SYSTEMS AND METHODS FOR ASSOCIATING COLOR PROFILES WITH A SCANNED INPUT IMAGE USING SPATIAL ATTRIBUTES
First Claim
Patent Images
1. A method for identifying one or more color profiles for use with a scan of a printed image, comprising:
- scanning the printed image;
determining spatial characteristics of the printed image from the scanned image data;
comparing the spatial characteristics of the scanned printed image with spatial characteristics associated with color characterization profiles; and
selecting one or more color profiles based on the comparison of the spatial characteristics.
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Abstract
Methods and systems used to associate color calibration profiles with scanned images based on identifying the marking process used for an image on a substrate using spatial characteristics and/or color of the image. Image types which are classified and identified include continuous tone images and halftone images. Among halftone images separately identified are inkjet images, xerographic images and lithographic images. Locally adaptive image threshold techniques may be used to determine the spatial characteristics of the image.
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Citations
40 Claims
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1. A method for identifying one or more color profiles for use with a scan of
a printed image, comprising: -
scanning the printed image;
determining spatial characteristics of the printed image from the scanned image data;
comparing the spatial characteristics of the scanned printed image with spatial characteristics associated with color characterization profiles; and
selecting one or more color profiles based on the comparison of the spatial characteristics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for generating a color profile with associated spatial characterization data, comprising:
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scanning a printed color characterization target having a plurality of different colored regions;
using measurement data corresponding to different colored regions to create a color transformation from scanned values to output color values for the color profile;
statistically analyzing the spatial distribution of color values in the scanned image of the target; and
associating spatial characteristics obtained from the statistical analysis with the color profile. - View Dependent Claims (13, 14)
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15. A method of combining image spatial characteristics profiling and color calibration profiling for a printed image, comprising:
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scanning the printed image;
determining spatial characteristics of the printed image;
statistically analyzing the spatial characteristics of the printed image;
determining spatial variations in the printed image based on the analyzed spatial characteristics;
creating a spatial characteristics profile for the printed image based on the determined spatial variations;
comparing the printed image spatial characteristics profile with spatial characteristics associated with stored color calibration profiles; and
selecting one or more color profiles based on the comparison of spatial characteristics. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A machine-readable medium that provides instructions for determining an image marking process used to create a printed image, instructions, which when executed by a processor, cause the processor to perform operations comprising:
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scanning the printed image;
determining spatial characteristics of the printed image;
statistically analyzing the spatial characteristics of the printed image;
determining local spatial variations in the printed image based on the analyzed spatial characteristics;
selecting a color calibration profile tag for the scanned printed image based on the determined local spatial variations in the printed image; and
determining the image marking process used to create the printed image based on the determined local spatial variations in the printed image and the selected color calibration profile tag. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A media/image marking process identification system for a printed page, comprising:
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a memory; and
a media/image marking process identification determination circuit, routine or application that identifies at least one of a media type for the printed page or an image marking process used to process the printed page, by processing the printed page to determine spatial characteristics of the printed image;
statistically analyzing the spatial characteristics of the printed image;
determining local spatial variations in the printed image based on the analyzed spatial characteristics; and
selecting a color calibration profile tag for the scanned printed image based on the determined local spatial variations in the printed image. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40)
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Specification