bef raster graphics format unified color technologies.

This property contrasts with the capabilities of vector graphics, which easily scale up to the quality of the device rendering them. They cannot scale up to an arbitrary resolution without loss of apparent quality. Raster graphics are resolution dependent. See also rastrum, a device for drawing musical staff lines. By association, it came also to refer to a rectangular grid of pixels. It originally referred to the raster scan of cathode ray tube (CRT) video monitors, which paints the image line by line by magnetically steering a focused electron beam.

The word 'raster' has its origins in the Latin rastrum (a rake), which is derived from radere (to scrape). The printing and prepress industries know raster graphics as contones (from 'continuous tones') and refer to vector graphics as 'line work'. A bitmap is technically characterized by the width and height of the image in pixels and by the number of bits per pixel (a color depth, which determines the number of colors it can represent). Raster images are stored in image files with varying formats (see comparison of graphics file formats).Ī bitmap corresponds bit-for-bit with an image displayed on a screen, generally in the same format used for storage in the display's video memory, or maybe as a device-independent bitmap. In computer graphics, a raster graphics image, or bitmap, is a dot matrix data structure representing a generally rectangular grid of pixels, or points of color, viewable via a monitor, paper, or other display medium.

Zooming in further, they can be analyzed, with their colors constructed by adding the values for red, green and blue.

When enlarged, individual pixels appear as squares. The smiley face in the top left corner is a bitmap image.

Bef raster graphics format unified color technologies.