raster images - définition. Qu'est-ce que raster images
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Qu'est-ce (qui) est raster images - définition

DOT MATRIX DATA STRUCTURE, REPRESENTING A GENERALLY RECTANGULAR GRID OF PIXELS, OR POINTS OF COLOR, VIEWABLE VIA A MONITOR, PAPER, OR OTHER DISPLAY MEDIUM
Bit-mapped graphics; Bitmap graphics; Raster image; Raster format; Raster Graphics; Pixelmap; Bitmapped; Raster images; Bit-Mapped Graphics; Rastor; Bitmapped graphics; Bitmapped image; Raster graphic; Rasterized image; Video raster; Raster data; Bitmapped display; Raster drawing; Contones; Gridded data
  • reflection]] (almost free), either before or afterwards, amounts to a 90° image rotation in one direction or the other.
  • A simple raster graphic
  • Using a raster to summarize a point pattern.

bitmapped display         
Raster graphics         
smiley face] in the top left corner is a raster image. When enlarged, individual pixels appear as squares.
raster graphics         
<graphics> Computer graphics in which an image is composed of an array of pixels arranged in rows and columns. Opposite: vector graphics. (1995-03-22)

Wikipédia

Raster graphics

In computer graphics and digital photography, a raster graphic represents a two-dimensional picture as a rectangular matrix or grid of square pixels, viewable via a computer display, paper, or other display medium. A raster is technically characterized by the width and height of the image in pixels and by the number of bits per pixel. Raster images are stored in image files with varying dissemination, production, generation, and acquisition formats.

The printing and prepress industries know raster graphics as contones (from continuous tones). In contrast, line art is usually implemented as vector graphics in digital systems.

Many raster manipulations map directly onto the mathematical formalisms of linear algebra, where mathematical objects of matrix structure are of central concern.