Title:
CIS SYSTEM FOR META-IMAGING
Document Type and Number:
WIPO Patent Application WO/2023/231140
Kind Code:
A1
Abstract:
A CIS system (10) for meta-imaging, relating to the technical field of computational imaging. The CIS system (10) comprises: a main imaging system (100), a micro-lens array (200), an image acquisition unit (400), a first mask (300) arranged before, after or on the micro-lens array (200), and a second mask arranged near the main imaging system (100) or on a main imaging lens and before the micro-lens array (200). The main imaging system (100) is used for obtaining a first image of a target object; the first mask (300) is used for performing amplitude modulation on the first image; the micro-lens array (200) is used for performing phase modulation on an optical path of the first image by means of a preset phase modulation function to obtain a second image of the target object; the first mask (300) is used for performing mask modulation on the second image by means of a preset first mask modulation function, thus introducing more uniform spectrum aliasing to obtain light field information of the target object, so that the image acquisition unit (400) generates a final image according to the light field information. Therefore, on the basis of two light field acquisition modes in which the masks are added to the micro-lens array (200), the sampling efficiency and the light field imaging and reconstruction quality are improved, and meanwhile, the problems of high cost, large size and the like caused when a mask is added between a camera lens and a sensor of a camera array are solved.
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Inventors:
CAI YAWEN (CN)
GUO ZEQUN (CN)
GUO ZEQUN (CN)
Application Number:
PCT/CN2022/103915
Publication Date:
December 07, 2023
Filing Date:
July 05, 2022
Export Citation:
Assignee:
META RETINA BEIJING TECH CO LTD (CN)
International Classes:
G02B3/00
Domestic Patent References:
| WO2016175568A1 | 2016-11-03 |
Foreign References:
| US20090316014A1 | 2009-12-24 | |||
| CN114511605A | 2022-05-17 | |||
| CN106067162A | 2016-11-02 | |||
| CN105931190A | 2016-09-07 | |||
| CN103237161A | 2013-08-07 | |||
| CN112945141A | 2021-06-11 | |||
| CN113504547A | 2021-10-15 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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