimensional ◽

Motion Generation ◽

Repetitive Motion ◽

End Effector ◽

Spatial Mechanism ◽

Joint Axis ◽

Position And Orientation ◽

Six Degree Of Freedom

This paper introduces a reconfigurable closed-loop spatial mechanism that can be applied to repetitive motion tasks. The concept is to incorporate five pairs of non-circular gears into a six degree-of–freedom closed-loop spatial chain. The gear pairs are designed based on given mechanism parameters and a user defined motion specification of a coupler link of the mechanism. It is shown in the paper that planar gear pairs can be used if the spatial closed-loop chain is comprised of six pairs of parallel joint axes, i.e. the first joint axis is parallel to the second, the third is parallel to the fourth, ..., and the eleventh is parallel to the twelfth. This paper presents the synthesis of the gear pairs that satisfy a specified three-dimensional position and orientation need. Numerical approximations were used in the synthesis the non-circular gear pairs by introducing an auxiliary monotonic parameter associated to each end-effector position to parameterize the motion needs. The findings are supported by a computer animation. No previous known literature incorporates planar non-circular gears to fulfill spatial motion generation needs.

Download Full-text