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A Method for Processing Pavement Crack Image

A technology for pavement cracks and processing methods, which is applied in image data processing, image analysis, instruments, etc., can solve problems such as the impact of cracks, and achieve the effects of overcoming interference, eliminating adverse effects, and fast calculation speed

Active Publication Date: 2021-09-07
SOUTHEAST UNIV
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Problems solved by technology

These interference factors will have a significant impact on the extraction of fractures

Method used

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  • A Method for Processing Pavement Crack Image
  • A Method for Processing Pavement Crack Image
  • A Method for Processing Pavement Crack Image

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Embodiment Construction

[0034] This embodiment is based on the following assumptions to realize the image segmentation of the pavement crack image:

[0035] 1. Crack pixels are deeper than road pixels;

[0036] 2. The gray distribution of road cracks and road surface is independent;

[0037] 3. A crack is a narrow, continuous target object;

[0038] 4. A crack is a group of interconnected segments with different directions;

[0039] 5. The width of a crack is not constant over the entire length;

[0040] Based on the above assumptions, the similarity in gray value between pavement cracks and pavement is used. This embodiment uses an iterative method to gradually process the pavement crack image, obtain the seed image, remove the noise, and then perform regional seed growth on the pavement crack image with the "growth fence" to obtain the segmentation effect. This embodiment does not rely on gray The gray histogram of high-resolution images also has good adaptability to low-contrast and uneven ill...

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Abstract

The invention discloses a method for processing pavement crack images, which mainly includes the following contents: 1. Through an iterative process, the pavement crack image is processed by using the maximum class variance method, and the unconfident region in each iteration result is placed in the pavement crack image 2. Fewer iterations are used as a preprocessing algorithm for pavement crack images; 3. Excessive iterations are performed on pavement crack images, and the result is processed as a seed image to eliminate small areas in the seed image, and use edge detection algorithm , set the "growth fence" in the pavement crack image, and finally complete the image segmentation through the region seed growth. The pavement crack image processing method proposed by the present invention significantly improves the image preprocessing effect and image segmentation effect, overcomes the interference of noise in the image, has high calculation efficiency, and has strong robustness and stable performance. The intelligent identification and statistics of pavement crack disease improves the identification accuracy and statistical efficiency of pavement crack disease.

Description

technical field [0001] The invention belongs to the field of road engineering and image processing technology, and in particular relates to a method for processing road surface crack images. Background technique [0002] As of the end of 2016, the total mileage of national highways reached 130,000 kilometers, ranking first in the world. The large-scale construction of highways not only affects economic development, but also affects people's daily life, which makes the detection and maintenance management of highways increasingly important and urgent. At present, with the development of sensor, automatic control, computer and other technologies, the automatic collection equipment of pavement images has become mature, but the crack identification in the later stage still adopts the combination of human and machine or even completely manual, which has a large workload and low efficiency. Developing an algorithm for the pavement crack images collected by the detection vehicle, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/10G06T7/13
Inventor 顾兴宇邓涵宇王晓威倪富健
Owner SOUTHEAST UNIV
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