point sampling


Also found in: Medical.

point sampling

Also called "nearest neighbor," it is the simplest form of texture mapping, which is often associated with low-end games and applications that do not demand much realism. An algorithm is used to map a screen pixel to the corresponding point on the texture map. The attributes (color, alpha, etc.) of the nearest texel are then directly applied to the screen pixel. The process is repeated for each pixel forming the object being textured. See texture map, bilinear interpolation, trilinear interpolation and MIP mapping.
References in periodicals archive ?
Instantaneous point sampling and continuous sampling were used to record penguin behavior including proximity to visitor viewing area, surface swimming, diving, vigilance, visibility, resting and intra-group aggression during a total of 3 hours on each of the 10 study days.
Because Sato's method based on point sampling is sensitive to the number of sampling points and their positions, this method sometimes failed to provide a correct estimate of illumination distribution.
These imaging sensors allow the system to reach an unmatched profile sampling rate of 64 kHz with a point sampling rate of 12.
These devices are vital tools in reducing operating costs, as they allow oil samples to be analysed quickly and simply on-site, either via a dedicated in-line sensor or a single point sampling device.
In general, point sampling is not possible, and even very small samples have a volume.
The conventional point sampling campaigns do not give either the spatial or temporal view of water quality needed for accurate assessment and management of water bodies.
Transect walk-and-count and point sampling techniques were used to record satyrinae, morphinae and riodinidae butterflies plus one species of danaidae (Idea stolli).
In each of the countries except Pakistan, the sample was nationwide with a 4 percentage point sampling error.
Thus, the Nyquist-Landau density has a significance beyond that associated with point sampling.
The simplest binary downsampling method, called point sampling, which consists in taking the first pixel of each B(x,y), is equivalent to applying a reference downsampling operator with a constant reference image.
1997) Fox Point sampling site in Lake Michigan during two sampling events.
The point sampling methods differed in the degree of detail used in measuring tree and plot variables.