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A GIF is an example of a graphics image file that uses a bitmap. [2] As a noun, the term "bitmap" is very often used to refer to a particular bitmapping application: the pix-map, which refers to a map of pixels, where each pixel may store more than two colors, thus using more than one bit per pixel. In such a case, the domain in question is the ...
80 × 43 or 80 × 50, with an 8 × 8 font grid, with an effective resolution of 640 × 344 or 640 × 400 pixels. As with the pixel-based graphics modes, additional text modes are possible by programming the VGA correctly, with an overall maximum of about 100 × 80 cells and an active area spanning about 88 × 64 cells.
To define colors used by the bitmap image data (Pixel array) Mandatory for color depths ≤ 8 bits Gap1 Yes Variable size Structure alignment An artifact of the File offset to Pixel array in the Bitmap file header Pixel array No Variable size To define the actual values of the pixels The pixel format is defined by the DIB header or Extra bit masks.
A digital image is an image composed of picture elements, also known as pixels, each with finite, discrete quantities of numeric representation for its intensity or gray level that is an output from its two-dimensional functions fed as input by its spatial coordinates denoted with x, y on the x-axis and y-axis, respectively. [1]
This example shows an image with a portion greatly enlarged so that individual pixels, rendered as small squares, can easily be seen. In digital imaging, a pixel (abbreviated px), pel, [1] or picture element [2] is the smallest addressable element in a raster image, or the smallest addressable element in a dot matrix display device.
The Extended Graphics Array (XGA) or originally Extended Video Graphics Array (Extended-VGA, EVGA) [119] is an IBM display standard introduced in 1990. Later it became the most common appellation of the 1024 × 768 [ 1 ] [ 75 ] [ 103 ] [ 84 ] pixels display resolution.
Raster graphics is the representation of images as an array of pixels and is typically used for the representation of photographic images. [23] Vector graphics consists of encoding information about shapes and colors that comprise the image, which can allow for more flexibility in rendering.
The fundamental strategy underlying the raster data model is the tessellation of a plane, into a two-dimensional array of squares, each called a cell or pixel (from "picture element"). In digital photography , the plane is the visual field as projected onto the image sensor ; in computer art , the plane is a virtual canvas; in geographic ...