Rasterpunkten

Rasterpunkten (literally "raster points") is a term used in digital imaging and related fields to describe the discrete points that form a raster—the grid of samples that constitutes digital images, scanned data, or rasterized representations. A raster is made of regularly spaced sample points, each carrying color or intensity information. The arrangement of these points defines the resolution of the image. In practice, rasterpunkten are the individual data units stored in a pixel matrix, typically indexed by row and column coordinates.

In image processing, operations such as sampling, resampling, filtering, and dithering act on rasterpunkten to produce new raster representations. The precision of a raster image depends on the density of points and the bit depth per point. When converting from vector to raster form, vector shapes are rasterized point by point on the grid.

In geographic information systems (GIS) and remote sensing, rasterpunkten are used as the fundamental units of raster data—cells or pixels that encode a variable (such as elevation or reflectance) at a fixed spatial resolution. The term can also appear in discussions of digital art to emphasize the aesthetic of visible grid structure or pixel-level rendering.

See also: Raster graphics, Pixel art, Dithering, Anti-aliasing, Spatial sampling.