CALIBRATION METHOD FOR EXTRINSIC CAMERA PARAMETER OF ON-BOARD CAMERA SYSTEM, AND CALIBRATION SYSTEM

摘要

A calibration method for an extrinsic camera parameter of an on-board camera system, applicable to electronic apparatuses. The method comprises: acquiring image information of one frame, and performing, by means of a lane detection method, global identification on the image information to obtain lane information (101); selecting, from each lane, at least two feature points at random, calculating coordinates of the feature points in a global coordinate system, and incorporating a camera height to find an angle correction amount by means of an inverse trigonometric function (102); and performing, by means of an iterative method, iterative compensation on an angle of an extrinsic camera parameter, and obtaining an accurate angle of the extrinsic camera parameter (103). The invention uses a front camera to acquire an image of a road ahead, extracts information of lanes and a target vehicle position from the image of the road, and uses lane information in combination with a static calibration result and an inverse trigonometric function to solve an angle of an extrinsic camera parameter dynamically, such that a more accurate angle of the extrinsic camera parameter is obtained, thereby solving a distance of a target with respect to a vehicle body according to the target vehicle position in the image.