Correction procedure for a tomographic optical setup employing imaging fiber bundles and&#x00A0;intensified cameras

Marcel N. Müller; Marcel N. Müller; Florian J. Bauer; Florian J. Bauer; Florian J. Bauer; Weiwei Cai; Weiwei Cai; Franz J. T. Huber; Franz J. T. Huber; Franz J. T. Huber; Stefan Will; Stefan Will; Stefan Will

doi:10.1364/AO.507266

Applied Optics
Vol. 63,
Issue 1,
pp. 56-65
(2024)
•https://doi.org/10.1364/AO.507266

Correction procedure for a tomographic optical setup employing imaging fiber bundles and intensified cameras

Marcel N. Müller, Florian J. Bauer, Weiwei Cai, Franz J. T. Huber, and Stefan Will

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
Marcel N. Müller, Florian J. Bauer, Weiwei Cai, Franz J. T. Huber, and Stefan Will, "Correction procedure for a tomographic optical setup employing imaging fiber bundles and intensified cameras," Appl. Opt. 63, 56-65 (2024)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article

Check for updates

Abstract

For reliable tomographic measurements the underlying 2D images from different viewing angles must be matched in terms of signal detection characteristics. Non-linearity effects introduced by intensified cameras and spatial intensity variations induced from inhomogeneous transmission of the optical setup can lead, if not corrected, to a biased tomographic reconstruction result. This paper presents a complete correction procedure consisting of a combination of a non-linearity and flatfield correction for a tomographic optical setup employing imaging fiber bundles and four intensified cameras. Influencing parameters on the camera non-linearity are investigated and discussed. The correction procedure is applied to 3D temperature measurements by two-color pyrometry and compared to results without correction. The present paper may serve as a guideline for an appropriate correction procedure for any type of measurement involving optical tomography and intensified cameras.

Full Article | PDF Article

More Like This

Are camera, projector, and camera–projector calibrations different?

Rigoberto Juarez-Salazar, Sofia Esquivel-Hernandez, and Victor H. Diaz-Ramirez
Appl. Opt. 62(22) 5999-6006 (2023)

Single-sensor filter-intensified fiber optic 4D tomographic CH* chemiluminesence flame measurements

Cal Rising, Jonathan Reyes, Darin Knaus, Danny Micka, Brynmor Davis, Vincent Belovich, and Kareem Ahmed
Appl. Opt. 60(22) 6337-6341 (2021)

Arrays of glass wedges for multi-dimensional optical diagnostics

Daniel R. Richardson
Appl. Opt. 62(30) 8034-8041 (2023)

Previous Article Next Article

Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (4)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Setting	Camera	Gain	Frame Rate	Aperture
1	Cam 1 & Cam 2	75%	1/3 Hz	$f / 5.6$
	Cam 3 & Cam 4			$f / 8$
2	Cam 1 & Cam 2	75%	1/3 Hz	$f / 3.5$
	Cam 3 & Cam 4			$f / 4$
3^a	Cam 1 & Cam 2	75%	20/3 Hz	$f / 5.6$
	Cam 3 & Cam 4			$f / 8$
4^a	Cam 1 & Cam 2	75%	20/3 Hz	$f / 3.5$
	Cam 3 & Cam 4			$f / 4$
5	Cam 1 & Cam 2	90%	1/3 Hz	$f / 5.6$
	Cam 3 & Cam 4			$f / 8$
6^a	Cam 1 & Cam 2	90%	20/3 Hz	$f / 5.6$
	Cam 3 & Cam 4			$f / 8$

Camera	Number of Pixels	Superpixel Size	Number of Superpixels
1	$1024 \times 1280$	$64 \times 64$	$16 \times 20$
2	$2160 \times 2560$	$135 \times 128$	$16 \times 20$
3	$1024 \times 1024$	$64 \times 64$	$16 \times 16$
4	$1024 \times 1280$	$64 \times 64$	$16 \times 20$

	HAB 10 mm			HAB 20 mm
	Min.	Avg.	Max.	Min.	Avg.	Max.
$T_{C a s e 1} - T_{C a s e 3}$	29 K	31 K	35 K	3 K	31 K	42 K
	HAB 30 mm			HAB 40 mm
	Min.	Avg.	Max.	Min.	Avg.	Max.
$T_{C a s e 1} - T_{C a s e 3}$	1 K	33 K	52 K	−22 K	43 K	55 K

	$z / d = 30$			$z / d = 50$
	Min.	Avg.	Max.	Min.	Avg.	Max.
$T_{C a s e 1} - T_{C a s e 2}$	−52 K	1 K	38 K	−2 K	3 K	8 K
$T_{C a s e 1} - T_{C a s e 3}$	6 K	54 K	104 K	56 K	74 K	87 K
$T_{C a s e 1} - T_{C a s e 4}$	0 K	51 K	85 K	53 K	75 K	92 K

Setting	Camera	Gain	Frame Rate	Aperture
1	Cam 1 & Cam 2	75%	1/3 Hz	$f / 5.6$
	Cam 3 & Cam 4			$f / 8$
2	Cam 1 & Cam 2	75%	1/3 Hz	$f / 3.5$
	Cam 3 & Cam 4			$f / 4$
3^a	Cam 1 & Cam 2	75%	20/3 Hz	$f / 5.6$
	Cam 3 & Cam 4			$f / 8$
4^a	Cam 1 & Cam 2	75%	20/3 Hz	$f / 3.5$
	Cam 3 & Cam 4			$f / 4$
5	Cam 1 & Cam 2	90%	1/3 Hz	$f / 5.6$
	Cam 3 & Cam 4			$f / 8$
6^a	Cam 1 & Cam 2	90%	20/3 Hz	$f / 5.6$
	Cam 3 & Cam 4			$f / 8$

Abstract

Data availability

Cited By

Figures (11)

Tables (4)

Applied Optics