Methods, systems, and media to enhance image processing in a color reprographic system
First Claim
1. A method for enhancing image processing for a color reprographic system, the method comprising:
- scanning a scan target having known characteristics with a scanner to generate scanner data;
detecting a gray balance distortion in the scanner data with respect to the known characteristics and generating scanner gray balance parameters when the gray balance distortion exceeds a balance threshold;
detecting a color distortion in the scanner data with respect to the known characteristics and generating scanner color parameters;
printing a printer target from a digital target;
scanning the printed target with the scanner to generate printer data;
correcting the scanned printer target based upon parameters generated for the scanner; and
detecting a halftone frequency associated with the scanned printer target to select a descreen filter.
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Abstract
Methods, systems, and media to enhance image processing for a color reprographic system are disclosed. Embodiments of the invention may calibrate a component like scanner and/or printer in response to user input and/or coupling the component to the reprographic system. More specifically, embodiments may generate correction parameters that describe differences in color values between an image scanned by a scanner or an image printed by the printer by comparing the outputs to known characteristics like color values for the image. Some embodiments comprise a graphical user interface (GUI) to communicate with the user, allowing the user to select user preferences to change, for example, the brightness of an image being copied. Further embodiments incorporate network and phone system interfaces to communicate with remote components as well as to receive input from and/or output to other systems via email, facsimile, etc.
122 Citations
40 Claims
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1. A method for enhancing image processing for a color reprographic system, the method comprising:
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scanning a scan target having known characteristics with a scanner to generate scanner data;
detecting a gray balance distortion in the scanner data with respect to the known characteristics and generating scanner gray balance parameters when the gray balance distortion exceeds a balance threshold;
detecting a color distortion in the scanner data with respect to the known characteristics and generating scanner color parameters;
printing a printer target from a digital target;
scanning the printed target with the scanner to generate printer data;
correcting the scanned printer target based upon parameters generated for the scanner; and
detecting a halftone frequency associated with the scanned printer target to select a descreen filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for enhancing image processing for a modular, color reprographic system, the method comprising:
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receiving an instruction to copy a page via a scanner and a printer;
selecting an image processing technique from a set of image processing techniques based upon detected characteristics of the printer and the scanner;
configuring the image processing technique based upon the detected characteristics;
scanning the page;
correcting the page data based upon the configured image processing technique; and
printing the page data with the printer. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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- 22. The method of claim 12, wherein printing the page data comprises compressing the page data for transmission to the printer.
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22-1. A method for enhancing image processing for a color reprographic system, the method comprising:
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receiving page data to print with a printer;
separating black data represented by pixels in a color space and color image data from the page data;
binarizing the black data to convert the black data to black color values;
determining whether halftoning associated with the printer interacts with halftoning of the page data;
filtering the color image data with a descreen filter associated with the halftoning of the page data when the halftoning associated with the printer is determined to interact with the halftoning of the page data;
correcting the color image data with printer correction parameters for the printer; and
printing a combination of the binarized black text data and the corrected color image data with the printer.
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26. An apparatus for enhancing image processing for a reprographic system, the apparatus comprising:
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a scanner detector to compare color image data with target data to detect differences between the color image data and the target data with respect to a gray balance distortion of a gray patch and a scanner color distortion of color values of pixels in the color image data, and to generate scanner correction parameters to compensate for the scanner color distortion and for the gray balance distortion of a scanner when the gray balance distortion exceeds a balance threshold, when the color image data is generated from a scan of a scanner target associated with the target data via the scanner;
a printer detector to detect a halftone frequency with a printer based upon a pattern of pixels in the color image data and differences between the color image data and the target data with respect to a printer color distortion of color values of pixels in the color image data, and to generate printer correction parameters to describe the printer color distortion and the halftone frequency when the halftone frequency associated with the printer is below a threshold frequency, when the color image data is scanned from a printed target from the printer; and
an image adjuster coupled with the scanner detector and the printer detector to adjust pixels of the color image data for distortions based upon the scanner correction parameters generated for the scanner when the scanner is associated with the color image data and the printer correction parameters generated for the printer when the printer is associated with the color image data, and to apply a descreen filter associated with the halftone frequency to adjust pixels of the color image data when the color image data is to be printed by the printer. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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34. A machine-accessible medium containing instructions, which when executed by a machine, cause said machine to perform operations, comprising:
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scanning a scan target having known characteristics with a scanner to generate scanner data;
detecting a gray balance distortion in the scanner data with respect to the known characteristics and generating scanner balance parameters when the gray balance distortion exceeds a balance threshold;
detecting a color distortion in the scanner data with respect to the known characteristics and generating scanner color parameters;
printing a printer target from a digital target;
scanning the printed target with the scanner to generate printer data;
correcting the scanned printer target based upon parameters generated for the scanner; and
detecting a halftone frequency associated with the scanned printer target to select a descreen filter. - View Dependent Claims (35, 36, 37, 38, 39, 40)
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Specification