Effective segmentation method of target based on polarization-modulated 3D imaging system

doi:10.1117/12.2557409

	Effective segmentation method of target based on polarization-modulated 3D imaging system
	Wang, Shengjie 2,3; Liu, Bo 2,3; Lv, Shenglin 1
	2020-07-12
会议日期	October 26, 2019 - October 28, 2019
会议地点	Beijing, China
卷号	11434
DOI	10.1117/12.2557409
页码	114341M
英文摘要	To implement Real-time segmentation for polarization-modulated 3D imaging system, an efficient segmentation method for multi-dimensional information fusion is proposed in this paper. Conventional 3D imaging Lidar systems use an avalanche photodiode (APD) array detector to measure time-of-flight of each pixel in the scene. Here we propose and experimentally demonstrate a super-resolution 3D imaging framework based on a new imaging sensor EMCCD (Electron Multiplying Charge Coupled Device). Due to its low bandwidth characteristics, the electro-optic modulators are applied to implement temporal (range) resolution, and meanwhile act as a fast shutter with sub-nanosecond-level. Consequently, rangegated 3D imaging can be achieved to improve the signal-to-noise ratio (SNR) performance in our framework. With dual EMCCDs structure, the depth map and intensity image can be reconstructed from adding the two modulated images. The iterative threshold algorithm method is applied to the target segmentation of high-resolution images, and image morphological erosion algorithm are used to improve the segmentation accuracy. The target's pixel coordinate position obtained by image segmentation is mapped to 3D point cloud data to get the segmented target point cloud data. Experimental results show that the system can achieve high-precision flash imaging. Meanwhile, the segmentation method has a great improvement in time efficiency compared with traditional clustering algorithm, and can reduce the under-segmentation error rate. Ultimately, we found that the imaging method showed outstanding performance on highprecision imaging with an error less than 0.1m in a wide field-of-view of 0.9mrad. And the segmentation of target takes only 560ms. © 2020 SPIE.
会议录	Proceedings of SPIE 11434 - 2019 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments
文献子类	会议论文
语种	英语
ISSN号	0277-786X
内容类型	会议论文
源URL	[http://ir.ioe.ac.cn/handle/181551/9896]
专题	空天部
作者单位	1.Fifth Military Representative Office, Air Force Armament Department in Chengdu, No. 7, section 4, RenMin south road, Chengdu; 610209, China 2.Institute of Optics and Electronics, Chinese Academy of Sciences, No. 1 photoelectric avenue, Chengdu; 610209, China; 3.Key Laboratory of Space Optoelectronic Precision Measurement Technology, CAS, China;
推荐引用方式 GB/T 7714	Wang, Shengjie,Liu, Bo,Lv, Shenglin. Effective segmentation method of target based on polarization-modulated 3D imaging system[C]. 见:. Beijing, China. October 26, 2019 - October 28, 2019.