In-Su Han, Myung-Il Roh, Min-Chul Kong, “An Automated Method for Converting P&IDs in Shipbuilding to Structured Graphs”, International Journal of Naval Architecture and Ocean Engineering, Vol. 17, pp. 100696.1-20, 2025.10.04
International Journal
2025.10.03 04:40
In-Su Han, Myung-Il Roh, Min-Chul Kong, “An Automated Method for Converting P&IDs in Shipbuilding to Structured Graphs”, International Journal of Naval Architecture and Ocean Engineering, Vol. 17, pp. 100696.1-20, 2025.10.04
조회 수 243
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| Abstract | The P&ID (Piping and Instrumentation Diagram) is an essential drawing used to understand the structure and interconnections of systems within a ship. It serves a critical role throughout the entire lifecycle, from design to maintenance. However, because P&IDs express complex engineering information using simplified symbols, lines, and text, manual interpretation is typically required, which poses challenges such as high expertise demands, time consumption, and inconsistency depending on the individual engineer’s interpretation. In this study, we proposed a method for automatically analyzing the interconnections between equipment and piping from P&IDs in both image and DXF (Drawing eXchange Format) formats, considering the distinct characteristics and limi- tations of each format, and converting them into a normalized graph structure. First, deep learning-based object detection was applied to image-formatted P&IDs to automatically detect various symbols and extract their classes and position information. Among the models tested, Cascade R-CNN demonstrated the best detection perfor- mance. Subsequently, entities such as lines and text were extracted from DXF-formatted P&IDs, and algorithms were developed to filter out significant lines and automatically determine branch relationships. Finally, the key components extracted from the P&ID were defined as nodes, and the interconnections between them were defined as edges to form a structured graph. Experimental results using test P&IDs confirmed that the proposed method could accurately identify interconnections and convert them into a structured graph even in environ- ments that reflect real-world drawing conventions. As a result, the proposed method significantly improves upon the previously manual and repetitive interpretation process. It establishes a foundation for utilizing structured graph data in a wide range of future design and operational support applications by converting P&ID information into digital and normalized data. |
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| Publication Date | 2025-10-04 |
| Role | Corresponding Author |
| Category | SCIE |
| Impact Factor | 3.9 |
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Yun-Sik Kim, Myung-Il Roh, Ha-Yun Kim, In-Chang Yeo, Nam-Sun Son, "A Method of Learning-based Tracking for Maritime Obstacles Using a Transformer", accepted for publication in Ocean Engineering, 2026.07.07
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Hyewon Lee, Myung-Il Roh, Yerin Kim, "Hybrid Multibody Dynamics-based Model Predictive Control of Suspended Blocks for Floating Cranes in Waves", accepted for publication in Journal of Computational Design and Engineering, 2026.07.01
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Ha-Yun Kim, Myung-Il Roh, Yeong-Min Jo, Hye-Won Lee, Yun-Sik Kim, In-Chang Yeo, "A Track-to-track Fusion Method for Tracking Maritime Obstacles", International Journal of Naval Architecture and Ocean Engineering, 2026.06.20
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In-Chang Yeo, Myung-Il Roh, Yun-Sik Kim, A Method for Generating a 3D Environmental Map Using a Stereo Camera for Autonomous Berthing of an Unmanned Surface Vehicle", International Journal of Naval Architecture and Ocean Engineering, 2026.05.23
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Min-Chul Kong, Myung-Il Roh, In-Su Han, Seong-Won Choi, Jeongyeon Kim, “A Method for Transferring Piping Designs Using Past Project Data in Shipbuilding”, International Journal of Naval Architecture and Ocean Engineering, 2026.03.02
