Research Fellow / Research Associate, School of Computer Engineering, Nanyang Technological University

Країна: Сингапур;

Дедлайн: 23.11.2011

Веб-сайт: www3.ntu.edu.sg

Address: School of Computer Engineering, Nanyang Technological University

 

This is a full-time job in the areas of virtual reality, shape modeling and haptic interaction. The position is funded from a 3-year Ministry of Education project entitled “Collaborative Haptic Modelling for Orthopaedic Surgery Training in Cyberspace”. The work will be carried out in Singapore at the School of Computer Engineering of Nanyang Technological University in Fraunhofer IDM@NTU research center.

Current orthopaedic surgery training methods are based on hundreds years old apprentice-master training model which involves surgery on real patients and expensive infrequent workshops conducted in unrealistic situations on artificial ‘sawbone’ and on increasingly difficult to procure cadavers. However the emphasis today is minimally invasive orthopaedic surgery which is done without actually seeing bones but with a remote viewing through image intensifiers (X-ray machines) and computerized guidance systems. Hence the training shifts towards learning with a computer how to plan and select implants to be inserted including complex stepwise task learning. However training on a stand-alone computer excludes interaction with the instructor and an ability to work on the cases in a group of trainees unless they all are physically present in the same place. The computer-based training methods can be very much improved and made more cost effective and affordable if 3D immersive collaborative haptic surgery simulation in cyberspace is used. Accordingly, to achieve this goal the candidate will work on one or a few of the following research directions:

  1. To further develop a pioneering approach for defining geometry, appearance and physical properties of body parts, implants and instruments using mathematical functions and function procedures. Being small in size, the function-based models are very efficient for model exchange in shared virtual environments. They also provide for an unlimited level of detail of the representation.
  2. To work on the alkgorithms replacing large polygon-based models with their function-based approximations defined by an innovative model based on partial differential equations. The resulting data files will be an order of magnitude smaller in size than the original data and will provide for interactive rendering of the objects.
  3. To work on a new method of reconstruction of 3D objects (bones or body parts) based on the sets of essential 3D curves that are then used for obtaining PDE solutions for the interpolating model. These masks can be fitted to just a few X-ray images to reconstruct the actual bone with a sufficient level of detail.
  4. To work on replacing 3D modeling of the body parts with image-driven haptic rendering where the actual photos and videos of the surgical field will be appended with the topologically similar geometry and force feedback information so that the user will have a better visual immersion while feeling that he/she is touching or working with the object displayed on the screen.
To apply:

Send your complete CV and expected salary via email to: Assoc Prof Alexei SOURIN, assourin{at}ntu.edu.sg

 

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