bitmap

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Related to Bitmap image: Bitmap image format

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 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.

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.

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.
References in periodicals archive ?
e) When bitmap images are used to identify controls, status indicators, or other programmatic elements, the meaning assigned to those images shall he consistent throughout an application's performance.
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It also includes support for state scan lines and barcodes, signatures, logos, watermarks and bitmap images.
In addition, consumers can design their own embroidered products by using Zazzle's design tools to add text, upload their own stitch files or upload bitmap images which Zazzle will convert to stitch files.
Step-by- step instructions and b/w screenshots walk through the process of manipulating objects, using the drawing tools, adding fills and strokes, setting text styles, transforming bitmap images, and exporting the finished art.
Among the special features of Fireworks CS3 includes a common library of pre-built assets, quick vector artwork and bitmap images editing and seamless integration with Adobe Photoshop, Adobe Illustrator, Adobe Dreamweaver and Adobe Flash.
CorelDRAW Graphics Suite X3 includes CorelDRAW X3 for vector illustration and page layout, Corel PHOTO-PAINT X3 for image editing and the new Corel PowerTRACE, which converts low-quality bitmap images into vector graphics.
Unlike conversion utilities that grab only the text from your PDF files, PDF2Word/RTF preserves the layout of your document, as well as the bitmap images and text.
The use of graphics and illustrations would normally increase the visual quality of a book but for some reason the authors on this occasion have sometimes opted for low resolution (jaggy) bitmap images over vector graphics and even poor quality, mismatched clip art images.