这个过程可能很乏味，因为你要先建立平面，还不得不去旋转摄像机，并调节焦距以得到好的匹配效果。
This can be a tedious process because the first time you create the plane, you have to rotate the camera and change the focal length at the same time to get a good match.
计算越精确就有如调节焦距般的效果：图像更清晰。
More accurate calculations would have the same effect as focusing a lens: the picture becomes sharper.
计算越精确就有如调节焦距般的效果：图像更清晰。
More accurate calculations would have the same effect as focusing a lens: the picture becomes sharper.
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