Dr Jiacheng Tan
Senior lecturer
Department of Computer Science and Software Engineering
Telephone: (00)
44-23-92846386
E-mail: jiacheng.tan@port.ac.uk
Research
Interests
My
research interest are in the interdisciplinary areas of computer vision
and computer graphics. In particular, I am interested in developing and
applying the theories and techniques of computer vision and image understanding
to extract geometric or semantic descriptions of spatial structures of scenes and
relationships between objects from single/multiple images, or video sequences,
and using such descriptions to support a range of applications, such as robotic
navigation and manipulation control, image-based graphical modelling,
enhancement of human-computer/machine interactions, and visual data management.
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Scene understanding and image-based modelling, |
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Visual data (image/video) annotation and retrieval. |
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Internet-based control and teleoperation of robotic devices and other distributed systems. |
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Intelligent virtual figure animation and behaviour control. |
Research Experiences
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Advanced
Knowledge Technologies (AKT) Project (Knowledge Media Institute, |
The AKT project has been an EPSRC (Engineering and Physical Science
Research Council) founded project aiming at extending and integrating a range of
technologies to provide integrated methods and services for the capture,
modelling, publishing, reuse and management of knowledge. My role in the projects had
been using the techniques of visualisation, imaging, and networking to
organise, process, and retrieve the high dimensional information/knowledge. My
contributions had been:
1.
Developing the interface
for the AKT portal;
2.
Developing Quiver, a tool that facilitates dynamic
queries, Starfield displays and ontology-driven knowledge based
3.
Annotating,
modelling, and retrieval of semantic information from image and other non-text
information sources.
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Alice
Project (Knowledge Media
Institute, |
The
1.
2. client -server structure
and communication.
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Virtual Environments in Internet-Based Robot Teleoperation
(Department
of Computer and Information Sciences, De |
The research has concerned with the problem
of modelling of dynamic environment within a distributed framework for the visualisation
and control of Internet-based robots to improve the operation efficiency and
suppress the system latency introduced by the time-varying delays of Internet
communication. The work has been theoretical but with extensive technical
implementations (Java, C and 3D
graphics APIs). Varieties of theories
and techniques had been used, such as computer graphics, imaging and vision, AI
and networking. My contributions had been:
1. Development of the system
architecture that supports online modelling and the synchronising virtual
environment with physical counterpart;
2. A single-image-based method for on-line virtual environment
composing and editing;
3. Methods for path
planning and collision detection of the a 6-DOF (degree-of-freedoms)
manipulator in virtual environments;
4. Implementing the interface
for system control, task management, and remote operation.
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Analysis and
Simulation of Powered Biped Orthoses for Rehabilitation (Department of Electrical
and Electronic Engineering, |
This
research was conducted under the joint award of the State Education Commission of China and the British Council. The project investigated the problems associated
with the application of powered orthoses for the rehabilitation of those who
suffer lower limb injury, which involves theoretical formulation and
experimental implementation. My contributions had been:
1.
mathematical modelling and dynamics of
the biped system;
2.
models of gait generation and motion
synchronisation;
3.
balance control and system simulation.
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Numerical Analysis on the Electromagnetic Fields and
Dynamics of Congregated EMM Actuating Systems (Department of
Electro-Mechanical Engineering, |
Founded by the National Natural Science Foundation of
China, the project studied the dynamics of electric-magneto-mechanical
(EMM) actuators under pulse excitations. The research work involved intensive theoretical
and computational analyses and experimental evaluation. My contributions had
been:
1. Electromagnetic and thermal
fields of the EMM systems (finite element analysis);
2. Magnetic leakage analysis;
3. Magnetic, thermal and
mechanical interactions and dynamics analysis;
4. Failure-mode prediction and
parameter optimisation.
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J. Tan, G. Clapworthy, and I. Belousov,
The Integration of a Virtual Environment and 3D Modelling Tools in a
Networked Robot System, Int. Journal of Image and Graphics, vol. 6(1),
pp 65-85, January 2006. |
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J. Tan,
G.J. Clapworthy, Virtual Environments for Internet-Based Robots—I: Modelling a
Dynamic Environment (Invited
paper), Proceedings of the IEEE, vol. 91, no. 3, pp 383-388, March 2003. PDF |
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J.
