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Dynamic distance measuring system based on binocular line scan cameras

A line-scanning camera and distance measurement technology, which is applied in line-of-sight measurement, photogrammetry/video measurement, and measurement devices, can solve problems such as time-consuming and labor-consuming, inconvenient measurement, and increased burden on railway inspection workers. Intuitive measurement results, simple structure and simple operation

Active Publication Date: 2012-07-18
CHANGAN UNIV
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Problems solved by technology

[0002] In scientific research and industrial production, in many cases it is necessary to obtain the relative distance between two objects, but if there are a large number of measured objects, it will be inconvenient to measure one by one, especially some equipment along the railway line, due to the large number of equipment And along the railway line is long, it will be time-consuming and labor-intensive to measure one by one, which will increase the burden on the railway inspection workers. At this time, a non-contact dynamic distance measurement system that is different from the traditional method is needed.

Method used

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  • Dynamic distance measuring system based on binocular line scan cameras
  • Dynamic distance measuring system based on binocular line scan cameras
  • Dynamic distance measuring system based on binocular line scan cameras

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Embodiment Construction

[0035] Reference figure 1 , The dynamic distance measurement system based on the binocular line scan camera of this embodiment includes an image acquisition device, a computer and a signal generator; among them:

[0036] The image acquisition device includes a camera bracket, a base and a movable stage. The camera bracket is symmetrically installed on two line scan cameras (A, B), the lens direction is horizontal and parallel to its optical axis, and the distance is 1000mm, and fixed, Then adjust the 4 adjustable support feet of the camera bracket base, and require the field of view (target surface) of the two line scan cameras (A, B) to overlap and be perpendicular to the horizontal plane.

[0037] In this embodiment, the line scan camera uses two Nikon D-type AF NIKKOR 50 / 1.8D cameras with a resolution of 4096*500, such as figure 2 , With a distance of 1000mm, connect two line scan cameras (A, B) to two Camera Link image capture cards, and the computer controls the two line scan ...

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Abstract

The invention discloses a dynamic distance measuring system based on binocular line scan cameras. The system comprises an image acquiring device, a computer and a signal generator, the image acquiring device comprises a camera support and a pedestal thereof, and a movable objective table, and the two line scan cameras are symmetrically arranged on the camera support. The measuring method of the measuring system comprises the following steps: acquiring a calibration image, carrying out inverse computation to obtain a corresponding relation, carrying out image acquisition, carrying out image preprocessing, extracting circle centers of the detected object circle, and obtaining the real distance of the detected object circle through calculating according to the corresponding relation. The system can be widely applied to the instantaneous space position filed and the like of moving objects of the railway industry, the medicine industry, the chemical industry, the food industry, the building industry and the like.

Description

Technical field [0001] The invention relates to a distance measurement system, in particular to a dynamic distance measurement system based on a binocular line scan camera. Background technique [0002] In scientific research and industrial production, in many cases it is necessary to obtain the relative distance between two objects. However, if there are a large number of objects to be measured, then it will be inconvenient to measure one by one, especially for some equipment along the railway, due to the large number of equipment. In addition, the long railway line will consume time and effort to measure one by one, and increase the burden on railway inspection workers. At this time, a non-contact dynamic distance measurement system that is different from traditional methods is needed. [0003] The pioneering work of stereo vision began in the mid-1960s. At the end of the 1970s, the visual computing theory created by Marr had a huge impact on the development of stereo vision, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C3/00G01C11/00
Inventor 韩毅谢昊原王金洋丁磊李健
Owner CHANGAN UNIV
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