Large-visual-field masonry structure material three-dimensional whole deformation measurement method and system

Abstract

The present invention relates to a large-visual-field masonry structure material three-dimensional whole deformation measurement method and system. The method comprises the following steps of: employing a binocular camera to perform continuous shooting of a deformation state of an area to be measured, and obtaining a continuous deformation state image sequence of the area to be measured, wherein the area to be measured of masonry structure materials has prepared speckles; employing a multiple-baseline matching method to perform image matching of the deformation state image to obtain image matching information; and employing internal and external parameters calibrated by the camera and the image matching information to calculate the deformation displacement amount in each deformation state.The method is simple in enforcement, has non-contact measurement and can achieve three-dimensional whole-field deformation measurement in a large variation scene, and the method is implemented according to the method to facilitate automatic and rapid online processing of data.

Description

Technical field [0001] The method of the present invention relates to a visual measurement method in the technical field of measurement, in particular to a method and system for measuring three-dimensional full-field deformation of masonry structure materials with a large field of view. Background technique [0002] Masonry structure is a structure in which walls and columns made of blocks and mortar are used as the main force-bearing components of buildings. Masonry is used as a wall material in civil buildings in my country, accounting for about 90%, and it is a common material for construction projects. . The compressive, tensile, and shear strength of the masonry is relatively low, so the earthquake resistance is poor. In recent years, the strong earthquake damage data shows that the overall collapse of the masonry structure has more earthquake damage accidents, which seriously damages the lives and property of the people. Therefore, it is very necessary to accurately measure...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the existing deformation measurement methods of masonry structural materials and meet the requirements of efficiency and accuracy in actual use, the present invention provides a visual measurement method for deformation of masonry structural materials with a large field of view, which can efficiently measure the deformation of masonry structural materials Obtain high-precision measurement results during the deformation process of masonry structural materials, and further study the failure mechanism of masonry structural materials

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