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

问题描述

我通过相机校准得到了相机固有矩阵和失真参数.

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

我想，焦距的单位是像素.

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

然后，如何计算视场(沿y)?

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

这个公式对吗?

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

我将其用作

gluPerspective()

推荐答案

OpenCV具有功能可以做到这一点.查看实施情况(可在 GitHub )我们给出了一张尺寸为wxh的图像和一个相机矩阵:

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:

   

    

视野的等式是:

   

    

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