License plate photo recognition technology based on micro-nano filter
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Release time:2023-09-14 Journal:Proc. SPIE Key Words:micro-nano filter; image processing; license plate recognition Abstract:In the process of the license plate photo recognition process, light and external environmentare important factors for the clarity of the photo result. We first add a 400nm filter in front ofthe camera to carry out the experiment, take pictures with ultraviolet rays light and withoutultraviolet rays light source irradiation, then add a 390nm filter in front of the camera toperform the same experiment for comparison. Perform comparative analysis and imageprocessing on the experimental shooting results. First, it can be seen from the comparison ofthe shooting results that the clarity and recognition of the image under the action of the400nm filter are significantly improved compared with that of the 390nm filter. Second, theimage processing is used to analyze the results, which can eff ectively identify the license plateinformation. Finally, the license plate is irradiated with micro-nano filter and ultraviolet lightsource instead of the monitor fill light, so the strong light stimulation to the driver's eyes isavoided, thereby alleviating the short-term `light blindness' phenomenon of the human eyesand reducing the hidden safety hazards when driving. Note:Journal: AOPC 2020: Optical Sensing and Imaging Technology
Volume: 11567
DOI: 10.1117/12.2580091
Article Number: 1156735
Book Series: Proceedings of SPIE
Document Type: Proceedings Paper
Conference: Applied Optics and Photonics China (AOPC) Conference - Optical Sensing andImaging Technology
Location: Xiamen, PEOPLES R CHINA
Date: AUG 25-27, 2020
Published: 2020
Indexed: 2021-06-01
ISSN: 0277-786X
eISSN: 1996-756X Co-author:Jingyue Fang, Xiaoli Xie, Guangyi Xiao, Jianping Zeng First Author:Ziling Chen Indexed by:Essay collection Document Code:1156735 Discipline:Natural Science First-Level Discipline:Physics Document Type:C Volume:11567 ISSN No.:0277-786X Translation or Not:no Date of Publication:2020-11-05 Included Journals:SCI -
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