• Corpus ID: 202542656

Automatic detection of estuarine dolphin whistles in spectrogram images

  title={Automatic detection of estuarine dolphin whistles in spectrogram images},
  author={O. M. Serra and F. P. R. Martins and Linilson Rodrigues Padovese},
An algorithm for detecting tonal vocalizations from estuarine dolphin (Sotalia guianensis) specimens without interference of a human operator is developed. The raw audio data collected from a passive monitoring sensor in the Cananeia underwater soundscape is converted to spectrogram images, containing the desired acoustic event (whistle) as a linear pattern in the images. Detection is a four-step method: first, ridge maps are obtained from the spectrogram images; second, a probabilistic Hough… 
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