Method and system for generating international color consortium profile file

A technology for comparing files and colors, applied in electrical components, image data processing, instruments, etc., can solve problems such as spike noise, poor smoothness and accuracy of measurement data, and influence on measurement results, so as to improve quality, smoothness and Accuracy, effect of reducing noise interference

Inactive Publication Date: 2011-11-09
PEKING UNIV FOUNDER GRP CO LTD +1
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Problems solved by technology

However, when measuring the color blocks in the color target chart, due to the unstable state of the measuring instrument itself, the difference in the use environment, poor paper and ink, etc., the measurement results will deviate from t

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  • Method and system for generating international color consortium profile file
  • Method and system for generating international color consortium profile file
  • Method and system for generating international color consortium profile file

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Embodiment Construction

[0026] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and examples.

[0027] As mentioned above, in the color management, the measuring instrument is used to measure the chromaticity of the device, and then the input and output characteristics of the device are characterized by generating the Device ICC Profile, where the Device ICC Profile establishes the device-related space to the device The mapping relationship has nothing to do with the chromaticity space. This is a look-up table mode. Based on the smooth change of the input-output relationship, a series of color block values ​​are used to establish a multi-dimensional look-up table, and then any color value can be obtained by interpolation technology. Although this method needs to measure many color patches, as long as the test color value distribution is reasonable and the test points truly represent the output of the device, high accuracy can be guaranteed in ...

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Abstract

The invention provides a method and a system for generating an international color consortium (ICC) Profile file in the color management of printing and digital proofing. The method comprises the following steps of: optimizing a Lab value corresponding to a Neugebauer base color according to the measurement data of a color target diagram and a Neugebauer equation; filtering the measurement data of the color target diagram according to the optimized Lab value corresponding to the Neugebauer base color; and generating the ICC Profile file according to the filtered measurement data. Correspondingly, the invention provides the system for generating the ICC Profile file. The system comprises an optimization unit and a filtering unit. In the method and the system, the Lab value corresponding tothe Neugebauer base color in the color target diagram is optimized by utilizing a Neugebauer equation model, and the measured Lab values of all color blocks are filtered by utilizing the optimized Lab value corresponding to the Neugebauer base color, thereby reducing noise interference in the measurement of the color target diagram and improving the smoothness and accuracy of the measurement dataand the quality of the ICC Profile file.

Description

technical field [0001] The invention relates to the technical field of printing and digital proofing, in particular to a method and a system for generating a color control file in color management, that is, an ICC Profile file. Background technique [0002] Digital proofing is based on the digital publishing and printing system. During the production process of publishing and printing, the graphic information on the page is processed according to the production standards and specifications of publishing and printing, and then the new proofing technology of directly outputting the color sample is used, that is, the digitalized original is used to directly output and print Proofs. It uses a large-format printer to directly output proofing through digital methods to replace the lengthy proofing process of traditional proofing such as film making and printing. Therefore, digital proofing is a key link between prepress and printing in the printing industry, an important means of...

Claims

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Application Information

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IPC IPC(8): H04N1/00H04N1/58G06T5/00
Inventor 丁鹏李海峰王立东
Owner PEKING UNIV FOUNDER GRP CO LTD
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