Symptomatic reduction of banding artifacts
AssigneeHewlett-Packard Development Company, L.P.
InventorsDoron Shaked, Omer Gila, Rodney Shaw
Life of this patent
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Abstract
A digital image is reproduced by printing a set of test patterns with a print engine that produces banding artifacts; generating a parametric artifact model of the banding artifacts in the prints of the test patterns; modifying the digital image with the parametric artifact model; and using the print engine to make prints of the modified digital image. The modifications cause a reduction in visibility of banding artifacts in the prints of the modified digital image.
Claims30
A method for reproducing a digital image, the method comprising:
- printing a set of test patterns with a print engine that produces banding artifacts;
- generating a parametric artifact model of the banding artifacts in the prints of the test patterns;
- modifying the digital image with the parametric artifact model;
- and
- using the print engine to make prints of the modified digital image;
- the modifications causing a reduction in visibility of banding artifacts in the prints of the modified digital image.
Apparatus comprising:
- a print engine;
- and
- a controller for causing the print engine to print a set of test patterns;
- the controller generating a parametric artifact model of banding artifacts in the test patterns;
- the controller using the parametric artifact model to compensate for the artifacts in subsequent prints made by the print engine.
Apparatus comprising:
- a liquid electrophotography print engine;
- first means for generating a parametric artifact model of banding artifacts in test patterns printed by the print engine;
- and
- second means for using the parametric artifact model to cause a reduction in visibility of banding artifacts in subsequent prints made by the print engine.
Apparatus for a liquid electrophotography print engine, the apparatus comprising a processor for measure banding artifacts in a first set of prints produced by the print engine, and for using the measurements to generate a parametric artifact model that compensates each color separation for banding artifacts in subsequent prints made by the print engine.
An article for a processor of a liquid electrophotography print engine, the article comprising memory programmed to instruct the processor to measure banding artifacts in a set of test patterns printed by the print engine;
- and use the measurements to generate a parametric artifact model that compensates each color separation for banding artifacts in subsequent prints made by the print engine.
Dependencies are inferred from the claim text.