Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
2007-10-09
2007-10-09
Tung, Kee M. (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S422000, C345S592000, C345S626000, C345S629000
Reexamination Certificate
active
10875333
ABSTRACT:
Disclosed is an imaging engine system (699) generally intended for the reproduction of graphical object images using apparatus having limited computing resources, such as so-called “thin clients”. Numerous developments of traditional image processing and rendering enable high quality image generation. One such development takes advantage of temporal coherence between one frame in an animation sequence and the succeeding frame. In particular, there will often be some edges (233, 235) of graphical objects that remain “static” across several contiguous frames. One example of this includes those edges used to draw image background detail. Another development performs antialiasing during scan line rendering of a graphic object image where sub-pixel resolution coverage bit-masks (A-buffers29-34) are generated for a limited number of scan lines at a time. Preferably the A-buffers are generated for only one pixel at a time. Another development relates to rendering a scan line of a graphic object image in a scan line renderer for a span of pixels lying between two x-order consecutive edges intersecting the scan line. For the span of pixels, this development maintains a subset of depths present in the rendering, the subset being those depths that are present on the span and being maintained in depth order (590) and subject to removal of depths where the corresponding depth is no longer active. In another development a compositing stack (6101-6107) of image layers to be rendered in a raster scan fashion is simplified. Rendering is operable over a run of two or more pixels within which a relationship between graphical objects contributing to the layers does not change. The layers are first divided into groups (6110, 6112, 6114), with each group being separated by a layer having variable transparency (6111, 6113). For a top one of the groups, layers having constant color in the run are reduced to a single equivalent color (6115, 6116, 6117) having an associated accumulated contribution. Many other developments are disclosed.
REFERENCES:
patent: 5115402 (1992-05-01), Matsushiro et al.
patent: 5483627 (1996-01-01), Silverbrook et al.
patent: 5990904 (1999-11-01), Griffin
patent: 6057855 (2000-05-01), Barkans
patent: 6115049 (2000-09-01), Winner et al.
patent: 6128000 (2000-10-01), Jouppi et al.
patent: 6362818 (2002-03-01), Gardiner et al.
patent: 6369828 (2002-04-01), Lewis
patent: 6369830 (2002-04-01), Brunner et al.
patent: 7106275 (2006-09-01), Brunner et al.
patent: 3-71377 (1991-03-01), None
patent: 6-68271 (1994-03-01), None
patent: 2002-208017 (2002-07-01), None
patent: 2003-30681 (2003-01-01), None
patent: WO 03/065310 (2003-08-01), None
M. D. Ercegovac et al., “Reciprocation Square Root, Inverse Square Root, and Some Elementary Functions Using Small Multipliers”, IEEE Transactions on Computers, vol. 49, No. 7, Jul. 2000, pp. 628-637.
L. Carpenter, “The A-buffer, an Antialiased Hidden Surface Method”, Computer Graphics, vol. 18, No. 3, Jul. 1984, pp. 103-108.
Thomas Porter et al., “Compositing Digital Images”, Computer Graphics, vol. 18, No. 3, Jul. 1984, pp. 253-259.
J. Foley et al., “Computer Graphics: Principles and Practice”; 2ndEdition, Addison-Wesley, 1997, pp. 81-87.
Scalable Vector Graphics (SVG)1.1 Specification, W3C Recommendation Jan. 14, 2003 (REC-SVG11-20030114), W3C® (MIT, ERCIM, Keio) http://www.w3. org/TR/2003/REC-SVG11-20030114/.
Bradley Scott
Ecob Stephen Edward
Lawther Michael Jan
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Nguyen Hau H
Tung Kee M.
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