如何从相机固有矩阵计算相机的视野? [英] how to calculate field of view of the camera from camera intrinsic matrix?

问题描述

我使用相机校准获得了相机固有矩阵和失真参数.

我猜焦距的单位是像素.

那么，我如何计算视野(沿 y)?

这个公式对吗?

double fov_y = 2*atan(height/2/fy)*180/CV_PI;

我会用它来做参数

gluPerspective()

解决方案

OpenCV 有一个

视野方程为:

    

I got camera intrinsic matrix and distortion parameters using camera calibration.

The unit of the focal length is pixels, i guess.

Then, how can i calculate field of view (along y) ?

Is this formula right?

double fov_y = 2*atan(height/2/fy)*180/CV_PI;

I'll use it to parameters of

gluPerspective()

解决方案

OpenCV has a function that does this. Looking at the implementation (available on GitHub) we have given an image with dimensions w x h and a camera matrix:

    

the equations for the field of view are:

    

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