Geometric calibration of a camera

Introduction

By calibrating the parameters of the lens and image sensors, the distortion of an image can be calibrated to reconstruct the relative position of a camera and objects in the three-dimensional world. It has been widely used in the areas of remote sensing, measurement, etc. The MATLAB provides calibration tool based on the calibration method proposed by Zhang et al. In this project, the crema of a Samsung Galaxy A20 was calibrated by using MATLAB toolbox. The results showed high accuracy in both standard mode and fisheye mode.

Background

The camera calibration process is a transformation process from the 3D world coordinate to the image coordinate system. This process can be artificially divided into two steps: 1) from the 3-D world coordinate system to the 3-D camera’s coordinate system (extrinsic); 2) from the 3-D camera’s coordinate system to the image plane coordinate system (intrinsic).

Appendix

You can write math equations as follows: $y=x+5$

You can include images as follows (you will need to upload the image first using the toolbox on the left bar, using the "Upload file" link).