Method and apparatus for determining graphical object visibility

Details Method and apparatus for determining graphical object visibility Method and apparatus for determining graphical object visibility

1996-06-21

1998-03-31

Nguyen, Phu K.

395121, G06T 1540

Patent

active

057348065

ABSTRACT:
An apparatus for rendering visible graphical objects on a display including apparatus for scan converting each graphical object into multiple pixels with depth, each pixel being provided an object identifier of the object, apparatus for storing in memory the depth and object identifier of each pixel which has a pixel depth closer to a viewer than previously stored depth for a given pixel location, and apparatus for rendering graphical objects having object identifiers stored in memory. In addition, a method of rendering visible graphical objects on a display, including the steps of scan converting each graphical object into multiple pixels with depth, each pixel being provided an object identifier of the object, storing in memory the depth and object identifier of each pixel which has a pixel depth closer to a viewer than previously stored depth for a given pixel location, and rendering graphical objects having object identifiers stored in memory.

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W. R. Franklin, "Combinatorics of Hidden Surface Algorithms", PhD theis, Center for Research in Computing Technology, Harvard University, Jun. 1978 .

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