Title:
CALIBRATION METHOD, CALIBRATION SYSTEM, DEPTH CAMERA AND READABLE STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2024/031809
Kind Code:
A1
Abstract:
Provided in the present application are a calibration method, a calibration system, a depth camera and a readable storage medium. The calibration method is applied to a calibration system comprising a depth camera, calibration targets and a control and processing device, and comprises: according to camera coordinates of a first intersection point and a second intersection point and preset intrinsic and extrinsic parameters of a depth camera, calculating a first distance between the first intersection point and the second intersection point when the depth camera is in an ideal state; on the basis of a calculation principle of the depth camera and echo signals, calculating a second distance between the first intersection point and the second intersection point; and by means of comparing the first distance with the second distance, determining whether an image plane of the depth camera is parallel to calibration targets, and according to the determination result, selecting whether it is necessary to perform calibration correction on the depth camera (e.g. when the image plane of the depth camera is inclined relative to the calibration targets, the depth camera being in a non-ideal state, and then performing calibration correction on the depth camera). The present application eliminates an adverse effect caused by an inclination error, thereby improving the measurement precision and accuracy for a depth camera.
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Inventors:
ZHANG LINGPENG (CN)
YU TAO (CN)
WANG FEI (CN)
YU TAO (CN)
WANG FEI (CN)
Application Number:
PCT/CN2022/123159
Publication Date:
February 15, 2024
Filing Date:
September 30, 2022
Export Citation:
Assignee:
ORBBEC INC (CN)
SHENZHEN AOXIN MICRO VISION TECH CO LTD (CN)
SHENZHEN AOXIN MICRO VISION TECH CO LTD (CN)
International Classes:
G06T7/80
Foreign References:
| CN112686961A | 2021-04-20 | |||
| CN112198529A | 2021-01-08 | |||
| CN114792342A | 2022-07-26 | |||
| CN110570477A | 2019-12-13 | |||
| JP2014106118A | 2014-06-09 |
Attorney, Agent or Firm:
SHENZHEN HUNS INTELLECTUAL PROPERTY (CN)
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