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6 July 2015 A novel murmur-based heart sound feature extraction technique using envelope-morphological analysis
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Proceedings Volume 9631, Seventh International Conference on Digital Image Processing (ICDIP 2015); 96311S (2015) https://doi.org/10.1117/12.2197109
Event: Seventh International Conference on Digital Image Processing (ICDIP15), 2015, Los Angeles, United States
Abstract
Auscultation of heart sound (HS) signals serves as an important primary approach to diagnose cardiovascular diseases (CVDs) for centuries. Confronting the intrinsic drawbacks of traditional HS auscultation, computer-aided automatic HS auscultation based on feature extraction technique has witnessed explosive development. Yet, most existing HS feature extraction methods adopt acoustic or time-frequency features which exhibit poor relationship with diagnostic information, thus restricting the performance of further interpretation and analysis. Tackling such a bottleneck problem, this paper innovatively proposes a novel murmur-based HS feature extraction method since murmurs contain massive pathological information and are regarded as the first indications of pathological occurrences of heart valves. Adapting discrete wavelet transform (DWT) and Shannon envelope, the envelope-morphological characteristics of murmurs are obtained and three features are extracted accordingly. Validated by discriminating normal HS and 5 various abnormal HS signals with extracted features, the proposed method provides an attractive candidate in automatic HS auscultation.
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Hao-Dong Yao, Jia-Li Ma, Bin-Bin Fu, Hai-Yang Wang, and Ming-Chui Dong "A novel murmur-based heart sound feature extraction technique using envelope-morphological analysis", Proc. SPIE 9631, Seventh International Conference on Digital Image Processing (ICDIP 2015), 96311S (6 July 2015); https://doi.org/10.1117/12.2197109
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