Unsupervised Saliency Detection of Rail Surface Defects.pdf (3.63 MB)
Unsupervised saliency detection of rail surface defects using stereoscopic images
journal contributionposted on 2020-12-07, 11:45 authored by Menghui Niu, Kechen Song, Liming Huang, Qi Wang, Yunhui Yan, Qinggang MengQinggang Meng
Visual information is increasingly recognized as a useful method to detect rail surface defects due to its high efficiency and stability. However, it cannot sufficiently detect a complete defect in the complex background information. The addition of surface profiles can effectively improve this by including a 3-D information of defects. However, in high-speed detection, the traditional 3-D profile acquisition is difficult and separate from the image acquisition, which cannot satisfy the above-mentioned requirements effectively. Therefore, an unsupervised stereoscopic saliency detection method based on a binocular line-scanning system is proposed in this article. This method can simultaneously obtain a highly precise image as well as profile information while also avoids the decoding distortion of the structured light reconstruction method. In our method, a global low-rank nonnegative reconstruction algorithm with a background constraint is proposed. Unlike the low-rank recovery model, the algorithm has a more comprehensive low rank and background clustering properties. Furthermore, outlier detection based on the geometric properties of the rail surface is also proposed in this method. Finally, the image saliency results and depth outlier detection results are associated with the collaborative fusion, and a dataset (RSDDS-113) containing the rail surface defects is established for the experimental verification. The experimental results demonstrate that our method can obtain a mean absolute error of 0.09 and area under the ROC curve of 0.94, better than 15 state-of-the-art algorithms.
National Natural Science Foundation of China under Grant 51805078 and Grant 51374063
National Key Research and Development Program of China under Grant 2017YFB0304200
- Computer Science
Published inIEEE Transactions on Industrial Informatics
Pages2271 - 2281
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
- AM (Accepted Manuscript)
Rights holder© IEEE
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