Distributed-analysis-based high-speed video measuring method of multi-layer-frame anti-seismic experiment

A multi-layer frame and video measurement technology, which is applied in image analysis, image data processing, instruments, etc., can solve the problems of time-consuming, etc., and achieve the effects of ensuring measurement accuracy, improving data processing efficiency, and reducing operation waiting time

Active Publication Date: 2018-12-21
TONGJI UNIV
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Problems solved by technology

This makes in the process of subsequent data processing, a single compute...

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  • Distributed-analysis-based high-speed video measuring method of multi-layer-frame anti-seismic experiment
  • Distributed-analysis-based high-speed video measuring method of multi-layer-frame anti-seismic experiment
  • Distributed-analysis-based high-speed video measuring method of multi-layer-frame anti-seismic experiment

Examples

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Embodiment

[0032] In this embodiment, a shaking table is used to simulate an earthquake, and the displacement, velocity and acceleration responses of different stages of the structure are measured by a high-speed camera photogrammetry system, and then the seismic robustness of the multi-storey frame under different levels of earthquakes is tested. like figure 1 As shown, the experimental model is a single-bay, four-span, four-story frame, the stirrup is HPB300, the beam-column longitudinal bar is HRB400, and the strength grade of reinforced concrete is C30. The plane size of the frame model is 6.2m×1.8m, the front elevation size is 6.2m×5.0m, the side elevation size is 1.8m×5.00m, the beam section size is 100mm×150mm, and the column section size is 150mm×150mm . Arrange additional masses at each layer of the model.

[0033] In this example, a high-speed camera photogrammetry system is used to measure a common frame to verify the feasibility and accuracy of the system. Paste 4 target p...

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Abstract

The invention relates to a distributed-analysis-based high-speed video measuring method of a multi-layer-frame anti-seismic experiment. The method comprises: step one, constructing a distributed stereo photogrammetric network and acquiring a structure sequence image; step two, carrying out tracking matching on target points on a to-be-measured structural object by using the distributed stereo photogrammetric network based on a distributed parallel processing strategy, calculating a three-dimensional space coordinate of atarget point sequence image by overall adjustment based on a beam method,and then calculating a vibration parameter of a calculated target point to complete measurement. Compared with the prior art, the distributed-analysis-based high-speed video measuring method has advantages of reducing data processing time, and improving processing efficiency, and the like.

Description

technical field [0001] The invention relates to the field of high-speed video measurement and positioning recognition, in particular to a high-speed video measurement method for multi-layer frame anti-seismic experiments based on distributed analysis. Background technique [0002] In recent years, high-speed photogrammetry systems have been widely used in the field of close-range photogrammetry, which makes it possible to detect changes in spatial information of high-speed moving objects. In the experiment, contact sensing has disadvantages such as limited range, increased model quality, and time-consuming and laborious installation, while the traditional high-speed photogrammetry method obtains image data through multiple cameras and processes the image data through post-processing. Since the high-speed camera has the characteristics of high frame rate and high resolution in the process of image acquisition, the full frame rate of the high-speed camera used reaches 500 fram...

Claims

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Application Information

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IPC IPC(8): G06T7/292H04L29/08
CPCH04L67/12G06T7/292
Inventor 童小华陈鹏高飒汪本康谢欢刘世杰金雁敏柳思聪许雄
Owner TONGJI UNIV
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