VR设备中的ViewPort和视野(FOV)有什么区别? [英] What is the difference between ViewPort and Field Of View (FOV) in VR devices?

问题描述

我了解以下内容.

1)ViewPort:它就像一个窗口，通过它可以看到外界.基本上，它是在2D平面上投影3D对象.

1) ViewPort: It is like a window through which one can see the outside world. Basically, it is a 2D plane on which 3D objects gets projected.

2)视场(FOV):FOV是从眼睛瞳孔或虚拟相机发出的圆锥投影.无需转动头部，就能看到圆锥投影内的所有东西.

2) Field Of View (FOV): FOV is a cone projection from the eye pupil or virtual camera. One can see everything inside that cone projection without turning the head.

• 单眼FOV是单眼看到的

• Monocular FOV is what a single eye can see

双眼FOV是两只眼睛都能清楚看到的东西

Binocular FOV is what both eyes put together can see clearly

周围视野是在双眼视野之外但在单眼视野内的区域.

Peripheral FOV is the region outside the binocular FOV but within monocular FOV.

我的问题是

1)什么是虚拟现实(VR)耳机设备中的ViewPort和FOV?在这种情况下，它们之间有什么区别?

1) What is ViewPort and FOV in a virtual reality (VR) Headset device? What is the difference between them in that context?

推荐答案

您所描述的是ViewPort.通常将其定义为界限.宽度和高度都在0.0到1.0之间，其中0.0是屏幕的最左边缘.不太直观的是0.0在屏幕底部(我猜这在系统之间可能会有所不同).有时，它是以屏幕像素为单位定义的.另外，可以将第二个参数而不是绝对范围定义为范围.

ViewPort is what you describe. It's usually defined as bounds. Between 0.0 and 1.0 for both width and height, where 0.0 is the left-most edge of the screen. Less intuitively 0.0 is at the bottom of the screen (I guess this might vary between systems). Sometimes it's defined in screen pixels instead. Also, rather than absolute bounds, second parameters may be defined as extent instead.

示例:

左视口定义，范围(0.0, 0.0, 0.5, 1.0)表示从左/下角到中心/顶部.

Left viewport definition, bounds (0.0, 0.0, 0.5, 1.0) Means going from left/bottom corner, to center/top.

右视口定义，边界(0.5, 0.0, 1.0, 1.0) 表示从中心/底部到右侧/顶部.

Right viewport definition, bounds (0.5, 0.0, 1.0, 1.0) Means going from center/bottom, to right/top.

右视口定义，范围(0.5, 0.0, 0.5, 1.0) 从中心/底部开始，水平扩展半屏，垂直扩展全屏.

Right viewport definition, extent (0.5, 0.0, 0.5, 1.0) Going from center/bottom, and extends half a screen horizontally, full screen vertically.

FOV通常是用户可以看到的总字段(在VR情况下，两个视口都算在内).通常以度数表示.

FOV is usually mentioned as the total field the user can see (counting both viewports in the case of VR). It's usually measured as an angle in degrees.

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