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° horizontal and a 126.94° 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.
| Original language | English |
|---|---|
| Pages (from-to) | 336-343 |
| Number of pages | 8 |
| Journal | Current Optics and Photonics |
| Volume | 1 |
| Issue number | 4 |
| DOIs | |
| State | Published - Aug 2017 |
Keywords
- Catadioptric image acquisition
- Geometrical optics
- Hyperbolic mirror
- Image restoration
- Wide FOV