OBJECT SEARCH METHOD AND OBJECT SEARCH SYSTEM
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United States of America Patent
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Issued Date -
Aug 16, 2001
app pub date -
Apr 27, 1998
filing date -
Apr 27, 1998
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Abandoned
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Abstract
An object search method and an object search system which reduce the time needed for coordinate transformation of a plurality of objects to be displayed as three-dimensional view data through viewing transformation. The system determines a reference box which circumscribes a view volume, created according to an eyepoint. The system determines a bounding box for each object. Each bounding box circumscribes the corresponding object. A 6-d tree, composed of a plurality of nodes each having keys composed of the coordinate components of each bounding box, is prepared beforehand. With the coordinate components of the reference box as a search condition, the system searches the 6-d tree for bounding boxes included in the reference box. Then, the system performs coordinate transformation only on the objects corresponding to the obtained bounding boxes.
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