Frederik W. Jansen

Learn More
Mobile augmented reality requires accurate alignment of virtual information with objects visible in the real world. We describe a system for mobile communications to be developed to meet these strict alignment criteria using a combination of computer vision, inertial tracking and low-latency rendering techniques. A prototype low-power and low-latency(More)
Ray tracing is a powerful technique to generate realistic images of 3D scenes. However, the rendering of complex scenes may easily exceed the processing and memory capabilities of a single workstation. Distributed processing offers a solution if the algorithm can be parallelised in an efficient way. In this paper a hybrid scheduling approach is presented(More)
With the continuous improvement in ray tracing and radiosity algorithms, image synthesis quality has reached the level of photo realism. However, efforts to achieve real-time performances by implementing ray tracing and radiosity algorithms on parallel processors and dedicated hardware have not been very successful so far. Increasing the number of(More)
A mathematical model is presented for comparing geometric and image-based simplification methods. Geometric simplification reduces the number of polygons in the virtual object and image-based simplification replaces the object with an image. Our model integrates and extrapolates existing accuracy estimates, enabling the comparison of different(More)
A selection of these reports is available in PostScript form at the Faculty's anonymous ftp-Abstract A product modelling approach is presented that supports the assembly planning task with feature models. Mating and connection relations between components of an assembly can be specified by adding connection features to a product model with a(More)