光学学报, 2014, 34 (5): 0511006, 网络出版: 2014-04-22
基于投影仪的“街角成像”和穿透散射介质成像
Looking Around Corners and Through Turbid Media with Projector
摘要
散射介质对传统成像的影响非常大,散射严重时甚至使传统成像方式完全失效。如何在存在散射介质的情况下得到高分辨率的图像是人们一直关注的技术。将投影仪应用于关联成像(GI),可以在实验室内实现“街角成像”,即利用墙面的漫反射对墙角另一侧无法直接成像的物体进行成像,并在此基础上实现了对隐藏在散射介质后的物体进行成像。该成像方案省去了传统关联成像系统中的参考臂的测量,使用一个无空间分辨能力的桶探测器即可实现。对比实验结果与传统方式得到的结果并分析实验的分辨率以及影响因素,证明了使用投影仪等普通光源在存在散射介质的情况下成像的可行性。
Abstract
Turbid media has a great influence on traditional imaging, which may even result in complete failure when scattering becomes serious enough. It has attracted extensive attentions in practical applications to obtain high resolving images through turbid media. A projector is applied in the ghost imaging (GI) experiment, which achieves the goals of both looking around corners and imaging through turbid media. The images of objects can be obtained with a bucket detector which has no spatial resolution. The experiment results with that of the traditional imaging are compared and the influence factors on resolution are analyzed. It is feasible to image around corners through turbid media by means of simple illuminants, such as projectors.
金浩强, 石剑虹, 彭进业, 曾贵华. 基于投影仪的“街角成像”和穿透散射介质成像[J]. 光学学报, 2014, 34(5): 0511006. Jin Haoqiang, Shi Jianhong, Peng Jinye, Zeng Guihua. Looking Around Corners and Through Turbid Media with Projector[J]. Acta Optica Sinica, 2014, 34(5): 0511006.