Geometric calibration of focused light field camera for 3-D flame temperature measurement

Jun Sun; Chuanlong Xu; Biao Zhang; Shimin Wang; Md Moinul Hossain; Hong Qi; Heping Tan

doi:10.1109/I2MTC.2016.7520580

Geometric calibration of focused light field camera for 3-D flame temperature measurement

Jun Sun, Chuanlong Xu, Biao Zhang, Shimin Wang, Md Moinul Hossain, Hong Qi, Heping Tan

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

8 Citations (Scopus)

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Abstract

Focused light field camera can be used to measure three-dimensional (3-D) temperature field of a flame because of its ability to record intensity and direction information of each ray from flame simultaneously. This work aims to develop a suitable geometric calibration method of focused light field camera for 3-D flame temperature measurement. A modified method based on Zhang's camera calibration is developed to calibrate the camera and the measurement system. A single focused light-field camera is used to capture images of bespoke calibration board for calibration in this study. Geometric parameters including intrinsic (i.e., camera parameters) and extrinsic (i.e., camera connecting with the calibration board) of the focused light field camera are calibrated to trace the ray projecting onto each pixel on CCD (charge-coupled device) sensor. Instead of using line features, corner point features are directly utilized for the calibration. The characteristics of focused light field camera including one 3-D point corresponding to several image points and matching main lens and microlens f-numbers, are used for calibration. Results with a focused light field camera are presented and discussed. Preliminary 3-D temperature distribution of a flame is also investigated and presented.

Original language	English
Title of host publication	2016 IEEE International Instrumentation and Measurement Technology Conference
Place of Publication	Piscataway, N.J.
Number of pages	6
DOIs	https://doi.org/10.1109/I2MTC.2016.7520580
Publication status	Published - 22 Jul 2016
Event	2016 IEEE International Instrumentation and Measurement Technology Conference - Taipei International Convention Center, Taipei, Taiwan Duration: 23 May 2016 → 26 May 2016 Conference number: 37481 http://imtc2016.ieee-ims.org/

Conference

Conference	2016 IEEE International Instrumentation and Measurement Technology Conference
Abbreviated title	I2MTC 2016
Country/Territory	Taiwan
City	Taipei
Period	23/05/16 → 26/05/16
Internet address	http://imtc2016.ieee-ims.org/

Keywords

camera calibration
focused light field camera
ray tracing
Zhang's calibration method
temperature mesurement
ccd image sensors

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Sun-etal-I2MTC-2016-Focused-light-field-camera-for-3-D-flame-temperature-measurementAccepted author manuscript, 916 KB

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title = "Geometric calibration of focused light field camera for 3-D flame temperature measurement",

abstract = "Focused light field camera can be used to measure three-dimensional (3-D) temperature field of a flame because of its ability to record intensity and direction information of each ray from flame simultaneously. This work aims to develop a suitable geometric calibration method of focused light field camera for 3-D flame temperature measurement. A modified method based on Zhang's camera calibration is developed to calibrate the camera and the measurement system. A single focused light-field camera is used to capture images of bespoke calibration board for calibration in this study. Geometric parameters including intrinsic (i.e., camera parameters) and extrinsic (i.e., camera connecting with the calibration board) of the focused light field camera are calibrated to trace the ray projecting onto each pixel on CCD (charge-coupled device) sensor. Instead of using line features, corner point features are directly utilized for the calibration. The characteristics of focused light field camera including one 3-D point corresponding to several image points and matching main lens and microlens f-numbers, are used for calibration. Results with a focused light field camera are presented and discussed. Preliminary 3-D temperature distribution of a flame is also investigated and presented.",

keywords = "camera calibration, focused light field camera, ray tracing, Zhang's calibration method, temperature mesurement, ccd image sensors",

author = "Jun Sun and Chuanlong Xu and Biao Zhang and Shimin Wang and Hossain, {Md Moinul} and Hong Qi and Heping Tan",

note = "{\textcopyright} 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.; 2016 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2016 ; Conference date: 23-05-2016 Through 26-05-2016",

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Sun, J, Xu, C, Zhang, B, Wang, S, Hossain, MM, Qi, H & Tan, H 2016, Geometric calibration of focused light field camera for 3-D flame temperature measurement. in 2016 IEEE International Instrumentation and Measurement Technology Conference. Piscataway, N.J., 2016 IEEE International Instrumentation and Measurement Technology Conference, Taipei, Taiwan, 23/05/16. https://doi.org/10.1109/I2MTC.2016.7520580

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AU - Qi, Hong

AU - Tan, Heping

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N2 - Focused light field camera can be used to measure three-dimensional (3-D) temperature field of a flame because of its ability to record intensity and direction information of each ray from flame simultaneously. This work aims to develop a suitable geometric calibration method of focused light field camera for 3-D flame temperature measurement. A modified method based on Zhang's camera calibration is developed to calibrate the camera and the measurement system. A single focused light-field camera is used to capture images of bespoke calibration board for calibration in this study. Geometric parameters including intrinsic (i.e., camera parameters) and extrinsic (i.e., camera connecting with the calibration board) of the focused light field camera are calibrated to trace the ray projecting onto each pixel on CCD (charge-coupled device) sensor. Instead of using line features, corner point features are directly utilized for the calibration. The characteristics of focused light field camera including one 3-D point corresponding to several image points and matching main lens and microlens f-numbers, are used for calibration. Results with a focused light field camera are presented and discussed. Preliminary 3-D temperature distribution of a flame is also investigated and presented.

AB - Focused light field camera can be used to measure three-dimensional (3-D) temperature field of a flame because of its ability to record intensity and direction information of each ray from flame simultaneously. This work aims to develop a suitable geometric calibration method of focused light field camera for 3-D flame temperature measurement. A modified method based on Zhang's camera calibration is developed to calibrate the camera and the measurement system. A single focused light-field camera is used to capture images of bespoke calibration board for calibration in this study. Geometric parameters including intrinsic (i.e., camera parameters) and extrinsic (i.e., camera connecting with the calibration board) of the focused light field camera are calibrated to trace the ray projecting onto each pixel on CCD (charge-coupled device) sensor. Instead of using line features, corner point features are directly utilized for the calibration. The characteristics of focused light field camera including one 3-D point corresponding to several image points and matching main lens and microlens f-numbers, are used for calibration. Results with a focused light field camera are presented and discussed. Preliminary 3-D temperature distribution of a flame is also investigated and presented.

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ER -

Geometric calibration of focused light field camera for 3-D flame temperature measurement

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