US 6,982,724 B2
Method for antialiasing an object represented as a two-dimensional distance field in object-order
Sarah F. Frisken, Cambridge, Mass. (US); and Ronald N. Perry, Cambridge, Mass. (US)
Assigned to Mitsubishi Electric Research Labs, Inc., Cambridge, Mass. (US)
Filed on Mar. 25, 2003, as Appl. No. 10/396,861.
Prior Publication US 2004/0189662 A1, Sep. 30, 2004
Int. Cl. G09G 5/00 (2006.01)
U.S. Cl. 345—611 134 Claims
OG exemplary drawing
 
1. A method for antialiasing a region of a two-dimensional distance field representing an object, wherein the two-dimensional distance field is partitioned into cells, each cell including a method for reconstructing the two-dimensional distance field within the cell, comprising:
identifying a set of cells of a two-dimensional distance field representing an object, the set of cells associated with a region of the two-dimensional distance field to be rendered;
locating a set of pixels associated with the region;
specifying a set of components for each pixel in the set of pixels; and
determining an antialiased intensity for each component of each pixel in the set of pixels, the determining further comprising:
determining a distance for the component of the pixel from the set of cells; and
mapping the distance to the antialiased intensity of the component of the pixel.