Preparation method of color block array with uniform visual chromatic aberration in specified color range

A color range and color block technology is applied in the field of preparation of a large number of color block arrays, which can solve problems such as unsatisfactory effects, and achieve the effects of high preparation efficiency, ensuring uniformity and improving preparation efficiency.

Pending Publication Date: 2020-12-15
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The uniform distribution of color blocks based on the color difference formula is an ideal way, but there is still a large inconsistency between the color difference formula and the human eye color difference feeling, and the effect is not ideal

Method used

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  • Preparation method of color block array with uniform visual chromatic aberration in specified color range
  • Preparation method of color block array with uniform visual chromatic aberration in specified color range
  • Preparation method of color block array with uniform visual chromatic aberration in specified color range

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Experimental program
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Effect test

Embodiment

[0036] In the embodiment of the present invention, a color block array with uniform visual color difference within a specified color range is prepared based on the printer.

[0037] The specified color range requirements in CIE L * a * b * color spacea* b * In-plane a * Value range is [-15.5, -0.6], b * The value range is [-40.1, -12.6], the L of all color blocks * The value is 49.3.

[0038] The uniform visual color difference requires that the standard deviation of the visual color difference between all adjacent rows and adjacent columns of the color block array is less than a preset value of 0.5.

[0039] The color block array is required to be an array of 25 color blocks in 5 rows and 5 columns, see figure 2 .

[0040] A color patch array with uniform visual color difference within a specified color range is prepared based on the printer, wherein the preparation method of the initial color patch array includes the following steps:

[0041] Step 1, according to t...

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Abstract

The invention discloses a preparation method of a color block array with uniformly distributed visual chromatic aberration in a specified color range, and belongs to the field of color science and technology. The method comprises the following steps: generating an initial color block array according to a specified color range and the number of color blocks required by the array, and outputting theinitial color block array on color output equipment; obtaining visual chromatic aberration between each adjacent row and each adjacent column through a visual chromatic aberration evaluation experiment; further obtaining a relation curve between the visual chromatic aberration of each row (column) relative to the center and the color value difference, uniformly segmenting the visual chromatic aberration according to the curve to obtain a new color value, generating a new color block array, and outputting the new color block array again; carrying out a visual chromatic aberration evaluation experiment again and calculating the standard deviation of adjacent visual color differences of the color block array; and judging whether the color block array is qualified or not according to the standard deviation, and if not, repeating the process. The color block array is not only suitable for a reflecting medium, but also suitable for a self-luminous medium.

Description

technical field [0001] The invention belongs to the field of color science and technology, and relates to a method for determining a color block array uniformly distributed in visual color difference, in particular to a method for preparing a color block array evenly distributed within a specified color range, which is applicable to the field of color science and technology The preparation of a large number of color patch arrays that require uniform distribution. Background technique [0002] In the field of color science research, a large number of psychophysical experiments are used to complete the data collection of color vision, and the experiment needs to prepare a large number of color samples for the subjects to choose. One type of color sample contains several color blocks, and these color blocks are distributed in an array (such as a 5*5 array) on a proof (or screen), such as the color samples required for the corresponding color collection experiment and the color ...

Claims

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Application Information

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IPC IPC(8): H04N1/60
CPCH04N1/6075H04N1/6077
Inventor 蔡圣燕冯璐史梦晴
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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