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Content Provider | IEEE Xplore Digital Library |
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Author | Wu Ting Lu Shaohui Tang Yiping |
Copyright Year | 2015 |
Description | Author affiliation: Zhejiang Univ. of Technol., Hangzhou, China (Wu Ting; Lu Shaohui; Tang Yiping) |
Abstract | To ensure the safety and serviceability of underground pipeline, it is essential to inspect and assess its structural and functional condition. Underground pipe inner-surface defect inspection is constrained by space accessibility. Thus, in this work we propose a comprehensive in-pipe inspection method based on active stereo omnidirectional vision. In our system, a crawling robot equipped with an active stereo omnidirectional vision sensor travels along the pipeline, taking panoramic images of the internal surface and laser streaks projected from an omnidirectional laser in real time. Afterwards, the internal surface panoramic images are disposed as follows: unwrapping, pre-processing and geometrical features extraction of the defect region, ultimately we classify the defects' category and degree. On the other hand, image sequences with laser streaks are used to extract 3D point cloud data of the inner-surface and calculate the deformation rate of the pipe, this part is not included in this paper. Experimental results show that our system is capable to achieve a qualitative and quantitative analysis of the in-pipe defects such as crack and corrosion, and provide a new approach for inspection of the in-pipe internal surface defects. |
Starting Page | 2637 |
Ending Page | 2641 |
File Size | 207865 |
Page Count | 5 |
File Format | |
e-ISBN | 9781467376822 |
DOI | 10.1109/FSKD.2015.7382373 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2015-08-15 |
Publisher Place | China |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Visualization visual 3D measure Three-dimensional displays Corrosion omnidirectional laser vision Pipelines in-pipe defects inspection Inspection Robot sensing systems Vehicles active stereo omnidirectional vision |
Content Type | Text |
Resource Type | Article |
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