Check patentability & draft patents in minutes with Patsnap Eureka AI!

Multi-spectral color measurement method

A color measurement, multi-spectral technology, used in color measurement devices, color/spectral characteristics measurement, color measurement using electrical radiation detectors, etc., can solve problems such as inability to achieve full-scale detection

Active Publication Date: 2017-12-22
BEIJING FOCUSIGHT TECH
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spectrophotometric method can only realize the color detection of the local area of ​​the printed matter. The printed matter is detected by scanning line by line on the surface of the printed matter, and the detection of the full format cannot be achieved.

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
  • Multi-spectral color measurement method
  • Multi-spectral color measurement method
  • Multi-spectral color measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

[0031] A multispectral color measurement method includes a method for calculating parameters in the process of color measurement and a method for implementing color measurement by using the parameters.

[0032] First, the parameters used in color measurement are calculated, which mainly includes three parts: calculation of colorimeter parameters (including: calculation of conversion parameters from spectrum to XYZ, conversion parameters from XYZ value to Lab), and image preprocessing process (including: Calculation of white balance parameters, calculation of image registration parameters), establishment of color measurement model (c...

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 multi-spectral color measurement method which includes a method of calculating parameters in the process of color measurement and a method of implementing color measurement using the parameters. First, parameters used in color measurement are calculated, which mainly includes the calculation of the parameters of a colorimeter, an image preprocessing process, and the establishment of a color measurement model. Then, color measurement is implemented using the parameters obtained. The problem in the prior art that a digital camera cannot measure the spectral value and a spectrometer can measure the spectral value but has limited measurement breadth is solved. By detecting the spectral reflectance through a digital camera, two advantages are achieved compared with the traditional method, namely, the spectral emissivity can be measured, and full-breadth detection can be realized.

Description

technical field [0001] The invention relates to the field of surface color measurement of printed matter, in particular to a multi-spectral color measurement method for measuring the corresponding spectral reflectance and Lab color value of an RGB image of a to-be-detected product collected by a 4-lens digital camera. Background technique [0002] The traditional color quality measurement methods on the surface of printed products include visual method, photoelectric integration method and spectrophotometric method. [0003] The visual method is to use the human eye to observe the color difference between the standard printed matter and the sample printed matter, usually under the standard light source specified by the International Color Alliance. However, the visual method mainly relies on the color observation experience of the inspectors to judge, which is too influenced by subjective factors, and the measurement efficiency is low, so it cannot form a unified color quali...

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
IPC IPC(8): G01J3/50G01J3/46G01N21/27
CPCG01J3/463G01J3/50G01N21/27
Inventor 王岩松都卫东王郑
Owner BEIJING FOCUSIGHT TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com