Image processing and classification procedure for the analysis of Australian frog vocalisations
Data(s) |
2015
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Resumo |
Frog species have been declining worldwide at unprecedented rates in the past decades. There are many reasons for this decline including pollution, habitat loss, and invasive species [1]. To preserve, protect, and restore frog biodiversity, it is important to monitor and assess frog species. In this paper, a novel method using image processing techniques for analyzing Australian frog vocalisations is proposed. An FFT is applied to audio data to produce a spectrogram. Then, acoustic events are detected and isolated into corresponding segments through image processing techniques applied to the spectrogram. For each segment, spectral peak tracks are extracted with selected seeds and a region growing technique is utilised to obtain the contour of each frog vocalisation. Based on spectral peak tracks and the contour of each frog vocalisation, six feature sets are extracted. Principal component analysis reduces each feature set down to six principal components which are tested for classification performance with a k-nearest neighbor classifier. This experiment tests the proposed method of classification on fourteen frog species which are geographically well distributed throughout Queensland, Australia. The experimental results show that the best average classification accuracy for the fourteen frog species can be up to 87%. |
Formato |
application/pdf |
Identificador | |
Publicador |
ACM |
Relação |
http://eprints.qut.edu.au/89671/1/Image%20processing%20and%20classification%20procesure%20for%20the%20analysis%20of%20Australian%20frog%20vocalisations.pdf http://doi.acm.org/10.1145/2764873.2764878 DOI:10.1145/2764873.2764878 Xie, Jie, Towsey, Michael, Zhang, Jinglan, & Roe, Paul (2015) Image processing and classification procedure for the analysis of Australian frog vocalisations. In Proceedings of the 2nd International Workshop on Environmental Multimedia Retrieval, ACM, Shanghai, China, pp. 15-20. |
Direitos |
Copyright 2015 ACM |
Fonte |
Science & Engineering Faculty |
Palavras-Chave | #050199 Ecological Applications not elsewhere classified #080106 Image Processing #080600 INFORMATION SYSTEMS #audio data classification #image processing #k-nearest neighbor classifier #region growing #spectral peak track |
Tipo |
Conference Paper |