基于图像连通域的桥梁裂缝提取方法研究

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Abstract Cracking is a typical kind of defect present in cement concrete bridges. Image-based bridge crack detection is a new technology for the lossless digital detection of bridge defects. An image-based method is proposed for recognizing and extracting the characteristic parameters of cracks on the bridge surface. Three main processes are aimed at resolving the interference of construction joints, sunlight, defacements, and vibration. First, the characteristics of cracks found in the acquired and de-noised bridge images are analyzed. Second, suspicious cracks are extracted using pixel gray-value comparison. Finally, false cracks are removed through the computed measurement of the connected domain, whereas true cracks are maintained. The qualities of the images are tested, and the results show that the proposed method exhibits robustness and efficiency in detecting bridge cracks.

Key words： bridge engineering bridge crack extraction measurement of connected domain lossless detection for bridge

Received: 11 July 2012

Fund:Supported by the Road and Transport R&D Project for Western Regions of China Commissioned by Ministry of Transport (No.200831822343)

Corresponding Authors: YU Yong-bo, rbstyyb@126.com E-mail: rbstyyb@126.com

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	YU Yong-bo
	LI Wan-heng
	ZHANG Jin-quan
	NIE Jian-guo

Cite this article:

YU Yong-bo,LI Wan-heng,ZHANG Jin-quan, et al. Bridge Crack Extraction Method Based on Image-connected Domain[J]. Journal of Highway and Transportation Research and Development, 2013, 7(1): 34-37.

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http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/ OR http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/Y2013/V7/I1/34

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