Fisheye Camera 鱼眼相机

Fisheye lenses can capture ultra-wide-angle images that are circularly distorted. In some cases, the distortion can be aesthetically desirable.

鱼眼镜头可以捕捉到圆形扭曲的超广角图像，在某些情况下，扭曲可以是美学上所希望的。

How to use

如何使用

Please use this link for information on how to turn a camera into a fisheye camera.

请使用这个链接获得如何将相机变成鱼眼相机的信息。

Parameters

参数

 

The horizontal and vertical scales which allow 'zooming into' the distorted image. This can help get rid of the black area surrounding the image.

水平和垂直尺度允许“放大”扭曲的图像。这可以帮助去除图像周围的黑色区域。

To demonstrate the effect of the fisheye camera, we'll use the following reference scene. The camera is pointing towards the green sphere. The red sphere is 90 degrees to the left of the camera and the blue sphere is 90 degrees to the right. The black sphere is exactly behind the camera.

为了演示鱼眼相机的效果，我们将使用以下参考场景。照相机正对着那个绿色的球体。红色的球体在照相机左侧90度，蓝色的球体在右侧90度。黑色的球体正好在照相机的后面。

Here we demonstrate the fisheye camera with an FOV of 180 degrees. This captures the entire front hemisphere of the camera.

在这里，我们演示了鱼眼相机的视场为180度。这可以捕捉到摄像机的整个前半球。

If the surrounding black areas are undesirable, the user can use the horizontal/vertical scales to zoom into the image and get rid of them. In this case, we used a scale of 1.41 (the square root of two) which is the scale needed to fit the image exactly into the circle.

如果周围的黑色区域是不受欢迎的，用户可以使用水平/垂直比例缩放到图像中，并摆脱他们。在这个例子中，我们使用了1.41的比例尺(2的算术平方根) ，这是将图像精确地放入圆圈所需的比例尺。