Temperature measurement method based on image data normalization technology

A technology of image data and normalization, applied in the field of infrared temperature measurement, can solve the problem of low temperature measurement accuracy, achieve the effect of improving temperature measurement accuracy and repeatability accuracy

Active Publication Date: 2020-05-29
HARGLO APPLIED LASER TECH INST CO LTD
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Infrared thermal imaging temperature measurement technology is a non-contact temperature measurement. Because of its fast response speed, no damage to the temperature field of the measured object, and the ability to detect some difficult-

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
  • Temperature measurement method based on image data normalization technology
  • Temperature measurement method based on image data normalization technology
  • Temperature measurement method based on image data normalization technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention will be further described below in conjunction with embodiment:

[0028] Such as Figure 1 to Figure 2 As shown, a temperature measurement method based on image data normalization technology includes the following steps:

[0029] (1) Turn on the uncooled thermal imaging camera and wait for the thermal equilibrium of the uncooled thermal imaging camera;

[0030] (2) The image is non-uniformly corrected to obtain a non-uniformly corrected image;

[0031] (3) Blind element removal;

[0032] (4) Measure the black body radiation with an uncooled infrared thermal imager to obtain each temperature T i The corresponding pixel image gray value data gray0(m,n);

[0033] (5) normalize the image gray value data;

[0034] (6) Establish a temperature measurement mathematical model of the relationship between the normalized image gray value and temperature;

[0035] (7) Use the temperature measurement mathematical model in step (6) to calculate the correspo...

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 temperature measurement method based on an image data normalization technology. The temperature measurement method comprises steps of (1) starting an uncooled thermal infrared imager to reach thermal balance; (2) obtaining an image after non-uniform correction; (3) removing blind pixels; (4) measuring black body radiation by using the uncooled thermal infrared imager toobtain gray value data of a certain pixel image corresponding to each temperature Ti; (5) normalizing the gray value data of the image; (6) establishing a temperature measurement mathematical model ofthe relationship between the normalized image gray value and the temperature; and (7) calculating a temperature value corresponding to each gray scale by utilizing the temperature measurement mathematical model, wherein an image gray scale value inputted into the temperature measurement mathematical model needs to be normalized according to the step (5). The temperature measurement method is advantaged in that the relation between the normalized image data and the temperature is used for fitting the curve model, the model is used for temperature measurement so that the temperature measurementprecision can be improved, repeatability precision can further be improved, that is to say, the temperature measurement result of the same pixel used for each startup is not greatly changed.

Description

technical field [0001] The invention relates to the technical field of infrared temperature measurement, in particular to a temperature measurement method based on image data normalization technology. Background technique [0002] Infrared thermal imaging technology is a technology that receives infrared radiation emitted by a target at a certain distance through an infrared sensor, and then transforms it into a video thermal image of the target by a signal processing system. It converts the thermal distribution of an object into a visual image , and displayed on the monitor in grayscale or pseudo-color, so as to obtain the temperature distribution field of the measured target. Infrared thermal imaging temperature measurement technology is a non-contact temperature measurement. Because of its fast response speed, no damage to the temperature field of the measured object, and the ability to detect some difficult-to-reach or forbidden-to-contact measured objects online, this t...

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): G01J5/00G01J5/08
CPCG01J5/00G01J5/0887G01J2005/0077G01J5/80
Inventor 张剑张志强李婷于旭东周玉梅
Owner HARGLO APPLIED LASER TECH INST CO LTD
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