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US 7,453,600 B1Granted
Text region identification and enhancement during color copy
AssigneeConexant Systems, Inc.
InventorsDerek T. Walton, Gyung Nam Boo
Life of this patent
Estimating the term…
Abstract
There is provided a method for enhancing text reproduction by a color copier in a copy of a document that includes both text and graphic regions, the method includes creating an ink density map from a data image of the document identifying a region of the ink density map as a text region, a partial text region, a color region or a white region and modifying the data image for corresponding regions identified as text areas.
Claims20
A method, comprising:
- receiving a data image of a document, wherein the data image comprises at least one plane of data for each of cyan, magenta, yellow and black ink types;
- classifying each of a plurality of rectangular regions of the data image as one of a text region, a color region, and a white region;
- identifying boundaries between color regions and text regions;
- and
- modifying the data image to designate a plurality of partial text regions, wherein each of the plurality of partial text regions receives a fractional text treatment, wherein the fractional text treatment is determined based on a distance of the partial text region from at least one of the identified boundaries.
2 more elements
A computer-readable medium encoded with computer executable
- instructions that, when executed by a processor, cause the processor to:
- receive a data image of a document, wherein the data image comprises at least one plane of data for each of cyan, magenta, yellow and black ink types;
- classify each of a plurality of rectangular regions of the data image as one of a text region, a color region, and a white region;
- identify boundaries between color regions and text regions;
- and
- modify the data image to designate a plurality of partial text regions, wherein each of the plurality of partial text regions receives a fractional text treatment, wherein the fractional text treatment is determined based on a distance of the partial text region from at least one of the identified boundaries.
3 more elements
A system, comprising:
- a receiving module to receive a data image of a document, wherein the data image comprises at least one plane of data for each of cyan, magenta, yellow and black ink types;
- a classification module to classify each of a plurality of rectangular regions of the data image as one of a text region, a color region, and a white region;
- a boundary identification module to identify boundaries between color regions and text regions;
- and
- a modification module to modify the data image to designate a plurality of partial text regions, wherein each of the plurality of partial text regions receives a fractional text treatment, wherein the fractional text treatment is determined based on a distance of the partial text region from at least one of the identified boundaries.
2 more elements
Dependencies are inferred from the claim text.