Digital halftoning space filling curves
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United States of America Patent
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Feb 11, 1997
Issued Date -
N/A
app pub date -
Nov 7, 1994
filing date -
Apr 28, 1992
priority date (Note) -
Expired
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Abstract
A digital halftoning method for creating a gray-scale monochrome reproduction of a source image includes subdividing the source image into regions based on a trace of the space filing curve, further subdividing each of the regions into equally sized pixels, scanning the source image along the trace of the space filling curve to visit all pixels of the source image, calculating an average image intensity for each region, establishing a range of pixel cluster intensity levels based on a number of pixels in a cluster, and generating a dot pattern for each of the pixel clusters by activating individual ones of the pixels to an 0N state in accordance with a sequential order along the trace of the space filling curve.
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