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Dong-Woo Kim, Myung-Il Roh, Yong-Tai Kim, Minkyu Park, Mun-gwan Choi, Jin-Hyeok Kim, "A Nonlinear Methodology for the Sloshing Assessment in the Membrane-type LNG Cargo Containment System", accepted for publication in Ocean Engineering, 2025.12.29
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In-Su Han, Myung-Il Roh, Min-Chul Kong, "A RAG-based Q&A System for Ship Regulations Applying Domain Adaptation", International Journal of Naval Architecture and Ocean Engineering, Vol. 18, pp. 100735.1-18, 2025.12.23
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Hyun Soo Kim, Myung-Il Roh, "Data-driven Model for Predicting Tank Pressure of an LNG Carrier Considering Environmental Effects", International Journal of Naval Architecture and Ocean Engineering, Vo.l. 18, 2026.01.01
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In-Chang Yeo, Myung-Il Roh, Yun-Sik Kim, Ha-Yun Kim, Do-Hyeok Ahn, Nam-Sun Son, "A Localization Method of Nearby Ships Based on 3D Object Detection Using a Camera", International Journal of Naval Architecture and Ocean Engineering, 2025.11.12
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Seong-Won Choi, Myung-Il Roh, In-Chang Yeo, Won-Chul Yoo, Seon-Do Han, "A Route Planning Method for Small Ships Based on Historical AIS Data", Ocean Engineering, Vol. 343, Part 3, 123372, 2026.01.15
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In-Su Han, Myung-Il Roh, Min-Chul Kong, “An Automated Method for Converting P&IDs in Shipbuilding to Structured Graphs”, International Journal of Naval Architecture and Ocean Engineering, Vol. 17, pp. 100696.1-20, 2025.10.04
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In-Chang Yeo, Myung-Il Roh, Dong-Guen Jeong, Jun-Sik Lee, "A Route Planning Method for Small Ships Inside the Marina", International Journal of Naval Architecture and Ocean Engineering, Vol. 17, pp. 100684.1-16, 2025.08.13
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Jin-Hyeok Kim, Myung-Il Roh, In-Chang Yeo, “An MLP (Multi-Layer Perceptron)-Based Method for Optimizing Multiple Hull Forms at Once Using Surrogate Modeling with Geometric Moments”, Ocean Engineering, Vol. 339, Part 1, 2025.11.15
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Yun-Sik Kim, Myung-Il Roh, Ha-Yun Kim, In-Chang Yeo, "An Improved Method of Detecting the Horizon for Tracking Maritime Obstacles", Ocean Systems Engineering, Vol. 15, No. 2, pp. 219-239, 2025.06.30
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In-Su Han, Myung-Il Roh, Min-Chul Kong, Seoyoon Park, Jeongyoul Lee, "Search Method for Ship Regulations Based on Semantic Similarity Using Natural Language Processing", Ships and Offshore Structures, 2025.05.12
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Min-Chul Kong, Myung-Il Roh, In-Su Han, ..., "A Representation Method of Pipe Connections and Routing Space in Pipe Auto-routing Using Graph and Octree Structures", Ocean Engineering, Vol. 329, 121204, pp. 1-18, 2025.06.15
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Jin-Hyeok Kim, Myung-Il Roh, In-Chang Yeo, “A Method for Generating Multiple Hull Forms at Once Using MLP (Multi-Layer Perceptron)”, Ocean Engineering, Vol. 324, pp. 120659.1-20, 2025.04.30
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Dong-Guen Jeong, Myung-Il Roh, In-Chang Yeo, Ki-Su Kim, Jun-Sik Lee, “A Route Planning Method for Small Ships in Coastal Areas Based on Quadtree”, IJNAOE, Vol. 17, pp. 100647.1-17, 2025.02.03
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Ki-Su Kim, Myung-Il Roh, “Review of Ship Arrangement Design Using Optimization Methods”, Journal of Computational Design and Engineering, Vol. 12, No. 1, pp. 100-121, 2025.01.31
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Dong-Woo Kim, Myung-Il Roh, Do-Hyun Chun, Sun-Hong Woo, Yong-Tai Kim, “A Method for the Profile Optimization of the Primary Barrier of a Membrane-type LNG Tank Using Surrogate Modeling”, Ocean Engineering, Vol. 317, 2025.02.01
