To create a 3d film, animators mimic natural human vision by building a stereoscopic camera rig within the computer.
制作3d电影时，动画制作者们用电脑建立起立体摄影设备，以模仿人类的正常视觉。
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Stereoscopicvision, integrating the images from two “eyes” looking at the same thing from different angles, is one approach, but it involves a lot of complicated computer processing.
To observe 30 cases with low degree intermittence exotropia in children for 30 months without any treatment, and analyze the exotropia degree change and the stereoscopicvision change.