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A Binocular Vision Measurement Method Based on Time Axis Constraints

A technology of binocular vision measurement and time axis constraint, which is applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems that it is difficult to greatly improve the accuracy of binocular vision on-site measurement

Active Publication Date: 2017-12-19
DALIAN UNIV OF TECH
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Problems solved by technology

[0004] The technical problem to be solved in the present invention is to solve the problem that it is difficult to greatly improve the accuracy of binocular vision on-site measurement, and invented a binocular vision measurement method based on time axis constraints

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  • A Binocular Vision Measurement Method Based on Time Axis Constraints
  • A Binocular Vision Measurement Method Based on Time Axis Constraints
  • A Binocular Vision Measurement Method Based on Time Axis Constraints

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Embodiment 1

[0070] Embodiment 1, the present invention adopts two cameras respectively equipped with wide-angle lenses to capture a light strip image, and controls the rotational scanning movement of the laser through an electronically controlled rotating platform. The binocular camera model is vieworks VC-12MC-M / C 65, resolution: 4096×3072, image sensor: CMOS, frame rate: full frame, up to 64.3fps, weight: 420g. The wide-angle lens model is EF16-35mmf / 2.8LIIUSM, the parameters are as follows, lens focal length: f=16-35, APS focal length: 25.5-52.5, aperture: F2.8, lens size: 82×106. The shooting conditions are as follows: the picture pixel is 4096×3072, the focal length of the lens is 17mm, the object distance is 750mm, and the field of view is about 720mm×1300mm. The electronically controlled rotary platform adopts Zhuoli Hanguang's electronically controlled rotary platform RAK350, its step angle is 1.8 degrees, and the repeatability of the rotation angle is less than 0.003 degrees. Th...

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Abstract

The invention belongs to the technical field of computer vision measurement, and relates to a binocular visual sense measurement method based on time rotating shaft constraint. The method integrates calculating of laser scanning speed and measurement time of an electrically-controlled rotating bench, establishes time rotating shaft constraint, determines a spatial accuracy position of a characteristic laser plane, converts image errors into control errors of motions and time and realizes high-precision reconstruction of laser characteristic information. The measurement method converts the binocular measurement errors based on images into the control errors based on a time rotating shaft, lowers spatial measurement errors for one order of magnitude, raises three-dimensional measurement precision of binocular visual sense and integrates laser light stripe reconstruction information in sequential images to complete measurement of surface geometric quantity of measured objects and realizes high-precision reconstruction of surface laser light stripe of the measured objects.

Description

technical field [0001] The invention belongs to the technical field of computer vision measurement and relates to a binocular vision measurement method based on time axis constraints. Background technique [0002] The shape and surface dimensions of large components such as large aircraft tail will directly affect the high-quality connection and assembly of important equipment components. High-precision measurement of shape and surface dimensions is a necessary condition to ensure the design requirements and functional requirements of equipment. Three-dimensional measurement is critical in the assembly and manufacture of large parts. The binocular vision measurement method is to use a binocular camera to collect the characteristics of the measured object or to reflect the characteristic information of the shape of the measured object. Through the extraction and reconstruction of these features, the reconstruction of the shape of the measured object is realized. This method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24
CPCG01B11/2433
Inventor 刘巍张洋杨帆高鹏兰志广李晓东贾振元高航
Owner DALIAN UNIV OF TECH
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