Method of realizing cross-media color reproduction based on spectral domain

A color reproduction, spectral domain technology, applied in the spectral domain mapping field, can solve problems such as error, chromaticity influence, influence basic spectrum, etc., to achieve the effect of reducing time complexity, saving computing time, and easy to use

Active Publication Date: 2017-02-15
山东济清科技服务有限公司
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Problems solved by technology

However, the spectral mapping strategy based on metamerism black compensation is based on pre-calculating the color value of the point to be mapped (such as the LabPQR value) for mapping, while ignoring the influence of chromaticity mapping on the metamerism black space
In the process of chromaticity mapping, not only the chromaticity is affected (that is, the basic spectrum is affected), the original spectrum is subtracted from the basic spectrum after the change, and the metamerism black spectrum has a

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  • Method of realizing cross-media color reproduction based on spectral domain
  • Method of realizing cross-media color reproduction based on spectral domain
  • Method of realizing cross-media color reproduction based on spectral domain

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[0031] In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the following embodiments will specifically illustrate the cross-media spectral domain mapping method of the present invention in conjunction with the accompanying drawings.

[0032] figure 1 It is a flow chart of the cross-media spectral domain mapping method of the present invention.

[0033] like figure 1 As shown, the mapping method across the media spectral domain provided by the present invention comprises the following steps:

[0034] Step 1, collect the spectral reflectance of the source device and the spectral reflectance of the target device; calculate the CIE Lab value corresponding to the spectral reflectance of the source device and the spectral reflectance of the target device, and then perform colorimetric analysis based on the Lab value of the target device Color gamut boundary description, establish the chroma color gamut space of th...

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Abstract

The invention relates to the technical field of spectral domain mapping, and especially discloses a method of realizing cross-media color reproduction based on a spectral domain. The method of realizing cross-media color reproduction based on a spectral domain is characterized by comprising the following steps: establishing a chromaticity-gamut space of a target device; judging whether the CIE Lab value of a source device sample point is within the chromaticity-gamut space of the target device; forming a metameric black spectrum according to the CIE Lab value corresponding to each test sample; reducing the dimension of the metameric black spectrum to get a metameric black dimension reduction space; and in the metameric black dimension reduction space, judging whether the dimension reduction space numerical value of each test sample is within the dimension reduction space value numerical range of the target device. The time complexity is reduced. The dimension is low. The method is set up using a spectral color management system, and is convenient for users to use.

Description

[0001] (1) Technical field [0002] The invention relates to the technical field of spectral domain mapping, in particular to a method for realizing cross-media color reproduction based on the spectral domain. [0003] (2) Background technology [0004] With the development of science and technology and the advent of the digital information all-media era, the high-quality transmission and high-fidelity reproduction of colors between diversified color-carrying media has increasingly become the ultimate goal pursued by the fields of display, printing and dyeing, and textiles. In the process of cross-media color reproduction, color gamut mapping has always been the focus of international research in the field of color science and image reproduction. Color gamut refers to the range of colors that can be represented, and is generally divided into two types: chromaticity-based color gamut and spectrum-based color gamut (spectral gamut for short). The color gamut based on chromaticit...

Claims

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Application Information

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IPC IPC(8): G06T7/90G06K9/46G06K9/62
CPCG06T2207/10024G06V10/56G06F18/23
Inventor 吴光远林茂海陈业红吕平丽胡桂春晁季蕾
Owner 山东济清科技服务有限公司
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