The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 2019
Filed:
Jan. 24, 2019
Shanghai Xiaoyi Technology Co., Ltd., Shanghai, CN;
Junzhou Mou, Shanghai, CN;
Zhenghua Liu, Shanghai, CN;
SHANGHAI XIAOYI TECHNOLOGY CO., LTD., Shanghai, CN;
Abstract
A dual fisheye lens calibration method includes: generating a first pair of fisheye images of two calibration chessboards located directly in front of two fisheye lenses and one or more random feature point calibration boards located in overlapping regions of the two fisheye lenses; adjusting positions of optical centers of the two fisheye lenses based on differences between projection coordinates of corner points on fisheye images and coordinates of images of the corner points on the first pair of fisheye images, to obtain optimal optical centers; generating a second pair of fisheye images of the calibration chessboards and random feature point calibration boards, based on the optimal optical points; generating a panoramic image based on the second pair of fisheye images; and adjusting distortion polynomial coefficients and extrinsic parameters of the two fisheye lenses based on a difference between panoramic-image coordinates of a matching feature point pair.