Image transformation processing
Patent 4951040 Issued on August 21, 1990. Estimated Expiration Date: 
February 24, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 24, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesVideo picture processing apparatus and method Spatial transformation system including key signal generator Video signal processing Interactive system and related method for displaying data to produce a three-dimensional image of an object Patent #: 4809065 InventorsAssigneeApplicationNo. 159780 filed on 02/24/1988US Classes:345/427, Space transformation715/856CursorExaminersPrimary: Brier, JefferyAttorney, Agent or FirmInternational ClassG09G 001/00Foreign Application Priority Data1987-03-17 GBAbstractA flat picture is spatially transformed by moving selected reference points one-by-one and "pinning" them at new positions. The system comprises a source of picture video signals, (1, 2) representing picture points at respective addresses in a first picture projected on a viewing screen, addressing means (159) for providing address signals representing the addresses of at least four reference points defining corners of a polygon notionally projected on said screen, and operator-controlled means (14) for producing selective adjustment of said address signals to cause said reference points to define the corners of said polygon as projected on said screen after a movement of said polygon in 3D space. A transforming circuit 7 responds to said address signals after the selective adjustment by transforming the addresses of said picture video signals so as to cause the picture video signals to represent the picture as projected on said screen after undergoing the same movement in 3D space as said polygon.Other References
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