Computer graphics processing and selective visual display system – Computer graphic processing system – Integrated circuit
Patent
1997-10-29
2000-06-13
Chauhan, Ulka J.
Computer graphics processing and selective visual display system
Computer graphic processing system
Integrated circuit
345507, G06F 1206
Patent
active
060755458
ABSTRACT:
Methods and apparatus for storing, accessing, and processing information representing images through the use of row and column pointers are described. By manipulating and/or generating new sets of row and column pointers, many image processing operations can be performed without the need to access or copy the original image data. Padding, enlargement and reduction operations are examples of image processing operations that can be performed virtually. A logical image is created as the result of a virtual image processing operation. In order to permit the fast and efficient access of the image data which represents the logical image, the logical image is divided into safe and unsafe logical image regions. In a safe logical image region, data representing the image is regularly spaced in memory and may be accessed using a first relatively fast and efficient memory access technique. In unsafe logical image regions, the data representing the logical image is not regularly spaced in memory and is accessed using a second memory access technique that uses both the row and column pointers associated with the unsafe image region. The methods and apparatus of the present invention allow many image processing operations to be performed using less memory and/or by performing fewer computations than conventional image processing techniques.
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De Bonet Jeremy S.
Szeliski Richard
Chauhan Ulka J.
Michaelson Peter L.
Microsoft Corporation
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