An effective method of weld defect detection and classification based on machine vision

J Sun, C Li, XJ Wu, V Palade… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
In order to effectively identify and classify weld defects of thin-walled metal canisters, a weld
defect detection and classification algorithm based on machine vision is proposed in this …

Semantic segmentation of metal surface defects and corresponding strategies

Z Zhang, W Wang, X Tian - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Facing the demand of the industry for metal surface detection, this article addresses the
segmentation of metal surface defects. Metal surface defect segmentation has many …

Laser vision seam tracking system based on image processing and continuous convolution operator tracker

Y Zou, T Chen - Optics and Lasers in Engineering, 2018 - Elsevier
To address the problem of low welding precision caused by the poor real-time tracking
performance of common welding robots, a novel seam tracking system with excellent real …

Computer vision system for welding inspection of liquefied petroleum gas pressure vessels based on combined digital image processing and deep learning …

YJ Cruz, M Rivas, R Quiza, G Beruvides, RE Haber - Sensors, 2020 - mdpi.com
One of the most important operations during the manufacturing process of a pressure vessel
is welding. The result of this operation has a great impact on the vessel integrity; thus …

A structured light vision sensor for on-line weld bead measurement and weld quality inspection

Y Han, J Fan, X Yang - The International Journal of Advanced …, 2020 - Springer
Weld bead measurement and weld quality inspection are important parts in industrial
welding. In this paper, a structured light vision sensor is developed to achieve on-line weld …

Detection of micro-defects on metal screw surfaces based on deep convolutional neural networks

L Song, X Li, Y Yang, X Zhu, Q Guo, H Yang - Sensors, 2018 - mdpi.com
This paper proposes a deep convolutional neural network (CNN)-based technique for the
detection of micro defects on metal screw surfaces. The defects we consider include surface …

3DSMDA-Net: An improved 3DCNN with separable structure and multi-dimensional attention for welding status recognition

T Liu, J Wang, X Huang, Y Lu, J Bao - Journal of Manufacturing Systems, 2022 - Elsevier
The vision-based welding status recognition (WSR) provides a basis for online welding
quality control. Due to the severe arc and fume interference in the welding area and limited …

Cross-lines laser aided machine vision in tube-to-tubesheet welding for welding height control

T Lei, W Wang, Y Rong, P Xiong, Y Huang - Optics & Laser Technology, 2020 - Elsevier
Thermal distortion was a major issue in sheet metal welding. One particular issue to be
addressed in this work for tube-to-tubesheet welding was the resultant variation in the …

Defect detection method using laser vision with model-based segmentation for laser brazing welds on car body surface

S Hua, B Li, L Shu, P Jiang, S Cheng - Measurement, 2021 - Elsevier
This paper proposes a defect detection method using laser vision with model-based
segmentation for laser brazing welds on car body surface, in which a dynamic ideal surface …

A 3D reconstruction method based on grid laser and gray scale photo for visual inspection of welds

N Jia, Z Li, J Ren, Y Wang, L Yang - Optics & Laser Technology, 2019 - Elsevier
Three-dimensional reconstruction of the weld surface is critical for online visual inspection of
welds. A new three-dimensional reconstruction algorithm is proposed by fusion analysis of …