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Alignment calibration method and system for 3D measuring device and computer readable storage medium

The technology of a measuring device and a calibration method is applied in the field of sensor calibration to achieve the effect of eliminating errors and making the calibration method simple and efficient.

Active Publication Date: 2020-07-28
SHENZHEN ORBBEC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the existing problems, the present invention provides an alignment and calibration method, system and computer-readable storage medium for a 3D measuring device

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  • Alignment calibration method and system for 3D measuring device and computer readable storage medium
  • Alignment calibration method and system for 3D measuring device and computer readable storage medium
  • Alignment calibration method and system for 3D measuring device and computer readable storage medium

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Embodiment Construction

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the connection can be used for both fixing function and circuit communication function.

[0027] It is to be understood that the terms "length", "width", "top", "bottom", "front"...

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Abstract

The invention provides an alignment calibration method and system for a 3D measuring device and a computer readable storage medium. The method is applied to a 3D measuring device comprising at least one automatic focusing module and an imaging module and comprises the steps of: calibrating a lens of the automatic focusing module, and obtaining a calibration result; acquiring a first motion displacement value and a motion inclination value of the lens of the automatic focusing module at a plurality of preset distances according to the calibration result; constructing a polynomial fitting function, fitting the optical center deviation value of the lens obtained according to the motion inclination value with the first motion displacement value, determining the value of an undetermined coefficient in the polynomial fitting function, and storing the value of the undetermined coefficient as the fitting parameter of the lens; obtaining the optical center deviation value of the lens accordingto a second motion displacement value during the real-time movement of the lens and the polynomial fitting function; and calibrating the optical center parameter of the lens according to the optical center deviation value of the lens, and aligning and calibrating the 3D measuring device. The method is simple and efficient, and eliminates errors caused by gravity.

Description

technical field [0001] The present invention relates to the technical field of sensor calibration, in particular to an alignment calibration method, system and computer-readable storage medium for a 3D measuring device. Background technique [0002] With the rapid development of visual sensors and computer technology, machine vision has been widely used, such as 3D measurement, 3D object reconstruction, etc. Currently widely used 3D measurement devices are based on the main technologies of TOF ranging technology, structured light ranging technology, binocular ranging technology, etc. Moreover, the application of auto focus (Auto Focus, AF) technology in the 3D measuring device can realize high-quality, large-scale picture shooting. [0003] In a 3D measurement device, it is usually necessary to fuse the collected depth data and color data to obtain the 3D information of the object. Therefore, it is necessary to strictly align the depth camera and the color camera, that is, ...

Claims

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Application Information

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IPC IPC(8): G01B11/24
CPCG01B11/24G01B21/042
Inventor 黄杰凡
Owner SHENZHEN ORBBEC