Dynamic Glare Measurement Method Based on Threshold Increment
WANG Jia-ming1,QIAO Wei-dong1,ZHANG Heng1,LI Yi2
1. School of Mechanical & Precision Instrument Engineering, Xian University of Technology, Xi’an,Shaanxi 710048, China
2. Optical Metrology and Test Center, Shaanxi Institute of
Metrology Science, Xi’an, Shaanxi 710065, China
Abstract：By analyzing the evaluation criteria of threshold increment, it is concluded that the basic components affecting the change are brightness information and position information. A dynamic glare measurement method based on threshold increment is proposed, and an experimental measurement system is established. The system uses image collector to obtain environmental image information, obtains image brightness information and three-dimensional coordinate information through image brightness calibration method and binocular camera visual characteristics, and realizes the calculation of single frame image threshold increment. Finally, the detection frequency of the system is estimated according to the system operation time, and the estimated frequency is verified in practice. The experimental results show that the detection frequency of the dynamic glare measurement system can reach 7.67Hz. Compared with the traditional detection methods, this method has the characteristics of high efficiency, dynamic and intelligent, and can meet the actual needs of threshold increment measurement in dynamic scenes.
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2022, Vol. 43 
