Emissivity Calibration and Research of Infrared Image Processing in the Cutting Temperature Test

2007 ◽  
Vol 10-12 ◽  
pp. 928-933
Author(s):  
Yi Wen Wang ◽  
Huan Rui Hao ◽  
Xian Li Liu ◽  
Cai Xu Yue
Keyword(s):  
Thermal Imaging ◽  
Imaging System ◽  
Cutting Temperature ◽  
Infrared Image ◽  
Edge Extraction ◽  
Imaging Device ◽  
Infrared Image Processing ◽  
System Temperature ◽  
Thermal Imaging System ◽  
Temperature Test

It is by the emissivity of the goal objects and the noise problem of the high temperature images that people are puzzled during the course of the cutting temperature tested by the application of thermal imaging device. By using thermocouples, and getting the comparison of thermocouples and the thermal imaging system temperature, we calibrate object emissivity, handle the image noise by improved median method, carry on the edge extraction of image, obtain the temperature of measured objects, and finally confirm the accuracy of the data got by the thermal imaging device with contact measurement.

scholarly journals Reducing inter-operator variability when measuring subcutaneous tumours in mice: An investigation into the effect of inter-operator variability when using callipers or a novel 3D and thermal measurement system

2021 ◽  
Author(s):  
Daniel Brough ◽  
Andrew Smith ◽  
Karl Turley ◽  
Hope Amos ◽  
Jake Murkin
Keyword(s):  
Cell Lines ◽  
Thermal Imaging ◽  
Imaging System ◽  
Tumour Volume ◽  
Entire Study ◽  
Imaging Device ◽  
Wide Range ◽  
Thermal Imaging System ◽  
Animal Strains

Consistent, repeatable tumour volume measurements are key to accurately calculating tumour growth and successful assessment of therapeutic efficacy. Our previous work showed that a novel 3D and thermal imaging system for measuring subcutaneous rodent tumours (BioVolume) significantly reduced inter-operator variability across three in vivo efficacy studies. Here we continue to investigate this reduction in inter-operator variability across a much larger dataset. A dataset of 5,593 inter-operator repeats and 5,073 corresponding calliper repeats was obtained from tumour scans and measurements in 22 laboratories across 238 studies with 112 users, 23 animal strains and 98 unique cell lines. The inter-operator variability of the two measurement methods was analysed using coefficient of variation (CoV), intra-class correlation (ICC) analysis, and significance testing. The 3D and thermal imaging system produced a significantly lower median CoV of 0.173 compared to a median calliper CoV of 0.205 (P value = 5.2 x 10^-9). ICC analysis further confirmed the statistical significance of these values, allowing us to conclude that this novel 3D and thermal imaging system offers a significant reduction in inter-operator variability. This has the potential to improve reproducibility of in vivo studies across a wide range of animal strains and cell lines. The effects of using a device with large inter-operator variability at critical points in the study were also investigated. At randomisation, changing the operator performing measurements resulted in 59.4% probability that a rodent would be reassigned to a different group. For measurements carried out using the imaging system, the probability that changing the operator would also result in change of a rodent’s group was much lower at 29.2%. During studies where the tumour was expected to regress, substituting an operator mid-study resulted in a tumour volume increase of approximately 500mm^3 when callipers were used for measurement. For the imaging device, substituting users did not affect the tumour regression trend, potentially removing the need for the same operator to be present for the entire study duration. The effect of swapping an operator mid-study on the drug efficacy metric AUC (Area Under the Curve) was also observed; no statistical difference in AUC was observed for both BioVolume and callipers (overlapping 95% confidence intervals).

The Effect of Tool Geometrical Parameters on Cutting Temperature Based on Deform-3D

2013 ◽  
Vol 690-693 ◽  
pp. 2554-2558
Author(s):  
Hua Jing Zhang ◽  
Zhi Tao Tang
Keyword(s):  
Finite Element ◽  
Imaging System ◽  
Cutting Temperature ◽  
Element Model ◽  
Friction Model ◽  
Geometrical Parameters ◽  
Infrared Thermal Imaging ◽  
Temperature Filed ◽  
Thermal Imaging System ◽  
Key Techniques

The finite element method was adopted to predict the cutting temperature filed of workpiece surface when machining aerospace aluminum alloy 7050-T7451. Some key techniques such as the materials flow stress behavior, the separation of the chips with the workpiece, failure and fracture criterion, the tool-chip friction model were discussed in details. To validate the finite element model, the cutting temperature field of the chip was obtained by infrared thermal imaging system. The result revealed that the prediction model is credible. Based on the model, the effects of tool geometrical parameters such as flank wear, cutting edge inclination and corner radius on cutting temperature were analyzed.

