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Plane measuring method and plane measuring device based on monocular vision

A technology of plane measurement and monocular vision, applied in the direction of measurement devices, optical devices, instruments, etc., can solve the problems of difficult calibration of measurement systems, complex structure, long measurement time, etc., and achieve accurate measurement results, high precision, and simple methods. workable effect

Inactive Publication Date: 2013-04-10
INST OF AUTOMATION CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

Binocular vision can achieve higher accuracy by fusing information from multiple cameras, but it has the disadvantages of complex structure and long measurement time compared with monocular vision measurement
The main principle of structured light vision measurement is to use structured light to form features, and obtain the three-dimensional coordinate information of feature points according to the principle of triangulation. Structured light has strong anti-interference ability and good real-time performance, but it is difficult to calibrate the measurement system.

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  • Plane measuring method and plane measuring device based on monocular vision
  • Plane measuring method and plane measuring device based on monocular vision
  • Plane measuring method and plane measuring device based on monocular vision

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0026] In order to measure the position and length of an object in a fixed plane, the present invention proposes a plane measurement method based on monocular vision. In this method, a planar target is placed on the plane to be measured, and calibration points are selected on the planar target to calibrate the camera, and the necessary parameters for conversion from the world coordinate system to the image coordinate system are obtained. Through the conversion relationship between the world coordinate system and the image coordinate system, the position coordinates of the feature points of the object in the world coordinate system are obtained, and then the length value of the object in the world coordinate system is obtai...

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Abstract

The invention provides a plane measuring method and a plane measuring device based on the monocular vision. The plane measuring method includes placing a plane target on a measured plane, selecting a fixed point on the plane target for camera calibration, and obtaining necessary parameters for conversion from a world coordinate system to an image coordinate system. Through utilization of a conversion relationship between the world coordinate system and the image coordinate system, obtaining a position coordinate of an object feature point in the world coordinate system, and further obtaining the length value of an object in the world coordinate system.

Description

technical field [0001] The invention relates to the fields of computer vision and image processing, in particular to a plane measurement method based on monocular vision. Background technique [0002] Common visual measurement methods mainly include monocular vision measurement, binocular vision measurement, structured light vision measurement, etc. Binocular vision can achieve higher precision by fusing information from multiple cameras, but it has the disadvantages of complex structure and long measurement time compared with monocular vision measurement. The main principle of structured light vision measurement is to use structured light to form features, and obtain the three-dimensional coordinate information of feature points according to the principle of triangulation. Structured light has strong anti-interference ability and good real-time performance, but it is difficult to calibrate the measurement system. Contents of the invention [0003] (1) Technical problems ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/02
Inventor 徐德尹英杰张正涛王欣刚
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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