Digitize-PID: Automatic Digitization of Piping and Instrumentation Diagrams

• URL: http://arxiv.org/abs/2109.03794v1
• Date: Wed, 8 Sep 2021 17:32:49 GMT
• Title: Digitize-PID: Automatic Digitization of Piping and Instrumentation Diagrams
• Authors: Shubham Paliwal, Arushi Jain, Monika Sharma and Lovekesh Vig
• Abstract summary: Digitize-PID comprises of an end-to-end pipeline for detection of core components from P&IDs like pipes, symbols and textual information. A novel and efficient kernel-based line detection and a two-step method for detection of complex symbols based on a fine-grained deep recognition technique is presented. Results show that Digitize-PID outperforms the existing state-of-the-art for P&ID digitization.
• Score: 21.298283130966148
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Digitization of scanned Piping and Instrumentation diagrams(P&ID), widely used in manufacturing or mechanical industries such as oil and gas over several decades, has become a critical bottleneck in dynamic inventory management and creation of smart P&IDs that are compatible with the latest CAD tools. Historically, P&ID sheets have been manually generated at the design stage, before being scanned and stored as PDFs. Current digitization initiatives involve manual processing and are consequently very time consuming, labour intensive and error-prone.Thanks to advances in image processing, machine and deep learning techniques there are emerging works on P&ID digitization. However, existing solutions face several challenges owing to the variation in the scale, size and noise in the P&IDs, sheer complexity and crowdedness within drawings, domain knowledge required to interpret the drawings. This motivates our current solution called Digitize-PID which comprises of an end-to-end pipeline for detection of core components from P&IDs like pipes, symbols and textual information, followed by their association with each other and eventually, the validation and correction of output data based on inherent domain knowledge. A novel and efficient kernel-based line detection and a two-step method for detection of complex symbols based on a fine-grained deep recognition technique is presented in the paper. In addition, we have created an annotated synthetic dataset, Dataset-P&ID, of 500 P&IDs by incorporating different types of noise and complex symbols which is made available for public use (currently there exists no public P&ID dataset). We evaluate our proposed method on this synthetic dataset and a real-world anonymized private dataset of 12 P&ID sheets. Results show that Digitize-PID outperforms the existing state-of-the-art for P&ID digitization.

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