Wide-angle lens for miniature capsule endoscope

2006 ◽  
Author(s):  
Mang Ou-Yang ◽  
Yung-Lin Chen ◽  
Hsin-Hung Lee ◽  
Shih-chieh LU ◽  
Hsien-Ming Wu
Keyword(s):  
Capsule Endoscope ◽  
Wide Angle ◽  
Wide Angle Lens

Developmental Risk Through a Wide-Angle Lens

1987 ◽  
Vol 32 (1) ◽  
pp. 54-55
Author(s):  
Jack P. Shonkoff
Keyword(s):  
Wide Angle ◽  
Developmental Risk ◽  
Wide Angle Lens

Fisheye Lens Distortion Calibration Based on the Lens Charactetic Curves

2014 ◽  
Vol 519-520 ◽  
pp. 636-639
Author(s):  
Bao Long Zhang ◽  
Shao Jing Zhang ◽  
Wei Qi Ding ◽  
Hui Shuang Shi
Keyword(s):  
Optical System ◽  
Characteristic Curve ◽  
Calibration Method ◽  
Lens Distortion ◽  
Wide Angle ◽  
Forming Process ◽  
Fisheye Lens ◽  
Large Scope ◽  
Wide Angle Lens ◽  
Barrel Distortion

The fisheye lens is a kind of ultra wide angle lens, which can produce a big super-wide-angle lens distortion. In order to cover a large scope of light, barrel distortion is artificially added to the optical system. However, in some cases this distortion is not allowed, then it requires calibrations of those distortions. Most of the traditional distortion calibration method uses target plane calibration to do it. This paper discusses the way of design fisheye lens, through which we can know the forming process of distortion clearly. Based on this paper, a simple and effective calibration method can be understood. Different from common camera calibration method, the proposed calibration method can avoid the error occurring in the process of calibrating test, that directly use the lens’ characteristic curve. Through multiple sets of experimental verifications, this method is effective and feasible.

Evaluating the Impact of Wide-Angle Lens Distortion on Learning-based Depth Estimation

2021 ◽  
Author(s):  
Julie Buquet ◽  
Jinsong Zhang ◽  
Patrice Roulet ◽  
Simon Thibault ◽  
Jean-Francois Lalonde
Keyword(s):  
Depth Estimation ◽  
Lens Distortion ◽  
Wide Angle ◽  
Wide Angle Lens ◽  
The Impact
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