Spectrum curve reconstructing method and device

A spectral curve and spectrum technology, applied in the field of image detection, can solve problems such as distortion, large error, and difficulty in realization

Active Publication Date: 2018-04-13
BEIJING LUSTER LIGHTTECH
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is difficult to achieve in actual engineering implementation
As a result, more severe distortion tends to occur in these areas
lead to large errors

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
  • Spectrum curve reconstructing method and device
  • Spectrum curve reconstructing method and device
  • Spectrum curve reconstructing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0042] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0043]Specific embodiments of the present application provide a spectral curve reconstruction method and device. In the method, when determining N solutions for reconstructing the...

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 provides a spectrum curve reconstructing method and device. A sampling result of a first sampling point of a to-be-detected object is acquired. The sampling result of the first samplingpoint includes sampling information of M channels of the sampling point. M sampling functions are determined according to products of a light source output spectrum function and spectral response functions of M sampling information of a sampling device respectively. A sampling array matrix is determined according to an impulse function group and the sampling functions. An underdetermined system ofequations is determined according to the sampling array matrix and the sampling results. A coefficient S is determined according to the impulse function group and a prior spectrum function. Through aconstraint condition of taking the minimal value of the variant S, a spectrum function of the first sampling point is determined from a plurality of solutions of the underdetermined system of equations. According to the invention, the prior spectrum function substitute into a spectrum sampling reconstruction process so as to make up sampling deficiency of a to-be-measured spectrum curve. Therefore, use of excessive sampling points is avoided, cost is saved and system complexity is furthermore reduced.

Description

technical field [0001] The present application relates to the technical field of image detection, in particular to a spectral curve reconstruction method and device. Background technique [0002] At present, the requirements for color quality control of printed matter are constantly increasing. This puts forward higher requirements for the corresponding color detection means. It is necessary to achieve high-precision real-time measurement of the spectral reflectance function of the printed matter surface. However, the spectral reflectance function curve of the CMYK ink system commonly used in practice has a high instantaneous spectrum in individual areas. It needs to correspond to a very high sampling rate to be able to effectively restore. This is difficult to achieve in actual engineering implementation. Consequently, more severe distortion tends to occur in these areas. lead to larger errors. [0003] On the other hand, the spectral reconstruction aimed at the color...

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): G01J3/46G06T7/90
CPCG01J3/46G06T7/90G06T2207/10024G06T2207/30144
Inventor 朱炫霖姚毅赵严
Owner BEIJING LUSTER LIGHTTECH
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap