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Road surface crack detection method based on dynamic programming

A technology for dynamic planning and pavement cracks, applied in the field of detection, can solve problems such as crack irregularity, and achieve the effect of effective extraction

Active Publication Date: 2010-12-15
WUHAN WUDA ZOYON SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But cracks are irregular, and it is not enough to use "limited rules" to judge "infinite cases"

Method used

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  • Road surface crack detection method based on dynamic programming
  • Road surface crack detection method based on dynamic programming
  • Road surface crack detection method based on dynamic programming

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Embodiment Construction

[0052] The crack detection method based on dynamic programming designed in the present invention is a global processing method, which can effectively extract cracks with low contrast and poor continuity.

[0053] The invention designs a crack detection method divided into three steps: the first step is crack enhancement, the second step is crack extraction, and the third step is crack classification.

[0054] A fracture enhancement algorithm based on local features and global features is designed. Local enhancement uses fuzzy gradient and directional filtering algorithms; in global enhancement, the method of minimum cost path search is used. Local enhancement and global enhancement are used together to ensure the effect of enhancement.

[0055] A fracture extraction method based on Beamlet transformation and dynamic programming is designed. Beamlet transform is often used to extract line objects, especially the line segment global chain algorithm based on Beamlet transform h...

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Abstract

The invention provides a road surface crack detection method based on dynamic programming, comprising the following steps: 11, utilizing a crack with low fuzzy gradient and path tracking contrast ratio for effectively strengthening; 12, utilizing a dynamic programming method to effectively detect the crack with poor continuity; and 13, utilizing a support vector machine model to classify the extracted crack. The road surface crack detection method based on dynamic programming of the invention can effectively extract the crack with low contrast ratio and poor continuity.

Description

technical field [0001] The invention relates to a detection method, in particular to a detection method for pavement cracks based on dynamic programming. Background technique [0002] Cracks are the most common damage to highway pavement, which not only reduces the waterproofness, durability and bearing capacity of the pavement, but also due to the high speed and heavy load of driving vehicles, cracks will evolve into more serious pavement diseases, such as potholes, etc. Therefore, crack detection has become an important part of timely remediation of pavement diseases to ensure its safe operation. The traditional detection method of pavement cracks is regular manual detection. Due to the low efficiency of manual detection, low recognition accuracy, high subjectivity, and poor safety, it cannot meet the requirements of rapid detection of pavement cracks. With the advancement of science and technology, image detection technology has developed rapidly. Due to its characterist...

Claims

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Application Information

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IPC IPC(8): G01N21/88G06K9/62G06T5/00
Inventor 李清泉邹勤毛庆洲付智能
Owner WUHAN WUDA ZOYON SCI & TECH
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