Synthetic Data and Computer-Vision-Based Automated Quality Inspection System for Reused Scaffolding

• Published in: Applied sciences 2022-10, Vol.12 (19), p.10097
• Main Authors: Kim, Alexander, Lee, Kyuhyup, Lee, Seojoon, Song, Jinwoo, Kwon, Soonwook, Chung, Suwan
• Format: Article
• Language: English
• Subjects: computer vison; scaffolding; semantic segmentation; synthetic dataset
• ISSN: 2076-3417; 2076-3417
• DOI: 10.3390/app121910097

Regular scaffolding quality inspection is an essential part of construction safety. However, current evaluation methods and quality requirements for temporary structures are based on subjective visual inspection by safety managers. Accordingly, the assessment process and results depend on an inspector’s competence, experience, and human factors, making objective analysis complex. The safety inspections performed by specialized services bring additional costs and increase evaluation times. Therefore, a temporary structure quality and safety evaluation system based on experts’ experience and independent of the human factor is the relevant solution in intelligent construction. This study aimed to present a quality evaluation system prototype for scaffolding parts based on computer vision. The main steps of the proposed system development are preparing a dataset, designing a neural network (NN) model, and training and evaluating the model. Since traditional methods of preparing a dataset are very laborious and time-consuming, this work used mixed real and synthetic datasets modeled in Blender. Further, the resulting datasets were processed using artificial intelligence algorithms to obtain information about defect type, size, and location. Finally, the tested parts’ quality classes were calculated based on the obtained defect values.