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:
Mar. 02, 2021
Filed:
Jul. 09, 2019
Qisda Corporation, Taoyuan, TW;
Fang-Bin Liu, Hsinchu, TW;
Chang-Te Lin, Toucheng Township, TW;
Qisda Corporation, Taoyuan, TW;
Abstract
An image calibration method of the present invention is configured to calibrate the position of observation area in motion image which includes image frames. The step of the image calibration method includes: determining the observation area and acquires central position of the observation area in first image frame of the motion image; determining first unique area, which complies with gradient characteristic, in the first image frame; acquiring first vector value from the central positions of the observation area to the first unique area in the first image frame; finding second unique area in the second image frame of the motion image according to the gradient characteristic; acquiring second vector value from the central position of the observation area to the central position of the second unique area in the second image frame; and calibrating position of the observation area in a third image frame according to the difference between the first vector and the second vector.