基于视频数据处理的太阳影子定位研究

Research on sun shadow location based on video data processing

针对太阳影子定位技术问题,使用二次多项式拟合、联立多元方程组求解等方法,利用EXCEL、Matlab、LINGO等软件进行编程求解,分别构建直杆影长变化模型、太阳影子定位模型、太阳影子定时定位模型等,从而得到如下结论:影子长度呈先递减后递增的变化趋势,且在当地时间正午12:00影子长度最短;在其他条件一定的情况下,影子长度与直杆长度、太阳直射点的纬度、直杆所在地纬度均呈正相关关系等;并以视频为例,根据已建立的数学模型,确定待估视频地点.

In order to solve the problem of sun shadow localization technique,the method of solving the problem was solved by using the method of EXCEL,Matlab,LINGO and so on.The model of long shadow change,the sun shadow localization model,the shadow length of the model,etc.,to get the following conclusions： the shadow length was decreasing first and the trend of increasing,and at 12 noon local time the shortest length of the shadow; in other conditions certain circumstances,the shadow length and straight length,point latitude,straight rod latitude were positive correlation and so on. At the same time,the time series regression model was improved by considering the influence of the time variation factor in the change model. For simplicity,the algorithm in the sun shadow localization model was improved.