Method by which a display space (such as a graphics image file) is defined, including the colour of each of its pixels (or bits). In effect, a bit-map is an array of binary data representing the values of pixels in an image or display. A GIF is an example of a graphics image file that has a bit-map. When the GIF is displayed on a computer monitor, the computer reads the bit-map to determine which colours to use to "paint" the screen. In a bit-mapped font, each character is defined as a pattern of dots in a bit-map
" From The Free On-line Dictionary of Computing (13 Mar 01) : bitmap A data file or structure which corresponds bit for bit with an image displayed on a screen, probably in the same format as it would be stored in the display's video memory or maybe as a device independent bitmap A bitmap is characterised by the width and height of the image in pixels and the number of bits per pixel which determines the number of shades of grey or colours it can represent A bitmap representing a coloured image (a "pixmap") will usually have pixels with between one and eight bits for each of the red, green, and blue components, though other colour encodings are also used The green component sometimes has more bits that the other two to cater for the human eye's greater discrimination in this component "
A bitmap is digital graphic that basically consists of a map of dots Bitmaps include GIF, JPEG and other file formats, which can be read by such programs as Adobe Photoshop Back to Top
A data file or structure which corresponds bit for bit with an image displayed on a screen, probably in the same format as it would be stored in the display's video memory or maybe as a device independent bitmap A bitmap is characterised by the width and height of the image in pixels and the number of bits per pixel which determines the number of shades of grey or colours it can represent A bitmap representing a coloured image (a "pixmap") will usually have pixels with between one and eight bits for each of the red, green, and blue components, though other colour encodings are also used The green component sometimes has more bits that the other two to cater for the human eye's greater discrimination in this component Source: Hyperdictionary
A bitmap is an array of dots If you imagine a sheet of graph paper with some squares colored in, a bitmap is a compact way of representing to the computer which squares are colored and which are not In a bitmapped font, every character is represented as a pattern of dots in a bitmap The dots are so small (300 or more dots-per-inch, usually) that they are indistinguishable on the printed page
A bitmap is an image file in which every pixel displayed on screen has a value which is held in memory There are many bitmap file formats including BMP, TIF, GIF, JPEG, PSD Vector images, on the other hand, store only descriptive information about an image
An image formed by a matrix of visible or invisible dots (bits) On a computer screen, the dots are formed by pixels Unlike vector objects or Bezier curves, bitmaps are resolution dependent See also raster image
A data file or structure which corresponds bit for bit with an image displayed on a computer display, usually in the same format as it would be stored in the display's video memory A bitmap is characterized by the width and height of the image it represents A bitmap may also represent a colored image, in which case more than one bit will be used to represent each pixel Computer graphics that treat images as collections of dots rather than as shapes, or objects, may be described as bitmapped graphics or raster graphics Contrast with vector graphics
A method of representing an image There are three perspectives to how a bitmap is described As a file, as it is printed and as it is displayed on a monitor In a file the bitmap is made from a matrix of rows and columns of dots Each dot may need many bits to define its colour, or greyscale The more bits that are used (depth) the greater the definition (resolution) of the image, which is expressed as dots per inch (dpi) when printed or rows and columns 640 x 480 or 1024 x 768 when displayed To a display a bitmap the image is converted into a rectangular grid of pixels (Picture X ELments) Each pixel is stored as a number, the number representing a colour value The operating system and video card convert these values into red, green and blue components so they can be displayed on a monitor
The display of an image, on a computer screen via the geometric mapping of a single layer of pixels on a rectangular grid In PhotoShop, Bitmap is also a one-channel mode consisting of only black and white pixels
A file or image structure representing, bit for bit, an image displayed on a monitor Bitmaps define the width and height of images and the parts of images Bitmaps may represent colored images; in this case, more than on bit is needed to define each pixel See BGR
Representation of characters or graphics by individual pixels arranged in rows (horizontal) and columns (vertical) Each pixel can be represented by either 1 bit (simple black and white) or up to 32 bits (high-definition color)
Lots of dots put together to make a picture Screens (and paper) are divided into thousands of little, tiny bits, each of which can be turned on or off These little bits are combined to create graphical representations GIF files are the most popular kind of bitmap files on the net
A bitmap is a simplistic representation of an image on a computer, simply indicating whether or not pixels are on or off, and sometimes indicating their color Often fonts are represented as bitmaps The term "pixmap" is sometimes used similarly; typically when a distinction is made, pixmap refers to color images and bitmap refers to monochrome images
A file format for digital images which treats the image as a two-dimensional array of pixels This approach is distinguished from the alternate approach of describing an image as a collection of primitive shapes - lines or objects
A bitmap is a type of graphics file on a computer. bitmap graphics for representing complex images such as photographs. Bitmap is also a verb. Bitmapped maps require huge storage space. a computer image that is stored or printed as an arrangement of bits
A digital image storage format used by digital cameras and some video display drivers As the name suggests, a bitmap identifies a digital word with a physical location
In bitmap graphics, an image is displayed on the screen as a collection of tiny squares called pixels, which together form a pattern Each pixel in the image corresponds with one or more bits; the number of bits per pixel determines how many shades of gray or colors can be displayed BMP A Windows format for a bitmapped graphics file Boolean In computer science and digital electronics, this term means an expression with two possible values, "true" and "false " The most common Boolean operators are AND, OR and NOT browser A program that allows users to read hypertext documents on the World Wide Web, and navigate between them Examples are Netscape Navigator*, Lynx*, and Microsoft Internet Explorer* Browsers can be text-based or graphic byte A byte is 8 bits; one byte can represent a single character On most computers, the byte is the basic unit of addressable memory On IBM Mainframes, a word is 4 bytes (32 bits)
A simple digital representation of an image as a 2-dimensional array of bits Strictly a bitmap is always monochrome, such that each pixel is represented by a single data bit The less common terms raster, bytemap and pixmap refer to shaded or coloured images, but "bitmap" is routinely used for these too On computer systems using *outline fonts, temporary bitmap characters are created on-the-fly by the *rasterizer, then stored in a *cache A bitmap font at a particular *ppem is called a *strike
A bitmap is an 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 or group of pixels The term may also refer to the memory area that holds the bitmap A bitmap is usually associated with graphics objects, in which the bits are a direct representation of the picture image However, bitmaps can be used to represent and keep track of anything, where each bit location is assigned a different value or condition (Added: 9/27/99)
An image format that only defines an image in terms of black and white A bitmapped image is generally used to define line art because its elements can only be black and white, unlike a grayscale image In general, a bitmapped image will require a higher resolution to render good quality line art (1000 dpi or higher) A bitmapped image is also known as a 1-bit image
A digitized image that is mapped into a grid of pixels These types of images cannot be enlarged or printed at higher resolutions without developing jagged edges (aliasing/pixelization)