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| Video Contrast Visibility Detection Algorithm and Its Implementation Based on Camera Self-calibration |
| Chen Zhao-zheng Chen Qi-mei |
| Institute of Communication Technology, Nanjing University, Nanjing 210093, China |
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Abstract Because trandition meteorological sensor’s range is limited and hard to be erected, video detections require good external conditon and are easliy effected by nosie. A new method of detection of visibility is proposed based on camera self-calibration. And a system of visibility detection is constructed. The camera self-calibration, wavelet transform, video contrast detecting model, curve fitting is used to overcome disadvantages of tradition detections algorithms at distance, targets, noise and stability. Now the system has been used on 1/5 of Jiangsu’s high-ways. The errors of result conform to national and foreign standards.
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Received: 22 December 2009
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Corresponding Authors:
Chen Zhao-zheng
E-mail: czz05g@yahoo.com.cn
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2010, Vol. 32 
