基于摄像机自标定的视频对比度能见度检测算法与实现

由于气象能见度仪应用范围有限且难以架设、现有视频检测算法对外部要求过高且容易受噪声影响，无法大范围布设。该文提出了基于摄像机自标定的视频能见度检测方法，并构建了能见度检测系统。该方法利用摄像机自标定模型、小波变换、视频对比度检测模型曲线拟合等手段，克服原有方法和算法在距离信息、目标物、噪声、稳定性等原因的缺点。其系统已在江苏1/5的高速公路上试运行，结果误差符合国际及国家相关标准。

Video Contrast Visibility Detection Algorithm and Its Implementation Based on Camera Self-calibration

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.