{"title":"Hyperbolically-warped cepstral coefficients for improved micro-Doppler classification","authors":"B. Erol, S. Gurbuz","doi":"10.1109/RADAR.2016.7485204","DOIUrl":null,"url":null,"abstract":"Mel-frequency cepstrum coefficients (MFCC) have been used in many recent works as features for micro-Doppler classification. Originally proposed as features for speech recognition, the filter bank applied as part of the computation of the MFCC is designed with spacing according to the mel-frequency scale - a scale based upon the auditory properties of the human ear. However, the frequency composition of micro-Doppler signatures is completely unrelated to the mel-frequency scale. In this work, an alternative set of features computed using a filter bank based on a hyperbolically-warped frequency scale is proposed. A 21.25% increase in the correct classification rate of running, walking, creeping, and crawling is obtained when the proposed hyperbolically-warped cepstral coefficients (HWCC) are used as opposed to MFCC.","PeriodicalId":185932,"journal":{"name":"2016 IEEE Radar Conference (RadarConf)","volume":"241 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE Radar Conference (RadarConf)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RADAR.2016.7485204","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
Mel-frequency cepstrum coefficients (MFCC) have been used in many recent works as features for micro-Doppler classification. Originally proposed as features for speech recognition, the filter bank applied as part of the computation of the MFCC is designed with spacing according to the mel-frequency scale - a scale based upon the auditory properties of the human ear. However, the frequency composition of micro-Doppler signatures is completely unrelated to the mel-frequency scale. In this work, an alternative set of features computed using a filter bank based on a hyperbolically-warped frequency scale is proposed. A 21.25% increase in the correct classification rate of running, walking, creeping, and crawling is obtained when the proposed hyperbolically-warped cepstral coefficients (HWCC) are used as opposed to MFCC.