Optical Character Recognition of Building Equipment Nameplate: Applicability Review and Development of Post-processing Method

Gwan-Yong Park; Yong-Ha Lee; Chang-Yoon Yang; Chang-Young Park

doi:10.22696/jkiaebs.20220039

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2022 Vol.16, Issue 6 Preview Page Next Page

Research Article

Optical Character Recognition of Building Equipment Nameplate: Applicability Review and Development of Post-processing Method 건물 설비 명판의 광학문자인식 적용성 검토 및 후처리 방법 개발

30 December 2022. pp. 465-475

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Abstract

Building energy audit is an essential step in retrofitting old buildings. Reading nameplates to investigate the specification of the equipment is labor-intensive. In this study, the possibility of the automatic recognition of nameplates by OCR (Optical Character Recognition) was reviewed. The key and value text are written sequentially on the nameplate. Taking this into consideration, the value text was recognized from the text and bounding box of the detected key. To improve the accuracy, a post-process was developed to correct the bounding box and character recognition results. The accuracy of value character recognition before and after post-processing was evaluated as 0.658 and 0.850 respectively.

Keywords

Optical Character Recognition

Building Energy Audit

Building Equipment

키워드

광학문자인식

건물 에너지 검진

건물 설비

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Information

Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
Publisher(Ko) :한국건축친환경설비학회
Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
Journal Title(Ko) :한국건축친환경설비학회논문집
Volume : 16
No :6
Pages :465-475
Received Date : 2022-10-07
Revised Date : 2022-11-07
Accepted Date : 2022-11-08
DOI :https://doi.org/10.22696/jkiaebs.20220039

Journal of Korean Institute of Architectural Sustainable Environment and Building Systems ISSN:1976-6483(Print) 2586-0666(Online) 한국건축친환경설비학회논문집

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