Tan, G.J. Clapworthy, Virtual
Environments for Internet-Based Robots—II: Path Planning (Invited paper), Proceedings
of the IEEE, vol. 91, no. 3, pp
389-395, March 2003. |
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J.
Domingue, A. Stutt, M. Martins, J. Tan, H. Petursson, and E. Motta,
Supporting Online Shopping through a Combination of Ontologies and Interface
Metaphors, Int. J. of Human-Computer Studies, vol.
59, pp699 – 723, November
2003 |
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J. Tan, S. Xie, Heat
Generation and Temperature Field of Dot Matrix Print Head, Journal of Mathematical and Computer
Modelling, vol.24 (9): 79-89, Elsevier Science, NOV 1996. |
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J. Tan, S. Xie, Distribution and Interaction of the Magnetic Field
in Magnetic Actuating Mechanisms, Chinese Journal
of Computers, No.11, 1996 (In Chinese). |
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J. Tan, S. Xie, Magnetic Field of
Electromagnet Groups of Printing Mechanisms, Journal of Xidian University, No.2, 1996 (In Chinese). |
Book Chapters
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J. Tan, G.J. Clapworthy,
Parameter Acquisition of Geometric Primitives within Virtual Environments for
Internet-Based Telerobotics, in P. Hall, P. Willis (ed.) Vision, Video,
and Graphics (ISBN 3-905673-54-1), pp 89-96, Eurographics, 2003 |
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J. Domingue, M. Martins, J. Tan, A. Stutt, and H. Petursson, |
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G.J. Clapworthy,
I.R. Belousov, A. Savenko, W Sun, J.
Tan, S.L. Van-Sint-Jan, Medical Visualisation, Biomechanics, Figure
Animation and Robot Teleoperation: Themes and Links, in Confluence of Computer Vision and Computer Graphics, NATO Science
Series, Vol. 84, pp.215-228, Kluwer Academic Publishers, 2000. |
Conference Papers
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J .Tan, G. Clapworthy, I. Belousov, A Virtual environment and Modeling tools
for Control of Networked Robot Manipulator, Proceedings of Virtual Reality
and Application in Industry (VRAI’2003), October 2003. |
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M.C.
Carvalho, J. Tan, J. Domingue, H.
Petursson, Linking Dynamic Query Interface to Knowledge Models, International Conference on Intelligent
User Interfaces (IUI’02), San Francisco, California, USA, January 13-16,
2002. |
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J. Tan, G.J. Clapworthy, I.R.
Belousov, Single Image-Based On-line Camera Calibration and VE Modeling
Method for Teleoperation via Internet, Visual Data Exploration and Analysis, Proceedings of SPIE, Vol. 4302,
pp.1-12, 2001. |
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J. Tan, G.J. Clapworthy, Internet-Based Teleoperation Using VE
Modelling Based on Single Images, IEEE
Information Visualization’2000, IEEE Computer Society Press, pp.485-490,
London, July 2000. |
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I.R. Belousov, J. Tan, G.J. Clapworthy, Teleoperation and Java3D Visualization of a Robot Manipulator over the World Wide Web, IEEE Information Visualization’99, IEEE Computer Society Press, pp.543-548, London, July 1999. |
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J. Tan, I.R. Belousov, G.J. Clapworthy, A Virtual Environment
Based User Interface for Teleoperation of a Robot Using the Internet. Proceedings of the UKVRSIG'99,
pp.145-154, |
Presentations
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J.
Tan, Vision, Video and Robotics, at Vision,
Video and Graphics, |
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J. Tan, Internet-Based Robotics: Problem & Solutions, Internal Talk, Knowledge Media Institute, Open University, September 2001. |
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J. Tan, Camera Calibration
and VE Modeling Method for Teleoperation via Internet, at SPIE Electronic
Imaging, San Jose, California, USA, 22-23 January, 2001. |
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J. Tan, Internet-Based Teleoperation Using VE Modelling Based on
Single Images, at IEEE Information
Visualization, |
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J. Tan, A Virtual Environment Based User Interface for Teleoperation of a Robot Using the Internet, at Conf. of UKVRSIG'99, Salford, UK, 14-16 September 1999. |