For depth of field rasterization, it is often desired to have an efficient tile versus triangle test, which can conservatively compute which samples on the lens that need to execute the sample-in-triangle test. We present a novel test for this, which is optimal in the sense that the region on the lens cannot be further reduced. Our test is based on removing half-space regions of the (u,v)-space...

Resampling methods for irregularly sampled data are examined. A distinction is made between simple and complex methods. Simple methods such as Sample&Hold (S&H) and Nearest Neighbor Resampling (NNR) use only one irregular sample for one resampled observation. The advantage of simple methods is that they are robust and do not introduce a bias in the variance. A theoretical analysis as well as si...

Wave field synthesis (WFS) and higher-order Ambisonics (HOA) are two sound reproduction techniques that facilitate a high number of reproduction channels to overcome the sweet-spot limitation known from conventional stereophonic reproduction techniques. HOA is based on a representation of the reproduced wave field in terms of spatial harmonics, WFS is based on the KirchhoffHelmholtz integral. I...

A fundamental problem in stereo-processing is determining which images in the two eyes correspond to the same object. This problem is particularly pronounced with periodic stimuli where it is theoretically possible to binocularly match a given feature in one eye with any of the identical features in the other eye. One way to minimise the likelihood of the occurrence of such aliasing is to restr...

Volumetric cloudscapes are prohibitively expensive to render in real time without extensive optimisations. Previous approaches render the clouds to an offscreen buffer at one quarter resolution and update a fraction of the pixels per frame, drawing the remaining pixels by temporal reprojection. We present an alternative approach, reducing the number of raymarching steps and adding a randomly ji...

We describe an interprocedural shape analysis that makes use of spatial locality (i.e. the fact that most procedures modify only a small subset of the heap) in its representation of abstract states. Instead of tracking reachability information directly and aliasing information indirectly, our representation tracks reachability indirectly and aliasing directly. Computing the effect of procedure ...

In many volume segmentation and visualization tasks, the ability to correctly identify the boundary surface of each volumetric feature of interest in the data is desirable. This surface can be used in subsequent quantitative study of the segmented features. In this paper, we present an automatic approach to generate accurate representations of a feature of interest from volume segmentation. Our...