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 Title: |
US6128000:
Full-scene antialiasing using improved supersampling techniques
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Jouppi, Norman P.; Palo Alto, CA
McCormack, Joel J.; Boulder, CO
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| Assignee: |
Compaq Computer Corporation, Houston, TX
other patents from COMPAQ COMPUTER CORPORATION, INC. (755619) (approx. 2,058)
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| Published / Filed: |
2000-10-03
/ 1997-10-15
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| Application Number: |
US1997000958129
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| IPC Code: |
Advanced:
G06T 11/00;
G06T 11/40;
G06T 15/10;
Core:
more...
IPC-7:
G09G 5/36;
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| ECLA Code: |
G06T11/00C; G06T11/40; G06T15/10;
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| U.S. Class: |
Current:
345/614;
345/589;
Original:
345/136;
345/152;
345/431;
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| Field of Search: |
345/150,152,147-149,136-138,431,432,433
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| Priority Number: |
| 1997-10-15 |
US1997000958129 |
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| Abstract: |
A method and an apparatus reduces aliasing artifacts in images defined by pixels. A pixel is partitioned into subpixel locations from which sample points are selected. A fragment of the image is determined to be visible at at least one of the sample points. A fragment value associated with that fragment is stored. Each sample point at which the fragment is visible is linked to the stored fragment value. A color of the pixel is computed from the stored fragment values to reduce the aliasing artifacts in the image.
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| Attorney, Agent or Firm: |
Fenwick & West, LLP ;
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| Primary / Asst. Examiners: |
Chang, Kent;
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
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| Family: |
Show 6 known family members
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First Claim:
Show all 15 claims |
What is claimed is:
1. A computerized method for rendering an image defined by pixels, the pixels having an allocated memory, the method comprising the steps of:
- selecting subpixel positions in a pixel as sample points;
- storing a fragment value associated with a fragment of the image, the fragment covering at least one of the sample points;
- linking each covered sample point to the stored fragment value to enable the generation of a color of the pixel using the fragment value;
- processing a new fragment having a new fragment value, the new fragment being visible at one or more of the sample points of the pixel; and
- replacing the stored fragment value with the new fragment value.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 48 U.S. patent(s) that reference this one
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| Foreign References: |
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| Other Abstract Info: |
DERABS G1999-339422
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| Other References: |
Akeley, K., "RealityEngine Graphics," Computer Graphics Proceedings, Annual Conference Series, 1993.
Carpenter, L., "The A-buffer, an Antialiased Hidden Surface Method," Computer Graphics, vol. 18, No. 3, Jul. 1984.
Torborg et al., "Talisman: Commodity Realtime 3D Graphics for the PC," Computer Graphics Proceedings, Annual Conference Series, 1996.
Winner et al., "Hardware Accelerated Rendering Of Antialiasing Using A Modified A-buffer Algorithm," Computer Graphics Proceedings, Annual Conference Series, 1997.
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