构像畸变模型参数对普通数码影像DLT算法精度影响

The effect of conformation distortion model on direct liner transformation (DLT) based on general digital photos

在不同的构像畸变模型条件下,利用附加条件的DLT算法处理普通数码影像所得到的影像精度是不同的。控制点分布均匀时,进行试验,结果表明,在较少控制点情况下,可考虑引入3个畸变系数k1、P1、P2来提高解算精度;而当控制点数达到一定数量时,可考虑引入3个畸变系数k1、p1、p2或5个畸变系数k1、k2、k3、p1、p2以提高解算精度。

The paper applies DLT adding condition equations to common digital photos for the different conformation distortion model. The results show that under less control point circumstance, 3 mutation coefficients k1 , 92 , 92 should be considered to improve the solution calculate accuracy. But when the control point attains certain quantity, 3 to 5 mutation coefficients k1 , k2, k3 , P1, P2 should be considered to improve the accuracy.