Title
Automatic Annotation of Subsea Pipelines using Deep Learning.
Abstract
Regulatory requirements for sub-sea oil and gas operators mandates the frequent inspection of pipeline assets to ensure that their degradation and damage are maintained at acceptable levels. The inspection process is usually sub-contracted to surveyors who utilize sub-sea Remotely Operated Vehicles (ROVs), launched from a surface vessel and piloted over the pipeline. ROVs capture data from various sensors/instruments which are subsequently reviewed and interpreted by human operators, creating a log of event annotations; a slow, labor-intensive and costly process. The paper presents an automatic image annotation framework that identifies/classifies key events of interest in the video footage viz. exposure, burial, field joints, anodes, and free spans. The reported methodology utilizes transfer learning with a Deep Convolutional Neural Network (ResNet-50), fine-tuned on real-life, representative data from challenging sub-sea environments with low lighting conditions, sand agitation, sea-life and vegetation. The network outputs are configured to perform multi-label image classifications for critical events. The annotation performance varies between 95.1% and 99.7% in terms of accuracy and 90.4% and 99.4% in terms of F1-Score depending on event type. The performance results are on a per-frame basis and corroborate the potential of the algorithm to be the foundation for an intelligent decision support framework that automates the annotation process. The solution can execute annotations in real-time and is significantly more cost-effective than human-only approaches.
Year
DOI
Venue
2020
10.3390/s20030674
SENSORS
Keywords
Field
DocType
visual inspection,sub-sea pipeline survey,multi-label image classification,deep learning,transfer learning
Remotely operated underwater vehicle,Data mining,Pipeline transport,Visual inspection,Automatic image annotation,Annotation,Convolutional neural network,Subsea,Electronic engineering,Artificial intelligence,Deep learning,Engineering
Journal
Volume
Issue
ISSN
20
3.0
1424-8220
Citations 
PageRank 
References 
0
0.34
0
Authors
14