Robust license plate detection in nighttime scenes using multiple intensity IR-illuminator

Yi Ting Chen*, Jen-Hui Chuang, Wen Chih Teng, Horng Horng Lin, Hua-Tsung Chen

*此作品的通信作者

研究成果: Paper同行評審

14 引文 斯高帕斯(Scopus)

摘要

The functionality of video surveillance is significantly degraded by the low illumination and poor visibility under the nighttime environment. However, the demand for nighttime surveillance is no less than the daytime one because of the high incidence of accidents during night. The Infrared (IR) light source with fixed intensity works for only certain distance, resulting in the defect of underexposure/overexposure due to the object being too far from/close to the light source. In this paper an innovative idea is brought up that we use a multiple intensity IR-illuminator to enhance the effective distance of license plate detection. Based on the stroke width of the license ID, license plates are detected in the images under different illuminations and then the results are integrated into a synthesized high dynamic range image, in which the license plate regions and the background scene can be better visualized. Experimental results show that the proposed approach can effectively enlarge the monitored area in both depth and width, as well as enhance the security level of nighttime video surveillance.

原文American English
頁面893-898
頁數6
DOIs
出版狀態Published - 15 8月 2012
事件21st IEEE International Symposium on Industrial Electronics, ISIE 2012 - Hangzhou, China
持續時間: 28 5月 201231 5月 2012

Conference

Conference21st IEEE International Symposium on Industrial Electronics, ISIE 2012
國家/地區China
城市Hangzhou
期間28/05/1231/05/12

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