04622545 is referenced by 167 patents and cites 7 patents.

Apparatus and methods are disclosed which are most advantageously used in conjunction with a digital computer to provide improved graphics capability. These techniques permit the representation and manipulation of any arbitrarily shaped image in terms of "inversion points". Inversion points defining a region are sorted and stored such that the region shape may be regenerated at a later time from the inversion points. Means are provided to compare existing regions and new regions to be displayed, and region operators are provided to specify a precedence between the existing and new regions. Thus, new regions are appropriately "clipped" such that only portions of a new region may actually be displayed to achieve the desired graphic representation.

Title
Method and apparatus for image compression and manipulation
Application Number
6/428635
Publication Number
4622545
Application Date
September 30, 1982
Publication Date
November 11, 1986
Inventor
William D Atkinson
Los Gatos
CA, US
Agent
Blakely Sokoloff Taylor & Zafman
Assignee
Apple Computer
CA, US
IPC
G09G 1/00
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