Calvin M. Dickson - Salt Lake City UT Kevin C. Rushforth - West Valley City UT
Assignee:
Evans & Sutherland Computer Corporation - Salt Lake City UT
International Classification:
G09G 116
US Classification:
340728
Abstract:
A line-filtering antialiasing apparatus for a computer graphics display, with a set of parallel pixel processors functioning independently in a line drawing system and with plotting apparatus assigning individual pixels to the processors so as to track to the line. An optimum number of sixteen processors filter proximity data based on the vertical distance from a pixel center to the line center for shading pixels to gray-scale intensity in an area of influence four pixels wide. Line terminations are extended and shaded at the termination area. Pixel values for individual lines are summed to develop a total display image.