Structure Analysis of the FRP Rebar Using Computer Vision Techniques
This addresses a domain-specific problem in materials engineering for structural analysis of composite rebars, representing an incremental improvement.
The paper tackles the problem of analyzing the internal structure of composite FRP rebar by measuring the shift between the real center of gravity and the geometrical center, along with cross-sectional characteristics, using an automated computer vision pipeline based on the ratio of glass fibers to epoxy filament.
In this paper we present a method to analyze the inner structure of the composite FRP rebar, namely the shift of the real center of gravity with a respect to the geometrical center of rebar and changes of cross-sectional characteristics. We propose an automated pipeline based on classical computer vision techniques and on the ratio between the glass fibers and epoxy filament in the analyzed cross-section to compute the shift vector of the real center of gravity in respect to the geometrical center together with the cross-section area and its principal moments. We discuss the achieved results over two cross sections in a different portion of the rebar and in the end, we suggest possible direction and improvements for our future work. We also made our code publicly available.