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--- projects [2010/05/03 19:29] – bil
+++ projects [2010/08/24 15:46] (current) – bil
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-====== Estimating Registration Error ======
-**Supervisor**: Burton Ma
-**Required background**: General prerequisites
-**Recommended background**: N/A
-__Description__
-A fundamental step in computer-assisted surgery is registration where the anatomy of the patient is matched to an image or model of the anatomy. For some types of orthopaedic procedures, registration is performed by digitizing the locations of points on the surface of a bone and matching the point locations to the surface of a model of the bone. Here, a surgeon uses a pointer that is tracked using an optical tracking system to measure registration point locations on a patient. A registration algorithm is used to compute the transformation that best matches the points to a model of the anatomy.
-Virtual navigational information (such as where to drill or cut the bone) can be provided to the surgeon after the registration transformation has been established. Here, a surgeon is using a tracked surgical drill to drill a hole along a pre-operatively defined path. Notice that the surgeon looks at the virtual navigational information instead of the patient when performing this task.
-Computer-assisted surgical navigation depends on having an accurate registration. If the estimated registration is inaccurate then the navigational information will also be inaccurate, which may lead to errors in the surgical procedure. It is of great interest to know the accuracy of the estimated registration.
-Further details on the project can be found [[http://www.cse.yorku.ca/~burton/4080/4080.html|here]].
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 Many graphics programs implement snapping to facilitate drawing. Snapping ensures that end-points of lines meet, that the endpoint of one line correctly "touches" another, that objects align side-to-side, etc. One problem of simple snapping techniques is that one cannot position objects arbitrarily close together - otherwise the snapping technique interferes. A novel snapping technique "Snap-and-Go" circumvents this problem by slowing the cursor over the line, instead of snapping it close to the line. The objective of this project is to implement several snapping techniques for two-dimensional drawing systems and then to perform an evaluation with a small user study.
-====== Simulation of a 6dof virtual reality tracker ======
-**Supervisor**: Wolfgang Stuerzlinger
-**Required Background**:  General CSE4080 prerequisites
-**Recommended Background**: CSE3431 or equivalent
-__Description__
-Previous work by the supervisor resulted in a novel and highly accurate Virtual Reality tracking system that matches or exceeds the specifications of all competing systems. However, this system works only in 5 or 6-sided immersive display environment.
-This project is the first step towards an adaptation of the technology for more general environments. In particular we target normal rooms and immersive displays with less than 5 screens. The technical work involves adapting the simulation software for the previous device to simulate a new design, and iteratively optimizing that design based on the results obtained.
-====== Programming Multi-Core GPUs with CUDA ======
-**Supervisor**: Franck van Breugel
-**Required background**: General prerequisites
-**Recommended background**: N/A
-__Description__
-CUDA stands for "compute unified device architecture."  It is an architecture to program multicore graphical processing units (GPUs for short).  In the past, these GPUs were only used for graphics. However, CUDA allows us to use these GPUs for other types of computation. Since today's GPUs have hundreds of cores, algorithms can be parallelized and, hence, run often much faster.
-The aim of this project is to get familiar with GPUs and to study how to program them.
-More details can be found at: [[http://www.cse.yorku.ca/~franck/projects/cuda.html]]
-(this link is only accessible from machines within the domain yorku.ca.)