Title:
OPTICAL INFORMATION DETECTION METHOD, APPARATUS, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/016797
Kind Code:
A1
Abstract:
An optical information detection method, comprising: obtaining a first image acquired by a first imaging module, the first image comprising a target full-field projection pattern (S101); performing feature extraction on the first image to obtain first feature information (S102); obtaining second feature information and first graphic information of a preset reference full-field projection pattern (S103); calculating a first mapping relationship between the first feature information and the second feature information (S104); mapping the first graphic information to the target full-field projection pattern according to the first mapping relationship to obtain second graphic information corresponding to the target full-field projection pattern (S105); and calculating target optical information according to the second graphic information (S106). The method is compatible with two cases where a projection pattern projected by a projection assembly is regular or irregular, that is, in a speckle pattern projected by the projection assembly, optical information can be detected accurately no matter whether the zero-order speckle pattern is globally unique.
Inventors:
YANG PENG (CN)
LI WENJIAN (CN)
WANG ZHAO MIN (CN)
LI WENJIAN (CN)
WANG ZHAO MIN (CN)
Application Number:
PCT/CN2020/138123
Publication Date:
January 27, 2022
Filing Date:
December 21, 2020
Export Citation:
Assignee:
ORBBEC INC (CN)
International Classes:
G06T7/60; G06T7/00
Domestic Patent References:
| WO2018229358A1 | 2018-12-20 |
Foreign References:
| CN111986154A | 2020-11-24 | |||
| CN110657785A | 2020-01-07 | |||
| CN110189380A | 2019-08-30 | |||
| CN109342028A | 2019-02-15 | |||
| CN110689581A | 2020-01-14 | |||
| CN111354033A | 2020-06-30 | |||
| CN110490938A | 2019-11-22 | |||
| CN108230399A | 2018-06-29 | |||
| CN110177266A | 2019-08-27 |
Attorney, Agent or Firm:
CHINA TRUER IP (CN)
Download PDF:
Previous Patent: ARRAY EXPANSION METHOD FOR LINEAR ARRAY
Next Patent: OPTICAL INFORMATION DETECTION SYSTEM
Next Patent: OPTICAL INFORMATION DETECTION SYSTEM