Novel method for identifying support position in pit construction process

An identification method and foundation pit technology, applied in infrastructure engineering, excavation, image data processing, etc., can solve the problems of data collection, sharing, transmission, and high efficiency, speed, and convenience

Inactive Publication Date: 2014-12-10
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Viewing, estimating, and recording the location of support construction by traditional workers on site is not only highly subjective, but also fails to achieve the purpose of facilitating data collection, sharing, transmission, and efficiency, speed, and convenience

Method used

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  • Novel method for identifying support position in pit construction process
  • Novel method for identifying support position in pit construction process
  • Novel method for identifying support position in pit construction process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Such as figure 1 As shown, a new method for identifying the support position in the foundation pit construction process includes the following steps:

[0077] (1) Use the computer vision toolkit HALCON calibration method to calibrate the camera to obtain the internal parameters of the camera;

[0078] (2) Keep the internal parameters of the camera unchanged, install a fixed camera at a suitable position around the foundation pit according to the field of view of the camera, and collect on-site images of the foundation pit construction. In this implementation, the horizontal length of the shooting range is about 22m, and the width is about 30m. The installation height is about 14.05m, and the angle between the camera axis and the vertical line is 45 degrees;

[0079](3) Using the division distortion model, the lens distortion correction is performed on the collected images of the foundation pit construction site, and the distortion-corrected image is obtained;

[0080...

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PUM

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Abstract

The invention relates to a novel method for identifying a support position in pit construction process. The method comprises the following steps of calibrating a camera by adopting a computer vision toolkit; acquiring a photo of pit construction; performing lens distortion correction for the acquired image; determining external parameters of the camera by a control point method according to a corresponding relationship between a three-dimensional space point and a two-dimensional image point of the pit; determining the relationship of various components which support color images R, G and B at the pit site by a statistical component method; projecting support coordinates under the known world coordinate system on the pit image subjected to the distortion correction, and forming an image area corresponding the support; identifying whether construction is carried out on the support according to the relationships among the components of the color images R, G and B of the pit support; and reading in the world coordinate of the next support of the pit, performing circulating judgment, and returning to the currently constructed supports and calculating the number of the supports. Compared with the prior art, the method provided by the invention has the advantages of low cost, high precision, fastness, convenience and the like.

Description

technical field [0001] The invention relates to a novel technology for identifying support positions during foundation pit construction, in particular to a novel method for identifying support positions during foundation pit construction. Background technique [0002] In recent years, due to the development and penetration of computer technology, more and more attention has been paid to the information construction of foundation pit engineering, and information design and construction methods have also made great progress. In order to ensure the safe and smooth progress of the foundation pit project, it is particularly important to quickly and accurately grasp the current construction progress of the foundation pit project. The traditional monitoring information given in the form of reports is not timely, efficient and intuitive in terms of presentation, which wastes a lot of time on the analysis of monitoring data, diverts the attention of decision makers, and even delays m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T5/00E02D17/02
Inventor 李晓军孙仕敏
Owner TONGJI UNIV
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