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A real-time three-dimensional graphics display


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Sale, AHJ and Bromley, A 1975 , 'A real-time three-dimensional graphics display' , Australian Computer Journal, vol. 7, no. 1 , pp. 15-20 .

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The visible surface problem for three dimensional objects is examined from a global point of view in which planar surfaces derived from convex three-dimensional objects are regarded as the natural display elements. By retaining global information on surface and object relationships it is possible to considerably simplify the resolution of visible surfaces for a large class of realistic objects. Implementation of this approach suggests a display in which surfaces written to the display device can overlay and obscure previous picture information in the manner of an oil painting. A display system is proposed in which this is implemented by a large buffer memory which holds a complete point-by-point description of the picture in low-cost MOS shift-registers. By combining new data to be entered in the memory in a variety of ways with the data already present, it is possible to considerably enhance the display�������¢����������������s capabilities. The buffer memory also allows an easy match of the display system to conventional (TV) video equipment.

Item Type: Article
Authors/Creators:Sale, AHJ and Bromley, A
Keywords: real-time display, real-time graphics, three-dimensional graphics, visible surface problem, picture processing, picture buffer memory, display buffer, MOS memory, TV display, TV video
Journal or Publication Title: Australian Computer Journal
Publisher: Australian Computer Society Inc
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