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Image processing apparatus and image processing method

An image processing device, table processing technology, applied in the direction of image communication, digital output to printing unit, electrical components, etc.

Inactive Publication Date: 2008-03-26
MURATA MASCH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a thing cannot be done by the above-mentioned image processing device

Method used

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  • Image processing apparatus and image processing method
  • Image processing apparatus and image processing method
  • Image processing apparatus and image processing method

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no. 1 Embodiment approach

[0049] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The image processing apparatus 100 of the present embodiment has the color table shown in FIG. 2(a) and the black-and-white table shown in FIG. 2(b), that is, has a plurality of look-up tables, and it selects one To convert image data into print data; among them, the color table is used to convert full-color image data composed of a lightness value (L) and multiple color values ​​(a, b) into three primary colors (CMY) and black (k) The full-color print data composed of density values ​​of black and white; the black-and-white table is used to convert full-color image data into black-and-white print data composed of black (k) density values.

[0050] In addition, the image processing device 100 of this embodiment further includes a table processing unit 110 that replaces the density values ​​of at least a part of the three primary colors (CMY) of the color table with...

no. 2 Embodiment approach

[0084] Next, a second embodiment of the present invention will be described with reference to the drawings. The image processing device 300 of this embodiment has a color table as shown in FIG. 8(a) and a black and white table as shown in FIG. To convert image data into print data; among them, the color table is used to convert full-color image data composed of a lightness value (L) and multiple color values ​​(a, b) into three primary colors (CMY) and black (k) The black and white table is used to convert full-color image data into black and white print data composed of black (k) density values.

[0085] In addition, the image processing device 300 has a table processing unit 310 for processing color values ​​(a, b) in the color table in which at least one of the color values ​​(a, b) is not 0, and in black and white parts where all are 0 On the one hand, the density values ​​of the three primary colors (CMY) and black (k) are replaced with the density values ​​of a specific...

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Abstract

An image processing apparatus includes a color table and a black and white (monochrome) table stored in a table storage unit. Image data is inputted to a data input unit. A table processing unit replaces a density value in at least a part of the three primary colors of the color table with a density value of the black and white table, and generates a temporary table by replacing all density values in other parts of the three primary colors and black with zero. A table retaining unit temporarily retains the temporary table. A data conversion unit converts the inputted image data into print data using the temporarily-retained temporary table. A data output unit outputs the converted print data.

Description

technical field [0001] The present invention relates to an image processing device for converting image data into print data, in particular to an image processing device for converting full-color image data into full-color or black-and-white print data using a lookup table. [0002] This application claims the priority of Japanese Patent Application No. 2006-253794 filed on September 20, 2006 and Japanese Patent Application No. 2006-253795 filed on September 20, 2006. Background technique [0003] Hitherto, there have been image processing devices that convert image data into print data. Such an image processing device functions as, for example, a printer driver installed in a personal computer as application software, a printer driver installed in a personal computer as hardware, a printer controller installed in a printer device by software, and a printer controller installed in a printer device as hardware. It is implemented by a printer controller of a printer device or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/46G06F3/12
Inventor 堂国贤治
Owner MURATA MASCH LTD
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