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...

Adaptive optics (AO) systems take sampled measurements of the wave-front phase. Because in the general case the spatial-frequency content of the phase aberration is not band limited, aliasing will occur. This aliasing will cause increased residual error and increased scattered light in the point-spread function (PSF). The spatially filtered wave-front sensor (SFWFS) mitigates this phenomenon by...

This paper evaluates the role of various stages in the human visual system in the detection of spatial patterns. Contrast sensitivity measurements were made for interference fringe stimuli in three directions in color space with a psychophysical technique that avoided blurring by the eye's optics including chromatic aberration. These measurements were compared with the performance of an ideal o...

Registry versus clinical trial The main goal of pregnancy registries includes the rapid identification of signals of increased teratogenic risk as quickly as possible, which is especially important for newly available anti epileptic drugs (AEDs) [1–3]. When the association between an increased risk and an AED is found in a registry, the cause can be further explored in a case–control study or a...