Zhang Zhengyou's EasyCalib MATLAB Implementation

This discussion focuses on Zhang Zhengyou's EasyCalib program. Although widely recognized for camera calibration tasks, the original implementation doesn't include accessible source code, limiting technical understanding and customization opportunities. The MATLAB implementation addresses this limitation by providing complete source code visibility, enabling users to examine core algorithms including chessboard corner detection, homography estimation, and intrinsic parameter optimization. Through this open implementation, developers can study the calibration pipeline's mathematical foundations, modify detection thresholds, adapt to different camera models, or integrate additional calibration patterns. The code structure typically includes key functions for image preprocessing, point correspondence matching, and nonlinear optimization using Levenberg-Marquardt algorithms. We recommend experimenting with this MATLAB version to gain deeper insight into computer vision calibration techniques while maintaining flexibility for project-specific adaptations.