The authors wish to make the following correction to this paper [1].
Figure 13b should be replaced by the following picture:

The authors apologize for any inconvenience caused and state that the scientific conclusions are unaffected. The original article has been updated.
Reference
- Pham, H.C.; Ta, Q.-B.; Kim, J.-T.; Ho, D.-D.; Tran, X.-L.; Huynh, T.-C. Bolt-Loosening Monitoring Framework Using an Image-Based Deep Learning and Graphical Model. Sensors 2020, 20, 3382. [Google Scholar] [CrossRef] [PubMed]
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