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Apparatus of ranging laser point of remote ranging system and positioning method based on paralleling of laser and camera

A laser ranging and camera technology, which is applied in measuring devices, photogrammetry/video surveying, measuring distance, etc., can solve the problem of difficult identification of laser points, and achieve the improvement of performance and use effect, measuring distance and accuracy. Effect

Active Publication Date: 2012-05-09
FUJIAN HUICHUAN DIGITAL TECH
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Problems solved by technology

[0003] Aiming at the problem that the laser point is difficult to identify in the use of the remote distance measuring system, the present invention provides a positioning method and device for the distance measuring laser point of the remote distance measuring system based on the parallel deployment of the laser and the camera

Method used

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  • Apparatus of ranging laser point of remote ranging system and positioning method based on paralleling of laser and camera
  • Apparatus of ranging laser point of remote ranging system and positioning method based on paralleling of laser and camera
  • Apparatus of ranging laser point of remote ranging system and positioning method based on paralleling of laser and camera

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[0015] Use the ranging client to control the on-site cameras, laser ranging sensors, high-precision pan-tilts, and cameras through the Internet. First, adjust the pan / tilt to make the camera point to the object to be measured, find the object to be measured, and then adjust the pan / tilt to set the intersection point of the cross cursor in the video screen on the starting point and end point of the object to be measured, and obtain the starting point and remote measuring point through the laser rangefinder. The distance a from the terminal, the distance b between the end point and the remote ranging terminal, and the angle α between the starting point and the remote ranging terminal connection and the end point and the remote ranging terminal connection are obtained through the angle sensor, so that the starting point and the ending point are calculated using the cosine law formula The actual distance L between them, and the system can realize the subtitle superimposition, stora...

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Abstract

The invention discloses an apparatus of a ranging laser point of a remote ranging system and a positioning method based on paralleling of laser and camera. According to the invention, a mode of paralleling of a ranging laser and a camera optical axis, and beforehand parameter calibration on a preset position of the camera are employed to realize calculation and indication on a position of the ranging laser point in a camera frame. A gauger can watch on-site frame at a client operating terminal, capture the ranging laser point through a cross cursor intersection point indicated in the shooting frame of the camera and control the central cross cursor intersection point in the shooting frame of the camera to select a measure origin and a terminal point for measurement; meanwhile, functions of storage for reference and superposition of video subtitle can be realized, thereby solving a problem of laser point positioning under a long measuring range and strong ambient light in the remote ranging system.

Description

technical field [0001] The invention relates to the technical field of engineering measurement and control application, in particular to a laser spot device and positioning method in remote measurement based on network video. Background technique [0002] The remote distance measurement system adopts the combination of laser distance measurement and network video, so that the user can watch the live picture at the client operation end, and measure the actual distance between any two points in the selected picture, which is convenient for the user to remotely measure the remote distance. Measurement of the length of any object at the location of the ranging terminal and the distance between two points. Practice has proved that the system has a good application prospect in engineering survey, port, highway and subway construction survey, crop growth supervision and analysis, geological safety and other aspects. However, in practical applications, when the ranging laser point ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C3/00G01C15/02G01C11/00
Inventor 林景辉郑文
Owner FUJIAN HUICHUAN DIGITAL TECH
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