基于视频图像的能见度计算方法研究

为了更加方便快捷地获取能见度并且实现对能见度的长期观测, 基于暗通道先验的理论基础对于视频图像的 能见度提取方法进行了分析和研究。通过对观测获得的全天不同时刻的目标图像进行亮度分析从而得到对应的大气 透过率和能见度, 并进一步将能见度提取结果与相同条件下实测激光雷达能见度数据进行了对比。研究结果表明, 提 取的能见度结果与实测数据吻合度较高, 相关系数达到 0.96616。

Research on Visibility Calculation Method Based on Video Image

In order to obtain the visibility more conveniently and quickly and realize the long-term observation of the visibility,the visibility extraction method of the video image based on the theory of the dark channel prior is analyzed and studied.Through the brightness analysis on the target images observed at different times of the day,the corresponding atmospheric transmittance and visibility can be obtained.Furthermore,the visibility extraction results are compared with the measured lidar visibility data under the same conditions.The results show that the extracted visibility results are in good agreement with the measured data,and the correlation coefficient reaches 0.96616.