A visual inspection method for delamination extraction and quantification of carbon fiber reinforced plastic (CFRP)

J Cui, W Liu, Y Zhang, L Han, P Yin, Y Li, M Zhou… - Measurement, 2022 - Elsevier
Inspection the delamination of composite components is essential to ensure the safety of
aircraft in service. Vision inspection has great potential for the drilling quality inspection of …

Robust statistical approaches for circle fitting in laser scanning three-dimensional point cloud data

A Nurunnabi, Y Sadahiro, DF Laefer - Pattern Recognition, 2018 - Elsevier
This paper explores the problem of circle fitting for incomplete (partial arc) laser scanning
point cloud data in the presence of outliers. In mobile laser scanning, data are commonly …

Automatic modeling of prefabricated components with laser‐scanned data for virtual trial assembly

D Li, J Liu, L Feng, Y Zhou, H Qi… - Computer‐Aided Civil …, 2021 - Wiley Online Library
Virtual trial assembly (VTA) simulates the preassembly by verifying the correspondence of
as‐built and as‐designed prefabricated component (PC) models in virtual reality. Notably …

Automated locating of replaceable coupling steel beam using terrestrial laser scanning

X Zhou, J Liu, G Cheng, D Li, YF Chen - Automation in Construction, 2021 - Elsevier
The replaceable coupling steel beam (RCSB) is an optimal component of earthquake-
resilient structures. In practice, the RCSB is connected to RC shear wall using numerous …

Weighted least-squares fitting of circles with variance component estimation

X Fang, Y Hu, W Zeng, O Akyilmaz - Measurement, 2022 - Elsevier
Although the least-squares (LS) circle fit has been widely used, the weighted LS fitting of
circle is not thoroughly investigated, in particular, when the prior weight information is only …

Weighted geometric circle fitting for the Brogar Ring: Parameter-free approach and bias analysis

Y Hu, X Fang, Y Qin, O Akyilmaz - Measurement, 2022 - Elsevier
Geometric circle fitting is a fundamental task in scientific and engineering research. In this
contribution, a parameter-free approach for weighted geometric circle fitting is proposed …

Fast and almost unbiased weighted least squares fitting of circles

P Xu - Measurement, 2023 - Elsevier
The algebraic fitting of circles was first proposed by Delogne (1972) and Kasa (1976). We
extend the work by Delogne (1972) and Kasa (1976) and propose fast and almost unbiased …

Non-contact articulated robot-integrated gap and flushness measurement system for automobile assembly

J Kholkhujaev, G Maculotti, G Genta, M Galetto… - IEEE …, 2022 - ieeexplore.ieee.org
The paper proposes and metrologically characterizes a gap and flushness optical
measurement system based on machine vision. The system is developed for an operator …

Efficient conic fitting with an analytical Polar-N-Direction geometric distance

Y Wu, H Wang, F Tang, Z Wang - Pattern Recognition, 2019 - Elsevier
Fitting conics from images is a preliminary step for its plentiful applications. It is a common
sense that geometric distance based fitting methods are better than algebraic distance …

[HTML][HTML] Evaluating surface roughness of curved surface with circular profile based on arithmetic circular arc fitting

J Li, W Xu, T Shen, W **, C Wu - AIP Advances, 2023 - pubs.aip.org
A procedure based on Kåsa fit for evaluating the surface roughness of a curved surface with
a circular arc profile was suggested in this paper. To investigate the effectiveness of the …