The tutorial seems to be using a default camera for the Raycast, make sure you have a camera in the scene that has its Tag set to Main camera.
本教程是使用默认的相机对光线投射，确保你的场景中的摄像机，其标签设置主相机。
Other than the default camera application, Android Market has quite a number of camera applications with interesting features as free downloads and paid applications for as low as $3.
除了默认的摄像头应用程序，Android软件商店里还有很多免费的和付费的摄像应用都具有相当有趣的功能，即便是付费的也很便宜，只需3美元。
By default, the video coming in from the camera is not in an RGB format.
默认情况下，来自摄像机的视频不是rgb格式的。
Below you can see both HDRI Settings and camera Settings (almost default) used for the shoot where we see the swimming pool + chair.
下面你可以看到HDRI的设置和相机设置(几乎默认)用于游泳池和椅子的渲染场景。
As a default, set your camera to its lowest ISO setting to have the least amount of noise.
作为默认值，你的相机会设定在最低的IS O以确保噪点最少。
Reset: Clicking this button will reset the camera parameters to their default values.
复位：点击该按钮将重置为其默认值摄像机参数。
Feel free to either choose your own perspective or use one of the bookmarks I have set in the default perspective camera (Fig. 2).
你可以自由选择一个你喜欢的透视视角或者使用我已经定义好的透视图摄像机视角。
Feel free to either choose your own perspective or use one of the bookmarks I have set in the default perspective camera (Fig. 2).
你可以自由选择一个你喜欢的透视视角或者使用我已经定义好的透视图摄像机视角。
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