Revolution body object pose vision measurement method

A technology of visual measurement and rotation, which is applied in the field of visual measurement, can solve the problems of being susceptible to interference, low accuracy of yaw angle, and dependence on measurement attitude parameters, etc., and achieves the effect of large measurement range, high robustness and high precision

Active Publication Date: 2015-04-01
CHINA ACAD OF AEROSPACE AERODYNAMICS
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Problems solved by technology

Liu Shuangjun et al. proposed the three-dimensional matching method of cooperative marker points, which lay out a series of marker points on the surface of the model according to the design rules, so that the features of the model can be captured in any attitude, thereby expanding the measurement range of the model attitude and improving the measu

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  • Revolution body object pose vision measurement method
  • Revolution body object pose vision measurement method
  • Revolution body object pose vision measurement method

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[0023] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0024] When the provolute target is moving at a high speed, such as the dropped object in the wind tunnel drop test, in order to measure the pose information of the provoked target at each moment, and make the position information have a higher accuracy, where the pose information refers to Are the pitch angle, roll angle, yaw angle of the body target and the center of mass coordinates of the body target.

[0025] See Figure 1-9 , The embodiment of the present invention provides a method for visually measuring the pose of a rotator target, which includes:

[0026] Step 101: Set the positions of the two cameras, set one of the two cameras on the side of the body target, and set the other camera in a vertical plane parallel to the axis of the body target; or set the two cameras One of the cameras is set under the body target, and the other camera is set i...

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Abstract

The invention discloses a revolution body object pose vision measurement method. The method comprises the following steps: based on a vision measurement technique, and respectively distributing two high-speed cameras on the side surface and the lower surface of an object by adopting two high-speed cameras; setting a mark on the object for measuring a rolling angle and a mass center position of the object; and calculating to obtain position and posture information of the object by extracting a mark line and an axial contour line on the object surface in images captured by the cameras. The position and posture information of the revolution body object obtained by using the method disclosed by the technical scheme of the invention has the advantages of high precision, high robustness and large measurement range compared with that of an existing measurement technology.

Description

technical field [0001] The invention belongs to the technical field of visual measurement, in particular to a method for visual measurement of the pose and posture of a rotational object. Background technique [0002] For tests that need to measure the pose parameters of a rotating target, such as the drop test, the target has the characteristics of simple shape, small size, and fast movement speed. Traditional methods of measuring pose information, such as built-in gyroscopes, accelerometers, etc., will affect the weight and mass distribution of the target, and the response speed cannot meet the requirements, so it is difficult to apply it to the pose measurement test of such targets. [0003] As an advanced measurement technology, visual measurement technology has many advantages such as non-contact, high response speed, and high precision. First, the mapping relationship between the spatial coordinate system entity object and its image is established, that is, the camera...

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Application Information

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IPC IPC(8): G01C11/08
CPCG01C1/00G01C11/00
Inventor 杨益农周付根薛飞薛斌党赵玲成磊黄渊蔡广平
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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