Duration : 12 months
Contact :François Faure
Competences : completed Ph.D., experience in physically-based animation and real-time techniques
The design of real-time models for pedagogical surgical simulators is one of the most challenging applications of Computer Animation: it combines the need for efficient models ranging from rigid to visco-elastic bodies and to liquids with the necessity to embed them in a unified, real-time simulation framework enabling their interaction. The some of the required models are volumetric; others are membranes and strands-like objects, which may self-collide as well. Moreover, each of these models has to be able to change over time due to user interaction (such as separating, cutting, burning, stitching tissues), which modifies both their appearance and their mechanical behaviour. Lastly, the final aim to design a surgical simulator yields the need for two antagonist features: real-time and realism (which has to be understood in shape and deformations but also in visual appearance and in the force feedback user-interaction outputs).
This area of research has been a subject of intense interest during the past decade (the previous
work from our group is listed below), but most contributions only concentrated in modelling one of the desired behaviour and nobody has provided, yet, a real-time environment enabling interaction with a number of organs and tissues.
The aim of this project is to develop real-time physically-based models for surgery simulation, keeping in mind that these models of different nature should interact in real-time and should allow user interaction, namely separating, cutting, suturing and removing biological tissues. In particular, the search for real-time performances may require the use of LODs and multiresolution techniques, of graphics hardware acceleration, the combination of different collision detection and response strategies and the design of specific algorithms for cutting and modifying the different tissues.
The models will be used in the context is minimally invasive surgery and more precisely for an application to radical prostatectomy developed in the framework of the ODYSSEUS European project. In addition to work with researchers at EVASION (Francois Faure and Marie-Paule Cani), a strong collaboration will be held with the following partners:
The later provides us with video sequences of real surgery and reconstructed geometric models of individual organs. The engineers at EPIDAURE and ALCOVE will work on the integration of the research developed at EVASION within a common simulation platform for all the INRIA partners.
Validation through tests performed by surgeons will be held at IRCAD, enabling the demonstration of the practical usability of the solutions we develop.