Title:
OPTICAL INFORMATION DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/016798
Kind Code:
A1
Abstract:
An optical information detection system, comprising a projection assembly, a projection screen, a first imaging module, and an optical information detection device, wherein the projection assembly is used to project a projection pattern to the projection screen; the first imaging module is used to collect a first image projected to the projection screen; and the optical information detection device is used to perform feature extraction on the first image to obtain first feature information, acquire second feature information and first graphic information of a preset reference full-field projection pattern, calculate a first mapping relationship between the first feature information and the second feature information, map the first graphic information to a target full-field projection pattern to obtain second graphic information corresponding to the target full-field projection pattern, and calculate target optical information according to the second graphic information. The optical information detection system is used to detect the optical information. In a speckle pattern projected by the projection assembly, regardless of whether the zero-order speckle pattern is globally unique, the optical information may be accurately detected.
Inventors:
YANG PENG (CN)
LI WENJIAN (CN)
WANG ZHAOMIN (CN)
LI WENJIAN (CN)
WANG ZHAOMIN (CN)
Application Number:
PCT/CN2020/138125
Publication Date:
January 27, 2022
Filing Date:
December 21, 2020
Export Citation:
Assignee:
ORBBEC INC (CN)
International Classes:
G01S17/08
Foreign References:
| CN111929695A | 2020-11-13 | |||
| CN110276838A | 2019-09-24 | |||
| CN110264558A | 2019-09-20 | |||
| CN110348455A | 2019-10-18 | |||
| US20160301260A1 | 2016-10-13 |
Attorney, Agent or Firm:
CHINA TRUER IP (CN)
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