EINFÜGUNG VON TRAPS IN SEITEN IM SEITENBESCHREIBUNGSSPRACHFORMAT
摘要
<p>A trapping technique which accepts a Postscript or other page description language (PDL) file and outputs a file in PDL format having the correct traps. The input page is first divided into sub-portions, or tiles, and the tiles are individually processed by evaluating the input file in a corresponding clipping window. Each tile is then analyzed to determine where edges exist. The edge data is fed to an edge converter which produces a list of color transitions consisting of the analytic description of each edge and the color information along the sides of the edge. The color transition information is fed to a trapping analyzer which generates trap vectors in accordance with a set of desired trapping rules. The trap vectors are then converted to PDL form. As a final step, the trap vectors are added to the original PDL file. The final trapped page may be printed on standard typesetters without the need for special trap generator hardware.</p>
申请公布号
DE69229171(D1)
申请公布日期
1999.06.17
申请号
DE1992629171
申请日期
1992.03.03
申请人
ADOBE SYSTEMS, INC., MOUNTAIN VIEW, CALIF. 94039, US
发明人
BJORGE, PER, H., HOLLIS, NH 03049, US;BLANNIN, ALAN, AMHERST, NH 03031, US;DEUTSCH, KEITH, R., AMHERST, NH 03031, US