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http://dx.doi.org/10.3807/COPP.2019.3.4.329

Compact Catadioptric Wide Imaging with Secondary Planar Mirror  

Ko, Young-Jun (Department of Electrical and Information Engineering, Seoul National University of Science and Technology)
Yi, Soo-Yeong (Department of Electrical and Information Engineering, Seoul National University of Science and Technology)
Publication Information
Current Optics and Photonics / v.3, no.4, 2019 , pp. 329-335 More about this Journal
Abstract
Wide FOV imaging systems are important for acquiring rich visual information. A conventional catadioptric imaging system deploys a camera in front of a curved mirror to acquire a wide FOV image. This is a cumbersome setup and causes unnecessary occlusions in the acquired image. In order to reduce both the burden of the camera deployment and the occlusions in the images, this study uses a secondary planar mirror in the catadioptric imaging system. A compact design of the catadioptric imaging system and a condition for the position of the secondary planar mirror to satisfy the central imaging are presented. The image acquisition model of the catadioptric imaging system with a secondary planar mirror is discussed based on the principles of geometric optics in this study. As a backward mapping, the acquired image is restored to a distortion-free image in the experiments.
Keywords
Catadioptric system; Wide FOV image; Geometric optics; Hyperbolic mirror; Central imaging;
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