METHODS AND APPARATUS FOR REDUCED LOW-TONE HALF-TONE PATTERN VISIBILITY
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United States of America Patent
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Issued Date -
Jul 17, 2014
app pub date -
Jan 16, 2013
filing date -
Jan 16, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This disclosure provides methods, apparatus, and computer programs encoded on computer storage media for reduced low tone pattern visibility. In one aspect, the disclosed methods receive an input image including a plurality of pixels, quantize the plurality of pixels, set half-tone image pixels corresponding to the portion of the input pixels that are below a crush threshold to a crushed value, and diffuse the quantization error resulting from the quantizing to half-tone image pixels other than the portion. In some implementations, the half-tone image pixels are then output to an output device such as an electronic display.
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