Light field camera calibration method for eliminating distortion of main lens

A light field camera calibration method for eliminating distortion of a main lens comprises the steps that a light field camera is regarded as a black box system for achieving pixel and light mapping, a light field camera center viewpoint imaging model is equivalent to a classic camera model, and attitude parameters of a target plane are estimated; the method comprises the following steps of: obtaining coordinates of intersection points of light rays emitted from each pixel of a light field camera and a target plane by utilizing a camera external parameter matrix; generating a plurality of intersection points by changing the relative positions of the camera and a target for multiple times; fitting a parameter equation of the light rays corresponding to the pixels in a three-dimensional space; performing uniform resampling processing on the light rays; therefore, distortionless light field distribution is obtained; based on light field three-dimensional reconstruction of a polar plane graph, the polar plane gr