The use virtual environments in training applications has the potential to provide rich training experiences to students, but it is difficult to design and manage such training sessions in real time due to the number of parameters to pay attention to: timing of events, difficulty, user’s actions and their consequences or eventualities are some examples. Narrative driven scenario managers confro...

In this paper we consider how information may be obtained from images. To search large image collections we need to search on secondary parameters. We may look for images containing certain types of objects, for images where the objects are of a certain size or shape, or for images having certain features. Since we now have techniques to rapidly acquire and store many images, we need techniques...

Using the 3-dimensional structure tensor, dense displacement vector fields (DVF) can be computed with subpixel accuracy. The approach is based on the detection of linear symmetries and the corresponding orientation angle within a local spatio–temporal neighborhood. The proposed technique is well suited to be applied within a multiresolution framework in order to avoid corresponence problem erro...

Event-driven programming divides a program’s logical control flow into a series of callback functions, making its behavior difficult to follow. However, current program analysis techniques can preserve the event model while making event-driven code easier to read, write, debug and maintain. We designed the Explicit Event Library (libeel) to be amenable to program analysis, and created tools to ...