Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1997-04-25
2000-08-29
Bayerl, Raymond J.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
345357, 345419, 345427, 345473, 345355, G06F 300, G06F 1300, G06T 1520
Patent
active
061115789
ABSTRACT:
A method, system, and computer program product provides data visualization which optimizes visualization of and navigation through hierarchies. A partial hierarchy is generated and displayed. The partial hierarchy consists of a number levels at least equal to a predetermined depth and less than a total number of levels included in a corresponding complete hierarchy. Parent nodes in the bottom level of the partial hierarchy have segments of connection lines extending toward child nodes not included in the partial hierarchy. A user is permitted to mark selected nodes or locations in a displayed partial hierarchy. Partial hierarchies are generated and stored in a cache or generated on-the-fly. Each partial hierarchy ends at a progressively deeper level. An interpolator interpolates a partial hierarchy layout by interpolating corresponding nodes in two partial hierarchies. A hierarchy manager manages partial hierarchies in response to requests from a viewer to move a camera to camera positions. Partial hierarchies are fetched from the cache or the interpolator. A display then displays display views of fetched partial hierarchies corresponding to the camera positions. During free-form navigation, a hierarchy manager determines and maintain an orientation based on at least one reference object. During zooming, an angular orientation is maintained through successive partial hierarchies. Mapping is also provided between a three-dimensional 3D partial hierarchy and a two-dimensional 2D overview of a complete hierarchy.
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Bayerl Raymond J.
Silicon Graphics Inc.
Thai Cuong T.
LandOfFree
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