Frequency of Interest-based Noise Attenuation Method to Improve Anomaly Detection Performance
This work provides a practical solution for road surface anomaly detection in outdoor edge computing environments, though it is incremental in nature.
The study tackled the problem of improving anomaly detection in tire friction noise by addressing interference from random wind noise, achieving an average performance improvement of 8.506% through precise driving event extraction.
Accurately extracting driving events is the way to maximize computational efficiency and anomaly detection performance in the tire frictional nose-based anomaly detection task. This study proposes a concise and highly useful method for improving the precision of the event extraction that is hindered by extra noise such as wind noise, which is difficult to characterize clearly due to its randomness. The core of the proposed method is based on the identification of the road friction sound corresponding to the frequency of interest and removing the opposite characteristics with several frequency filters. Our method enables precision maximization of driving event extraction while improving anomaly detection performance by an average of 8.506%. Therefore, we conclude our method is a practical solution suitable for road surface anomaly detection purposes in outdoor edge computing environments.