Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for correcting colour of colour difference meter by utilizing tetrahedron interpolation method

A tetrahedral interpolation and color correction technology, which is applied in color measurement devices, calculations, image data processing, etc., and can solve the problems of inaccurate color correction and slow calculation speed.

Inactive Publication Date: 2012-03-28
BOYA ZHIHUI INT
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of inaccurate color correction and slow calculation speed in the color difference meter based on RGB three-color analysis, the method of the present invention is: use the three-dimensional Delaunay algorithm to tetrahedralize the primary color space measured by the instrument, and according to the input The position relationship between the point and the tetrahedron where it is located realizes the interpolation calculation and performs fast and accurate color correction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for correcting colour of colour difference meter by utilizing tetrahedron interpolation method
  • Method for correcting colour of colour difference meter by utilizing tetrahedron interpolation method
  • Method for correcting colour of colour difference meter by utilizing tetrahedron interpolation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] Taking the R component as an example,

[0048] R n =b 1 +a 11 R a +a 12 G a +a 13 B a

[0049] Assuming that the input and output values ​​​​of 4 vertices are known, there are:

[0050] R n 1 = b 1 + a 11 R a 1 + a 12 G a 1 + a 13 B a 1 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for correcting colour of a colour difference meter by utilizing a tetrahedron interpolation method. Firstly, the traditional interpolation algorithm is used for measuring base colour points in required quantity, then a three-dimensional Delaunay triangulation algorithm is used for carrying out tetrahedron subdivision on base colours, and creating a lookup table by utilizing a tetrahedron set obtained by subdivision; after the lookup table is generated, supposing an input point to be P, after A is obtained, and further judging that which tetrahedron the input point P is located in A by utilizing a volume relation between the point p and each tetrahedron in A, wherein if more than two tetrahedrons are contained in B, the point p is a vertex of some tetrahedron, namely the point p is a point belonging to an interpolation point set, no interpolation is required, and a target RGB (red, green and blue) value can be directly output; and mapping of an imaging system is supposed to be in a linear relation, output standard colour value is pn=(Rn, Gn, Bn), and T can be shown by the following formula: pn-p=lambda*n*sigma. Compared with a common colour measuring method based on trichromatic analysis, the method provided by the invention has the characteristics of simplicity, speediness and accuracy.

Description

technical field [0001] A method for color correction of colorimeter by using tetrahedron interpolation method Background technique [0002] Industries such as plastics, spraying, design, printing, clothing, and printing and dyeing need to measure colors as accurately as possible to meet the needs of high-quality and accurate color selection, color matching and color fixing. [0003] Although the existing color difference meters in the society can basically meet the requirements of the above-mentioned industries for basic color measurement, the existing technology is not accurate enough to measure and correct the color of the color difference meter itself, and the speed is relatively slow, resulting in the color difference meter itself. The benchmark error cannot meet the needs of related industries for high-quality and accurate color selection, color matching and color fixing. Contents of the invention [0004] The purpose of the present invention is to design a new tetra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/40G01J3/46G06T7/90
Inventor 林金龙欧阳泳春王果
Owner BOYA ZHIHUI INT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products