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Split measurement method and device for spatial position in three-dimensional field

A technology of spatial position and measurement method, applied in the direction of measurement device, optical device, instrument, etc., can solve the problems of linear error, high cost, complex optical path, etc., and achieve the effect of large measurement flexibility, simple structure and strong operability

Inactive Publication Date: 2010-10-20
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

The measurement of three-dimensional space by photoelectric technology is the most convenient and effective method compared with other technologies, but there are still many complicated difficulties in the measurement of photoelectric technology.
In the prior art, two CCD cameras are often used for measurement, but this method not only uses two CCD cameras, but also has problems such as linear error in the geometric calibration lens of the CCD camera, complex optical path, and high cost. How to solve the above problems is still unclear. No related literature reports

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  • Split measurement method and device for spatial position in three-dimensional field
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  • Split measurement method and device for spatial position in three-dimensional field

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specific Embodiment approach

[0019] The specific embodiment: the present invention will be further described below in conjunction with accompanying drawing:

[0020] Firstly, the labels in each drawing are introduced: 1. Luminous object point; 2. Red filter; 3. Green filter; 4. Right-angle prism; 5. Plane mirror; 6. Cube prism; 7. CCD camera; 8. Negative film; 9. Pixels; 91. Green pixels; 92. Red pixels.

[0021] The invention is a measuring method and device for measuring the spatial position of an object in a three-dimensional field by using photoelectric technology. The device comprises two different color filters (referring to red filter 2 and green filter 3 here); a flat mirror, a rectangular prism, a cube prism and a CCD camera. The luminescent object points are imaged on the CCD camera through the red filter and the green filter respectively, and through the rectangular prism, the plane glass mirror and the cubic prism. Due to the different spatial positions of the luminous object points in the t...

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Abstract

The invention belongs to the technical field of photoelectric measurement, and discloses a split measurement method and a split measurement device for spatial position in three-dimensional field. The device is characterized by comprising a red light filter, a green light filter, a right-angle prism, a flat glass reflector, a cubic prism and a CCD camera. The method comprises the following steps of: splitting an illuminant point into two-color light through the red light filter and the green light filter by using the light splitting principle, imaging the two beams of light on the same CCD camera by using the right-angle prism, the flat glass reflector and the cubic prism, and determining spatial position coordinates of the illuminant point in the three-dimensional field because of a one-to-one corresponding relationship between the illuminant point in the three-dimensional field and red and green image points. The defects of the conventional polynomial compensation method for linearity errors in a geometrical calibration lens and the like are overcome by a mesh calibration method, and the problem of system error is solved. The method has the advantages of simple structure, high precision, strong operability and high measurement elasticity.

Description

technical field [0001] The invention belongs to the technical field of photoelectric measurement, and specifically refers to a device and method for measuring a spatial position in a three-dimensional field. Background technique [0002] The space position measurement technology in the three-dimensional field is the basis of the three-dimensional space measurement. By measuring the space position, the three-dimensional space position vector field and velocity field can be obtained. The measurement of three-dimensional space by photoelectric technology is the most convenient and effective method compared with other technologies, but there are still many complicated difficulties in measurement by photoelectric technology. In the prior art, two CCD cameras are often used for measurement, but this method not only uses two CCD cameras, but also has problems such as linear error in the geometric calibration lens of the CCD camera, complex optical path, and high cost. How to solve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00
Inventor 李福宝李勤李忠科王德喜
Owner SHENYANG POLYTECHNIC UNIV
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