![]() ![]() Many raster manipulations map directly onto the mathematical formalisms of linear algebra, where mathematical objects of matrix structure are of central concern. Transposing an image to covert raster organization (a relatively costly operation for packed formats with less than a byte per pixel) composing an additional raster line reflection (almost free), either before or afterwards, amounts to a 90° image rotation in one direction or the other. ![]() In contrast, line art is usually implemented as vector graphics in digital systems. The printing and prepress industries know raster graphics as contones (from continuous tones). Raster images are stored in image files with varying dissemination, production, generation, and acquisition formats. A raster is technically characterized by the width and height of the image in pixels and by the number of bits per pixel. In computer graphics and digital photography, a raster graphics represents a two-dimensional picture as a rectangular matrix or grid of square pixels, viewable via a computer display, paper, or other display medium. Enlarging further, each pixel can be analyzed, with their colors constructed through combination of the values for red, green and blue. When enlarged, individual pixels appear as squares. The smiley face in the top left corner is a raster image. JSTOR ( November 2016) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |