By means of two images of the same pair of parallel lines that are vertical and horizontal respectively, the scale factor can be calculated.

该方法通过同一对平行边缘在垂直和水平方向的两幅图像，计算水平比例因子；

youdao

There is a linear relationship between differential reflectivity ZDR and the shape factor defined as the ratio of the horizontal scale to the vertical scale of a particle.

球锥扁椭球形冰粒的差反射率因子与粒子形状参数水平-垂直尺度比呈很好的线性正相关。

youdao