摘要
D.L.T法是一种能够拍摄并解析在三维空间内运动幅度很大的技术动作的摄影技术。用两台摄影机从不同角度进行拍摄,根据两台摄影机拍摄的底片的二维坐标求出拍摄对象的三维空间坐标。这种线性变换是根据对标定框架摄影,然后求出摄影机系数来实现的。标定框架上至少有六个已知坐标的点,运用最小二乘法可得到十一元一次方程组,对其求解得到十一个摄影机系数,之后再求出点的三维坐标。
D.L.T. is a kind of stereoscopic cameral technology capable of shooting and analysing largeamplitude technical movements of three dimensions. The three-dimensional coordinate of the photographed object can be worked out according to the plane coordinates on the photographic plates produced by two cameras which are used for shooting from various angles. Such linear transformation is realized by photographing the demarcated frame and then evaluating the camera constants. There are at least six points on the known coordinate on the demarcated frame. By applying the least square method, it is possible to obtain an eleven-element linear equation group, the solution of which will produce eleven camera constants, whereby the three-dimensional coordinate of a point can be determined.
出处
《体育科学》
1988年第3期62-64,96,共4页
China Sport Science
