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Figure 21. Spliced image of weld joint with crack defects in grayscale mode; meanwhile, the presence of black region in the image is due
to the absence of cross area in the original photographs.
DECLARATIONS
Acknowledgments
This research was supported by the National Basic Scientific Research Project of China (Grant No.
JCKY2020607B003). The authors gratefully acknowledge this funding, which was instrumental in the
study’s design, data collection, and analysis.
Authors’ contributions
Writing - original draft preparation, conceptualization, methodology, data curation, investigation, formal
analysis: Zhang S
Writing - original draft preparation, supervision, methodology, editing, validation, project administration,
funding acquisition: Wang WY
Data curation, investigation, formal analysis, writing - original draft preparation: Wang X, Li G, Ren Y
Conceptualization, methodology, editing, methodology, project administration: Gao X
Conceptualization, supervision, methodology, editing, validation, project administration: Sun F, Tang B
Supervision, conceptualization, methodology, editing, methodology, project administration: Song H
Supervision, conceptualization, methodology, editing, methodology, project administration, funding
acquisition: Li J
All authors have read and agreed to the published version of the manuscript.
