Methods, systems, and media to enhance image processing in a color reprographic system
View Patent ↗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.
1. A method for enhancing image processing for a color reprographic system, the method comprising:
receiving page data to print with a printer;
separating black text data represented by pixels in a color space and color image data from the page data;
binarizing the black text data to convert the black text data to black color values;
determining if halftoning associated with the printer interacts with halftoning of the page data when a halftone frequency of the page data is approximately the same as a halftone frequency of the printer;
filtering the color image data with a descreen filter associated with the halftoning of the page data responsive to the determination that the halftone frequency of the page data is approximately the same as the halftone frequency of the printer;
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.
2. The method of claim 1 , further comprising combining the binarized black text data and the corrected color image data and compressing the combined data for transmission to the printer.
3. The method of claim 1 , further comprising scaling the black text data.
4. The method of claim 3 , wherein scaling the black text data comprises generating grey bit data for each black pixel based upon color bits of each black pixel.
5. The method of claim 1 , wherein printing the combination comprises generating a postscript file to transmit to the printer.
6. The method of claim 1 , further comprising:
filtering the color image responsive to determining that the halftone frequency of the printer is less than about 170 dpi.
7. A non-transitory computer readable medium tangibly embodying programmed instructions which, when executed by a computer system, are operable to perform a method of enhancing image processing for a color reprographic system, the method comprising:
receiving page data to print with a printer;
separating black text data represented by pixels in a color space and color image data from the page data;
binarizing the black text data to convert the black text data to black color values;
determining if halftoning associated with the printer interacts with halftoning of the page data when a halftone frequency of the page data is approximately the same as a halftone frequency of the printer;
filtering the color image data with a descreen filter associated with the halftoning of the page data responsive to the determination that the halftone frequency of the page data is approximately the same as the halftone frequency of the printer;
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.
8. The non-transitory computer readable medium of claim 7 further comprising combining the binarized text data and the corrected color image data and compressing the combined data for transmission to the printer.
9. The non-transitory computer readable medium of claim 7 further comprising scaling the black text data.
10. The non-transitory computer readable medium of claim 9 wherein scaling the black text data comprises generating grey bit data for each black pixel based upon color bits of each black pixel.
11. The non-transitory computer readable medium of claim 7 wherein printing the combination comprises generating a postscript file to transmit to the printer.
12. The non-transitory computer readable medium of claim 7 further comprising:
filtering the color image responsive to determining that the halftone frequency of the printer is less than about 170 dpi.
13. A system operable to enhancing image processing for a color reprographic system, the system comprising:
a controller operable to receiving page data to print on a printer;
an image adjuster operable to separate black text data represented by pixels in a color space and color image data from the page data; and
an image adjuster operable to binarize the black text data to convert the black text data to black color values, to determine if halftoning associated with the printer interacts with halftoning of the page data when a halftone frequency of the page data is approximately the same as a halftone frequency of the printer, to filter the color image data with a descreen filter associated with the halftoning of the page data responsive to the determination that the halftone frequency of the page data is approximately the same as the halftone frequency of the printer, and to correct the color image data with printer correction parameters for the printer,
wherein the printer is configured to print a combination of the binarized black text data and the corrected color image data.
14. The system of claim 13 wherein the image adjuster is further operable to combine the binarized black text data and the corrected color image data, and to compress the combined data for transmission to the printer.
15. The system of claim 13 wherein the image adjuster is further operable to scale the black text data.
16. The system of claim 15 wherein scaling the black text data comprises generating grey bit data for each black pixel based upon color bits of each black pixel.
17. The system of claim 13 wherein the printer is further configured to receive a post script file including the combination of the binarized black text data and the corrected color image.
18. The system of claim 13 wherein the image adjuster is further operable to filter the color image responsive to determining that the halftone frequency of the printer is less than about 170 dpi.