Research Projects

Current projects

Cubical Marching Squares
Research on surface extraction from volume data.

Virtual Lives' Animation
Research on animation model related work.

Matting and compositing
Research on matting, compositing and object selection.

Domain Connected Graph: The Essential Skeleton of a 3D shape
A new representation for the skeleton of an arbitrary shape is proposed. The nodes of the graph are named domain points (significant points inside the shape) which can represent the local properties of a shape. The domain points are classified into three categories: joint points, end points and connection points.

A Tool for Alignment of Molecules
A novel tool is proposed to align two molecules (not just proteins) based on their 3D structural data, and the user can observe the result of alignment visually via the tool. Most existing tools are designed only for alignment of proteins. Here, a new tool is developed to address shared structural features between protein structures and tRNA structures, that is, molecular mimicry, although they are two very different types of molecules.

3D Model Retrieval
A 3D model retrieval system based on Multi-View LightField and Multi-resolution Reeb Graph

3D Protein Model Retrieval
A 3D Protein Model Retrieval System based on Multi-View LightField method.

Chinese Painting Rendering
An Interactive Haptic Chinese Painting System

Virtual Sculptor
A Feature Preserving Haptic Modeling System

Realistic 3D facial animation parameters
Accurate 3D facial motion trajectories are reconstructed from mirror-reflected multiview videos, and the estimated data are also applied to synthetic face for realistic facial animation.

RFAP

MPEG4 Synthetic/Natural Hybrid Coding
Our focus is on head/face motion tracking using three feature points, as well as efficient 3D modeling of individuallized face with textures. Currently we are working on "Virtual Talk" and Model-Based Video Conferencing System.

Video VR
An authoring system is proposed to construct panoramic images of real-world scenes from video clips automatically. Instead of using special hardware such as fish-eye lens

VR Talk
Web-enabled speech driven facial animation. In this project, a speech-driven talking head is developed as a plug-in for web browsers (plug-in for Navigator; ActiveX for IE). Since it is a model-based approach, the bitrate requirement of this lifelike animation is only 14Kbps.

Photo VR
A prism-like photo-realistic environment map rendering system.

Image Talk
synthetic faces can be used in virtual communication such as virtual meeting, virtual video e-mail etc.; the technique can also be a new friendly user interface in various applications

MPEG-4 Rendering
A rendering module for MPEG-4 system module.

Previous projects

The SpaceWalker building walkthrough system
As part of our graphics research into virtual worlds, and also stimulated by the construction of a new building for the Department of Computer Science and Information Engineering at National Taiwan University, our goal is to construct a walkthrough system, the SpaceWalker, that enables a user to explore the computer model of the department building. --Dr. Yuong-Wei Lei

Hair Rendering
Hair has some features that make it hard to be created by the computer. These features include a large number of hairs and complex physical properties of hair. In this work, we aim to develop a procedure to reproduce the beauty of hair. --Tzong-Jer Yang

JAVA VRML applet

JAVA VRML Applet
The VRML group works for the development of a VRML applet which is able to display VRML world in our Multimedia Shared Browser as well as in other commercial browsers. -- VRML group

TheJavaGL 3D Graphics Library for Java
JavaGL is a 3D graphics library for the Java^TM programming language with an API which is similar to that of OpenGL^TM. This 3D graphics library can help ones to develop 3D graphics applications on the Internet/Intranet, and is developed by pure Java^TM programming language. Now, JavaGL is available for download and some examples can be run online. --Robin Bing-Yu Chen

Medical Image Processing

Tread-mill: a VR device of walk-through system
3D Trackers
3D Sound
Motion Prediction
Gesture Recognition
Motion Chair: a haptical device
Force Feedback Joystick: a haptical device
A Shift-Resisting Public Watermark System for Protecting Image Processing Software
Time Shifting Resistant Digital Audio Watermarking Using Template Matching