Automatic Information Extraction from Piping and Instrumentation Diagrams

Rohit Rahul, Shubham Paliwal, Monika Sharma, Lovekesh Vig

2019

Abstract

One of the most common modes of representing engineering schematics are Piping and Instrumentation diagrams (P&IDs) that describe the layout of an engineering process flow along with the interconnected process equipment. Over the years, P&ID diagrams have been manually generated, scanned and stored as image files. These files need to be digitized for purposes of inventory management and updation, and easy reference to different components of the schematics. There are several challenging vision problems associated with digitizing real world P&ID diagrams. Real world P&IDs come in several different resolutions, and often contain noisy textual information. Extraction of instrumentation information from these diagrams involves accurate detection of symbols that frequently have minute visual differences between them. Identification of pipelines that may converge and diverge at different points in the image is a further cause for concern. Due to these reasons, to the best of our knowledge, no system has been proposed for end-to-end data extraction from P&ID diagrams. However, with the advent of deep learning and the spectacular successes it has achieved in vision, we hypothesized that it is now possible to re-examine this problem armed with the latest deep learning models. To that end, we present a novel pipeline for information extraction from P&ID sheets via a combination of traditional vision techniques and state-of-the-art deep learning models to identify and isolate pipeline codes, pipelines, inlets and outlets, and for detecting symbols. This is followed by association of the detected components with the appropriate pipeline. The extracted pipeline information is used to populate a tree-like data structure for capturing the structure of the piping schematics. We have also evaluated our proposed method on a real world dataset of P&ID sheets obtained from an oil firm and have obtained extremely promising results. To the best of our knowledge, this is the first system that performs end-to-end data extraction from P&ID diagrams.

Paper Citation

in Harvard Style

Rahul R., Paliwal S., Sharma M. and Vig L. (2019). Automatic Information Extraction from Piping and Instrumentation Diagrams.In Proceedings of the 8th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM, ISBN 978-989-758-351-3, pages 163-172. DOI: 10.5220/0007376401630172

in Bibtex Style

@conference{icpram19,
author={Rohit Rahul and Shubham Paliwal and Monika Sharma and Lovekesh Vig},
title={Automatic Information Extraction from Piping and Instrumentation Diagrams},
booktitle={Proceedings of the 8th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM,},
year={2019},
pages={163-172},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007376401630172},
isbn={978-989-758-351-3},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 8th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM,
TI - Automatic Information Extraction from Piping and Instrumentation Diagrams
SN - 978-989-758-351-3
AU - Rahul R.
AU - Paliwal S.
AU - Sharma M.
AU - Vig L.
PY - 2019
SP - 163
EP - 172
DO - 10.5220/0007376401630172