bitmap

bit·map

or bit map B5292400 (bĭt′măp′)n. Computers A set of bits that represents a graphic image, with each bit or group of bits corresponding to a pixel in the image.

bitmap

(ˈbɪtˌmæp) n (Computer Science) a picture created on a visual display unit where each pixel corresponds to one or more bits in memory, the number of bits per pixel determining the number of available coloursvb, -maps, -mapping or -mapped (Computer Science) (tr) to create a bitmap of

bit·map

(bĭt′măp′) Computer Science A set of bits that represents a graphic image, with each bit or group of bits corresponding to a pixel in the image.

Thesaurus

Noun

bitmap - an image represented as a two dimensional array of brightness values for pixelselectronic imageikon, picture, icon, image - a visual representation (of an object or scene or person or abstraction) produced on a surface; "they showed us the pictures of their wedding"; "a movie is a series of images projected so rapidly that the eye integrates them"

bitmap

Computing a picture created on a visual display unit where each pixel corresponds to one or more bits in memory, the number of bits per pixel determining the number of available colours

bitmap

(graphics, file format)A data file or structure whichcorresponds bit for bit with an image displayed on ascreen, probably in the same format as it would be stored inthe display's video memory or maybe as a device independent bitmap. A bitmap is characterised by the width and height ofthe image in pixels and the number of bits per pixel whichdetermines the number of shades of grey or colours it canrepresent. A bitmap representing a coloured image (a"pixmap") will usually have pixels with between one andeight bits for each of the red, green, and blue components,though other colour encodings are also used. The greencomponent sometimes has more bits that the other two to caterfor the human eye's greater discrimination in this component.

See also vector graphics, image formats.

bitmap

A binary representation in which a bit or set of bits corresponds to some part of an object such as an image or font. For example, in monochrome systems, one bit represents one pixel on screen. For gray scale or color, several bits in the bitmap represent one pixel. The term may refer to the image itself or to the memory area that holds the bits that represent the image. See pixel and rasterize.

Graphics and Tables
A bitmap is usually associated with graphics, in which the bits are a direct representation of the pixels in the image. However, bitmaps can be used as tables to represent and keep track of anything, where each set of bits is assigned a value or condition. See bitmapped graphics. For graphics fundamentals, see graphics.

A Monochrome Bitmap

The left half of this diagram shows the bits in the bitmap, and the right half depicts what would show on screen. In monochrome systems, one bit is used to represent one pixel. Images that are scanned into the computer are turned into bitmaps, and bitmaps can be created in a paint program.

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Synonyms for bitmap

noun an image represented as a two dimensional array of brightness values for pixels

Synonyms

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