THERMAL IMAGING SYSTEM FOR CLIMATE CONTROL OF POTATO STORES

2005 ◽  
Vol 38 (1) ◽  
pp. 115-118 ◽  
Author(s):  
Klaus Gottschalk ◽  
Sabine Geyer ◽  
Hans-Jürgen Hellebrand
Keyword(s):  
Thermal Imaging ◽  
Imaging System ◽  
Climate Control ◽  
Thermal Imaging System

scholarly journals Fabrication of Silicon Window for Low-price Thermal Imaging System

2015 ◽  
Vol 24 (4) ◽  
pp. 264-269
Author(s):  
Byung Mok Sung ◽  
Dong Geon Jung ◽  
Soon Jae Bang ◽  
Sun Min Baek ◽  
Seong Ho Kong
Keyword(s):  
Thermal Imaging ◽  
Imaging System ◽  
Thermal Imaging System

scholarly journals Application of Zernike moments in computer vision problems for infrared images

2021 ◽  
Vol 310 ◽  
pp. 01002
Author(s):  
Dmitriy Otkupman ◽  
Sergey Bezdidko ◽  
Victoria Ostashenkova
Keyword(s):  
Computer Vision ◽  
Machine Vision ◽  
Thermal Imaging ◽  
Imaging System ◽  
Infrared Region ◽  
Zernike Moments ◽  
Infrared Images ◽  
Theoretical Justification ◽  
Thermal Imaging System ◽  
Binarization Method

The efficiency of using Zernike moments when working with digital images obtained in the infrared region of the spectrum is considered to improve the accuracy and speed of an autonomous thermal imaging system. The theoretical justification of the choice of Zernike moments for solving computer (machine) vision problems and the choice of a suitable threshold binarization method is given. In order to verify the adequacy and expediency of using the chosen method, practical studies were conducted on the use of Zernike methods for distorting various thermal images in shades of gray.

Design and implementation of infrared thermal imaging system based on SOPC

2021 ◽  
Vol 36 (6) ◽  
pp. 886-895
Author(s):  
Hai-lin ZHONG ◽  
◽  
Yue-tao YANG ◽  
Xin WANG ◽  
Feng CAO ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Imaging System ◽  
Infrared Thermal Imaging ◽  
Design And Implementation ◽  
Thermal Imaging System

Thermal Imaging in Medical Science

2018 ◽  
pp. 1109-1132 ◽  
Author(s):  
Nilanjan Dey ◽  
Amira S. Ashour ◽  
Afnan S. Althoupety
Keyword(s):  
Breast Cancer ◽  
Thermal Imaging ◽  
Imaging System ◽  
Medical Science ◽  
Breast Diseases ◽  
Material Surface ◽  
Processing Unit ◽  
Main Concept ◽  
Object Material ◽  
Thermal Imaging System

Thermal imaging is a non-destructive, non-contact and rapid system. It reports temperature through measuring infrared radiation emanated by an object/ material surface. Automated thermal imaging system involves thermal camera equipped with infrared detectors, signal processing unit and image acquisition system supported by computer. It is elaborated in wide domains applications. Extensive focus is directed to the thermal imaging in the medical domain especially breast cancer detection. This chapter provided the main concept and the different applications of thermal imaging. It explores and analyses several works in the light of studding the thermograph. It is an effective screening tool for breast cancer prediction. Studies justify that thermography can be considered a complementary tool to detect breast diseases. The current chapter reviews many usages and limitations of thermography in biomedical field. Extensive recommendations for future directions are summarized to provide a structured vision of breast thermography.

Dual-Bandpass Filter in Infrared Thermal Imaging System for Methane Detection

2018 ◽  
Vol 38 (12) ◽  
pp. 1231001
Author(s):  
付秀华 Fu Xiuhua ◽  
刘文奇 Liu Wenqi ◽  
尹士平 Yin Shiping ◽  
刘克武 Liu Kewu ◽  
刘冬梅 Liu Dongmei
Keyword(s):  
Thermal Imaging ◽  
Bandpass Filter ◽  
Imaging System ◽  
Infrared Thermal Imaging ◽  
Thermal Imaging System ◽  
Methane Detection

scholarly journals Exploring the Maker Culture in Chemistry: Making an Affordable Thermal Imaging System for Reaction Visualization

2020 ◽  
Vol 97 (10) ◽  
pp. 3887-3891
Author(s):  
Ronald Soong ◽  
Amy Jenne ◽  
Rajshree Ghosh Biswas ◽  
Antonio Adamo ◽  
Andre Simpson
Keyword(s):  
Thermal Imaging ◽  
Imaging System ◽  
Maker Culture ◽  
Thermal Imaging System
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