如果两个消失点并不可用，焦距不能估计自动和手动输入必须在透镜模型可以解决。

If two vanishing points are not available, focal length cannot be estimated automatically and must be entered manually before the lens model can be solved.

youdao

如果两个消失点并不可用，焦距不能估计自动和手动输入必须在透镜模型可以解决。

If two vanishing points are not available, focal length cannot be estimated automatically and must be entered manually before the lens model can be solved.

youdao