[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.3807/COPP.2017.1.4.336

Wide Field-of-View Imaging Using a Combined Hyperbolic Mirror

Yi, Sooyeong (Department of Electrical and Information Engineering, Seoul National University of Science and Technology)
Ko, Youngjun (Department of Electrical and Information Engineering, Seoul National University of Science and Technology)

Publication Information

Current Optics and Photonics / v.1, no.4, 2017 , pp. 336-343 More about this Journal

Abstract

A wide field-of-view (FOV) image contains more visual information than a conventional image. This study proposes a new type of hyperbolic mirror for wide FOV image acquisition. The proposed mirror consists of a hyperbolic cylindrical section and a bowl-shaped hyperbolic omnidirectional section. Using an imaging system with this mirror, it is possible to achieve a $213.8^{\circ}$ horizontal and a $126.94^{\circ}$ vertical maximum FOV. Parameters of each section of the mirror are designed to be continuous at the junction of the two parts, and the resultant image is seamless. The image-acquisition model is obtained using ray-tracing optics. To rectify the geometrical distortion of the original image due to the mirror, an image-restoration algorithm based on conformal projection is presented in this study. The performance of the proposed imaging system with the hyperbolic mirror and its image-restoration algorithm are verified by experiments.

Keywords

Catadioptric image acquisition; Hyperbolic mirror; Wide FOV; Geometrical optics; Image restoration;

Citations & Related Records

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