Showing papers on "Perspective (geometry) published in 1975"
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5 citations
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5 citations
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31 Dec 1975TL;DR: A system is described for the generation of real time quasi three-dimensional animated television images using a composite of the "multi-plane" cartoon animation technique and three- dimensional object projection techniques using polygonal patch representations of objects.
Abstract: A system is described for the generation of real time quasi three-dimensional animated television images. The technique utilized is a composite of the "multi-plane" cartoon animation technique and three-dimensional object projection techniques using polygonal patch representations of objects. The hardware environment consists of a hierarchical memory structure utilizing shift register "background" planes and a fast random access main image "foreground" plane. The foreground plane has a variable "depth" with respect to the background planes. Perspective relations in the image structure are maintained in real time with only infrequent updating of the background data.
1 citations
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TL;DR: In this paper, the same practical examples as mentioned in the paper of Wood (1972) in this journal are worked out and their results are compared, and they treat of the spatial intersection method which does not need known poins, but can use any group of well-defined points in the image plane.
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TL;DR: In this paper, the use of six points in the model and the common perspective center is recommended since this gives a more rigid connection to the models than the using of only three model points.