In computer graphics and digital photography, a raster graphic, raster image, or simply raster is a digital image made up of a rectangular grid of tiny colored (usually square) so-called pixels.

In its simplest form, a raster consists of a matrix of cells (or pixels) organized into rows and columns (or a grid) where each cell contains a value representing information, such as temperature.

The meaning of RASTER is a scan pattern (as of the electron beam in a cathode-ray tube) in which an area is scanned from side to side in lines from top to bottom; also : a pattern of closely spaced rows …

Nov 6, 2025 · A raster graphic is made up of a collection of tiny, uniformly sized pixels, which are arranged in a two-dimensional grid made up of columns and rows. Each pixel contains one or more …

Jul 23, 2025 · Raster graphics are images made up of tiny dots called pixels. Each pixel has a specific color, and when you put all these pixels together, they form a complete picture.

Raster files are images built from pixels — tiny color squares that, in great quantity, can form highly detailed images such as photographs. The more pixels an image has, the higher quality it will be, …

Sep 7, 2025 · A raster image is an image file format that's defined by a pixel with one or more numbers associated with it. The number defines the location, size, or color of the pixels.

Nov 20, 2025 · raster [data architecture, geography] A fundamental data structure consisting of a matrix of equally sized cells, or pixels, arranged in rows and columns, and composed of single or multiple …

What is raster data? Raster data is an image, or a grid of pixels, where each pixel has a unique value that represents a data point on the ground – in other words, it stores information about features in a …

Oct 30, 2025 · A raster image is an image file defined as a grid of pixels. They're also referred to as bitmaps. Common raster image formats on the Web are JPEG, PNG, GIF, and ICO.