太阳影子定位问题研究

Research on Location of Straight Pole Through Sundial

太阳影子定位是通过分析影子变化来确定视频拍摄的时间和地点,是视频分析研究的重要内容.论文通过太阳高度角公式建立直杆影子长度的数学模型;对于在已知不同时间的直杆影子的坐标情况下,通过非线性最小二乘拟合的方法确定直杆的坐标;对于只有直杆影子坐标情况下,通过函数拟合并运用遗传算法确定了直杆的坐标以及时间;作为应用计算了给定视频中直杆的位置.

Using formular of solar attitude,the mathematical model of length of straight pole was set up.When the time of photograph given,the coordinate of the straight pole was located by nonlinear least squares fitting method.When the time of photograph not given,the coordinate of the straight pole and time of photograph were determined through genetic algorithm and nonlinear least squares fitting method.As application,the location of straight pole in a video was determined by video processing.