Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for correcting accurate position of light spot array of snapshot imaging spectrometer

An imaging spectrometer and a calibration method technology, applied in the field of spectrometers, can solve the problems of not extracting bright spots, reducing the spectral calibration accuracy of snapshot-type video imaging spectrometers, etc.

Active Publication Date: 2021-07-06
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The extraction of bright spots on the background target surface in the prior art is mainly realized by setting a global threshold, resulting in some areas of the target surface still having some bright spots not extracted or extracting invalid bright spots, thus seriously reducing the snapshot video imaging performance. Spectrometer Spectral Calibration Accuracy

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 accurate position of light spot array of snapshot imaging spectrometer
  • Method for correcting accurate position of light spot array of snapshot imaging spectrometer
  • Method for correcting accurate position of light spot array of snapshot imaging spectrometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0046] In a preferred embodiment, the lattice is formed by mercury lamp spots.

[0047]In a preferred embodiment, the punctuation coordinate law of the lattice is as follows: the point coordinates of the first row and the first column are (x 1 ,y 1 ), the coordinates of the point in the first row and column m are (x m ,y 1 ), the coordinates of the point in the first column of the nth row are (x 1 ,y n ).

[0048] In a preferred embodiment, the horizontal step size of each sub-region is The vertical step size of each sub-region is

[0049] The specific operation of this method: first divide the sub-regions, then update the threshold for each sub-region, perform T′(i, j) calculation, then confirm the position of the bright spots in the sub-regions, and finally, judge the validity of the bright spots.

[0050] Divide into sub-regions: Divide the entire target surface into m×n rectangular sub-areas for the step size, and use the gray histogram algorithm to calculate t...

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 discloses a method for correcting the accurate position of a light spot array of a snapshot imaging spectrometer, and the method comprises the steps: selecting a light spot dot matrix in a full target surface, then dividing rectangular sub-regions, obtaining a threshold value of each sub-region through a histogram algorithm, and then representing the optimal threshold value of the central region according to the initial threshold value and the weight coefficient of the adjacent sub-regions of one sub-region, then determining the bright spot position of the sub-region, and finally judging whether the bright spot is an effective point or not. According to the method, effective point extraction and invalid point elimination are realized, and interference of invalid bright points on spectrum calibration is avoided.

Description

technical field [0001] The invention belongs to the technical field of spectrometers, in particular to a method for correcting the precise position of a spot array of a snapshot imaging spectrometer. Background technique [0002] The extraction of bright spots on the background target surface in the prior art is mainly realized by setting a global threshold, resulting in some areas of the target surface still having some bright spots not extracted or extracting invalid bright spots, thus seriously reducing the snapshot video imaging. Spectrometer spectral calibration accuracy. Contents of the invention [0003] In order to solve the above problems, the present invention provides a method for correcting the precise position of a spot array of a snapshot imaging spectrometer, which includes the following steps: [0004] S1: Select m×n lattices in the whole target surface; [0005] S2: Divide the above target surface into m×n rectangular sub-areas, and calculate the horizon...

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): G01N21/27
CPCG01N21/274
Inventor 杨晋王明佳冯树龙陈佳奇孙慈宋楠赵梓彤于昌本王添一
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com