摘要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.
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.
于泳波, 李万恒, 张劲泉, 聂建国. 基于图像连通域的桥梁裂缝提取方法研究[J]. Journal of Highway and Transportation Research and Development, 2013, 7(1): 34-37.
YU Yong-bo, LI Wan-heng, ZHANG Jin-quan, NIE Jian-guo. Bridge Crack Extraction Method Based on Image-connected Domain. Journal of Highway and Transportation Research and Development, 2013, 7(1): 34-37.
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