Title:
METHOD AND APPARATUS FOR LENS FOCUSING, COMPUTER DEVICE AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/040423
Kind Code:
A1
Abstract:
Embodiments of the present application disclose a method and apparatus for lens focusing, a computer device and a storage medium. The method comprises: acquiring a test image obtained by a lens photographing a reference image at a current focus adjustment position, and determining a low-frequency modulation transfer function value of the test image; in response to determining that the low-frequency modulation transfer function value meets a preset numerical range condition, determining a high-frequency modulation transfer function value of the test image, determining a motion step length according to the high-frequency modulation transfer function value, and controlling the lens to move according to the motion step length; and using the next focus position to which the lens arrives as a new current focus adjustment position, so as to perform one-time focusing.
Inventors:
LIN KAI (CN)
WANG YAN (CN)
WANG YAN (CN)
Application Number:
PCT/CN2022/103601
Publication Date:
March 23, 2023
Filing Date:
July 04, 2022
Export Citation:
Assignee:
ZHEJIANG UNIVIEW TECH CO LTD (CN)
International Classes:
H04N5/232
Foreign References:
| CN113556470A | 2021-10-26 | |||
| CN105093480A | 2015-11-25 | |||
| JP2008233389A | 2008-10-02 | |||
| CN203882012U | 2014-10-15 | |||
| US20200389598A1 | 2020-12-10 | |||
| CN202111096405A | 2021-09-18 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
Download PDF: