Panorama parking calibration method and device, and automatic calibration method

Abstract

The invention discloses a panorama parking calibration method and a device, and an automatic calibration method, wherein the panorama parking calibration method comprises the steps of obtaining pictures which is captured by an automobile camera; using default parameters of a panorama parking system to generate an aerial view; distinguishing tag blocks on the aerial view; distinguishing controlling points according to the tag blocks; obtaining actual positions and ideal positions of the controlling points, wherein the controlling points are intersection points of lines and distributed in a net shape, and the ideal positions are appointed positions in the aerial view; and optimizing by utilizing difference between the actual positions and the ideal positions of each controlling point in the aerial view and obtaining lens distortion correction parameters and perspective transformation parameters of a wind-angle camera which corresponds to the aerial view. The area of the tag blocks is greater than that of the intersection points and is easy to distinguish. A light color is adopted on distinguish strips and a deep color is adopted on a carrier so as to reduce effects which are caused by reflect light, an absolute coordinate of a calibration pattern on a coordinate system is positioned and calibrated accurately, and a success rate of calibration is improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a calibration method and device for panoramic parking, and an automatic calibration method. Background technique [0002] In recent years, with the rapid development of the automobile industry and the continuous improvement of people's living standards, the number of automobiles in our country is increasing rapidly, and the proportion of non-professional automobile drivers among automobile drivers has also increased significantly. When reversing in crowded and narrow places such as streets, garages and parking lots, scratches are prone to occur due to the blind spots of conventional optical rearview mirrors. [0003] In order to solve the problem of the blind spot of the reversing perspective, a simple reversing rearview system was born. Through a camera installed at the rear of the vehicle body, the driver can see the image of a small area behind the vehicle body in the cab...

AI Technical Summary

Problems solved by technology

In this way, the camera is not well calibrated, so the bird's-eye view will be distorted, and it is difficult to achieve a good stitching effect, which will ultimately affect the user experience of the panoramic parking system

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