Title:
IMAGE PROCESSING METHOD AND APPARATUS, ELECTRONIC DEVICE, AND READABLE STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/110687
Kind Code:
A1
Abstract:
Provided are an image processing method and apparatus, an electronic device, and a storage medium. The method comprises: respectively performing curve stretching on an input signal and a low-frequency signal of the input signal, so as to obtain a first signal and a second signal; calculating a third signal according to a high-frequency signal of the input signal and the second signal; when the slope of a stretched curve is greater than 1, that is, when a dynamic range of an image video is pulled up, using the first signal as an output signal; and when the slope of the stretched curve is less than or equal to 1, that is, when the dynamic range of the image video is compressed, using the third signal as the output signal.
Inventors:
LI YONGCHAO (CN)
ZHAO BO (CN)
HUNG HSINGCHIH (CN)
ZHAO BO (CN)
HUNG HSINGCHIH (CN)
Application Number:
PCT/CN2021/094570
Publication Date:
June 02, 2022
Filing Date:
May 19, 2021
Export Citation:
Assignee:
HAINING ESWIN IC DESIGN CO LTD (CN)
BEIJING ESWIN COMPUTING TECH CO LTD (CN)
BEIJING ESWIN COMPUTING TECH CO LTD (CN)
International Classes:
H04N9/64
Foreign References:
| CN112532958A | 2021-03-19 | |||
| CN109788170A | 2019-05-21 | |||
| CN110232670A | 2019-09-13 | |||
| CN108665437A | 2018-10-16 | |||
| CN102750680A | 2012-10-24 | |||
| US20070009170A1 | 2007-01-11 | |||
| US20100303374A1 | 2010-12-02 |
Attorney, Agent or Firm:
DRAGON INTELLECTUAL PROPERTY LAW FIRM (CN)
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