Memory free method of region filling
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United States of America Patent
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May 8, 2007
Grant Date -
Jul 15, 2004
app pub date -
Mar 14, 2002
filing date -
Mar 14, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A method of coloring a plurality of cells using a predetermined fill-color, the cells occupying a region in a grid of cells thereby defining a plurality of region-cells, the method comprising: (a) dividing the grid into a plurality of elementary-regions, each comprising at least one cell; (b) visiting one elementary-region at a time and determining, for each cell of the elementary-region, whether the cell is a region-cell; (c) writing color data in at least one region-cell of each elementary-region using a color selected from a color-space so as to store information in the elementary-region, the information directing a backtracking path in the region, thereby providing a mapped elementary-region; and (d) using the information for visiting all the mapped elementary-regions along the backtracking path and for writing color data using the fill-color in each region-cell of each of the mapped elementary-region along the backtracking path; thereby coloring all the region-cells by the fill-color.
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