Design and assessment of a 360° panoramic and high-performance capture system with two tiled catadioptric imaging channels

Weitao Song; Xuming Liu; Peng Lu; Yetao Huang; Dongdong Weng; Yuanjin Zheng; Yue Liu; Yongtian Wang

doi:10.1364/AO.57.003429

Applied Optics
Vol. 57,
Issue 13,
pp. 3429-3437
(2018)
•https://doi.org/10.1364/AO.57.003429

Design and assessment of a 360° panoramic and high-performance capture system with two tiled catadioptric imaging channels

Weitao Song, Xuming Liu, Peng Lu, Yetao Huang, Dongdong Weng, Yuanjin Zheng, Yue Liu, and Yongtian Wang

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Weitao Song, Xuming Liu, Peng Lu, Yetao Huang, Dongdong Weng, Yuanjin Zheng, Yue Liu, and Yongtian Wang, "Design and assessment of a 360° panoramic and high-performance capture system with two tiled catadioptric imaging channels," Appl. Opt. 57, 3429-3437 (2018)

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Abstract

It has always been a challenge to obtain a 360° panoramic imaging system with a high-resolution and non-visible seam. In this study, a 360° panoramic and high-performance system has been developed based on two tiled imaging channels with a field of view of 190° and $F / #$ of 2.0. In this study, some issues regarding 360° panoramic tiled methods, such as relative illuminance and ghost images, were analyzed in detail and taken into consideration during the design procedure. In the final design, the stop has been fulfilled for each field angle, and the ghost images have also been well optimized. A proof-of-concept prototype producing a high-performance 360° panoramic video has been developed.

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Supplementary Material (1)

Name	Description
Visualization 1	Stitched video produced by two imaging channels through the developed prototype after calibration.

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	Single Display Channel
Sensor
Diagonal size	1/2.3 in. (7.77 mm)
Active display area	$6.206 mm \times 4.679 mm$
Resolution	$4768 (H) \times 3516 (V) pixels$
Imaging system
Effective focal length	1.43 mm
f/#	2.0
Number of optical elements	$(7 lens + 1 prism) \times 2$
Wavelength	423–660 nm
Field of view (FOV)	$190 ° \times 2$
MAX image height	$Ø 4.4 mm$
Total optical length	27.0 mm
Length of two vertex	24.0 mm
Performances
Vignetting	No vignetting in the whole field
$f - θ$ Distortion	$< 7.1 %$

Tolerance Item	Value
Surface radius(fringes)	3
Surface irreg. (fringes)	1
Surface decenter (mm)	$\pm 0.01$
Element decenter(mm)	$\pm 0.01$
Thickness (mm)	$\pm 0.02$
Tilt (′)	$\pm 3$
Glass material (nd, vd)	0.0005, 0.3%

	Single Display Channel
Sensor
Diagonal size	1/2.3 in. (7.77 mm)
Active display area	$6.206 mm \times 4.679 mm$
Resolution	$4768 (H) \times 3516 (V) pixels$
Imaging system
Effective focal length	1.43 mm
f/#	2.0
Number of optical elements	$(7 lens + 1 prism) \times 2$
Wavelength	423–660 nm
Field of view (FOV)	$190 ° \times 2$
MAX image height	$Ø 4.4 mm$
Total optical length	27.0 mm
Length of two vertex	24.0 mm
Performances
Vignetting	No vignetting in the whole field
$f - θ$ Distortion	$< 7.1 %$

Tolerance Item	Value
Surface radius(fringes)	3
Surface irreg. (fringes)	1
Surface decenter (mm)	$\pm 0.01$
Element decenter(mm)	$\pm 0.01$
Thickness (mm)	$\pm 0.02$
Tilt (′)	$\pm 3$
Glass material (nd, vd)	0.0005, 0.3%

Abstract

Supplementary Material (1)

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Figures (12)

Tables (2)

Equations (13)

Applied Optics