3-D flame chemiluminescence tomography imaging under limited projection angle conditions: constraints and improving

Yanting Cheng; Feng Chi; Jianjun Wang; Qiang Jing; Rujun Song

doi:10.1117/12.2548769

12 March 2020 3-D flame chemiluminescence tomography imaging under limited projection angle conditions: constraints and improving

Yanting Cheng, Feng Chi, Jianjun Wang, Qiang Jing, Rujun Song

Author Affiliations +

Proceedings Volume 11434, 2019 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 114340Z (2020) https://doi.org/10.1117/12.2548769
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

The main challenge and limitation of combustion diagnosis technique lies in the volumetric/spatial resolution. Frequently reported technique widely use laser bean scanning to get inner knowledge of combustion, however due to the line-of-sight nature, spatial resolution along the “path” is lacked. With the ability of 3-D tomography detection, CTC technique (computed tomography of chemiluminescence) shows advantage over other techniques; but not yet widely used in combustion science study. In CTC measurement, “dense projection” is required to make satisfying tomography reconstruction, but this is practically hard to meet for high cost and spatial limitation. At sparse projection conditions, tomography reconstruction is distorted with the appearance of geometric blur. The reason of occurrence of blur is analyzed in this paper, and an improved method for tomography reconstruction is proposed. Test results show that blur distortion could be effectively eliminated using the improved method at sparse projection conditions. Other factors and constraints that have influence on flame tomography measurement are discussed in this paper, and quantitative evaluations were made through tests.

Citation Download Citation

Yanting Cheng, Feng Chi, Jianjun Wang, Qiang Jing, and Rujun Song "3-D flame chemiluminescence tomography imaging under limited projection angle conditions: constraints and improving", Proc. SPIE 11434, 2019 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 114340Z (12 March 2020); https://doi.org/10.1117/12.2548769

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available