Opt Lett. 2021 Nov 15;46(22):5611-5614. doi: 10.1364/OL.440660.
Ghost imaging (GI) is an unconventional imaging method that reconstructs the object information via light-intensity correlation measurements. However, at present, the field of view (FOV) of this method is limited to the illumination range of light patterns. To enlarge the FOV of GI efficiently, we propose an omnidirectional GI system (OGIS) that can achieve a 360° omnidirectional FOV only via the addition of a curved mirror. The OGIS features retina-like annular patterns designed as a log-polar structure and can obtain the undistorted unwrapping-free panoramic images with uniform resolution. This research presents a new, to the best of our knowledge, perspective for the applications of GI, such as pipeline detection, a panoramic situation awareness for autonomous vehicles.
鬼成像（GI）是一种通过光强相关测量来重建物体信息的非传统成像方法。然而，目前该方法的视场（FOV）仅限于光图案的照明范围。为了有效地扩大 GI 的 FOV，我们提出了一种全向 GI 系统（OGIS），只需添加一个曲面镜即可实现 360°全向 FOV。OGIS 采用设计为对数极坐标结构的类似视网膜的环形图案，可以获得具有均匀分辨率的无扭曲、无缠绕的全景图像。这项研究为 GI 的应用提供了一个新的视角，例如管道检测、自动驾驶车辆的全景态势感知。
