Raster
Raster refers to a rectangular grid of picture elements (pixels) used to represent a digital image. Each pixel contains a value or set of values describing color and brightness, and the grid resolution determines the level of detail. Raster images are usually resolution dependent: increasing scale magnifies pixels, often revealing jagged edges or blurring.
In geographic information systems (GIS) and remote sensing, raster is a data model that stores information as
Rasterization is the process of converting vector graphics or 3D models into a raster image by determining
Rasters are contrasted with vector data, which represent images as geometric primitives such as points, lines,
Common raster formats and applications: raster graphics in digital photography and web images; satellite imagery and