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A Method for Measuring the Width of Building Cracks Based on Image Processing

A crack width and image processing technology, applied in image data processing, image analysis, image enhancement, etc., can solve the problems of complicated operation of instruments, inability to systematically detect cracks in concrete structures, and high cost of instruments, and achieve the effect of avoiding errors.

Active Publication Date: 2020-08-18
KUNSHAN CONSTRUCT ENG QUALITY TESTING CENT
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Problems solved by technology

[0004] The existing crack width detection method mainly has the following disadvantages: first, the cost of related instruments is high and uneconomical, and the operation of the instrument device is complicated, requiring professionals to operate; second, the above detection methods all need manual operation, manual observation of concrete Structural cracks have certain subjectivity, including the accuracy of instruments, resulting in low accuracy of crack detection data; third, the above method cannot systematically detect concrete structure cracks over time

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  • A Method for Measuring the Width of Building Cracks Based on Image Processing
  • A Method for Measuring the Width of Building Cracks Based on Image Processing
  • A Method for Measuring the Width of Building Cracks Based on Image Processing

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[0046] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0047] An embodiment of the method for measuring the width of building cracks based on image processing of the present invention comprises the following steps:

[0048] First install a color block with a fixed size on the surface of the wall next to the crack to be measured as a scale. The color of the color block is preferably black, which is convenient for post-processing, and the shape of the color block is square, and the color block is level with the concrete surface to ensure that the edge The length is consistent with the reality in the follow-up images, and it is also easy to calculate; the above-mentioned wall should be understood in a broad sense, which can be an exterior...

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Abstract

The invention discloses a building crack width measurement algorithm and method based on image processing. Color blocks with fixed sizes are arranged beside a building crack to serve as rulers; shooting the to-be-measured crack and a preset scale into the same picture by using shooting equipment to obtain a picture; processing the crack picture to obtain the number of pixels at the position with the maximum crack width and the number of pixels of the side length of the color block; and obtaining the actual value of the maximum width of the crack according to the proportion. The crack width ismeasured by utilizing an image processing technology and combining an algorithm, so that the measurement precision is greatly improved.

Description

technical field [0001] The invention relates to the field of building construction quality, in particular to a method for measuring the width of building cracks based on image processing. Background technique [0002] my country is a big country of construction, with a huge number of buildings, among which there are many buildings with cracks. Cracks have a vital impact on the safety and durability of buildings. Construction cracks mainly exist in concrete. Concrete cracks can be divided into micro cracks and macro cracks. Micro cracks basically have no effect on the structure itself. Most concrete works with tiny cracks. Concrete macro cracks are concrete cracks. If the width exceeds the calculation range of crack control in the code, it can be regarded as harmful cracks, which will bring safety hazards to structures and may lead to safety accidents. Therefore, crack detection has always been favored by domestic scholars. widespread attention. [0003] At present, the fo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/11G06T7/13G06T7/194G06T7/62G01B11/02
CPCG01B11/022G06T7/0004G06T7/11G06T7/13G06T7/194G06T7/62G06T2207/20164G06T2207/30132
Inventor 吴玉龙陈满军陈鹏宇岳大森丁勇
Owner KUNSHAN CONSTRUCT ENG QUALITY TESTING CENT
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