International Conference on Image Analysis and Processing

ICIAP 2015: New Trends in Image Analysis and Processing -- ICIAP 2015 Workshops pp 401-408

Fractal Nature of Chewing Sounds

  • Vasileios Papapanagiotou
  • Christos Diou
  • Zhou Lingchuan
  • Janet van den Boer
  • Monica Mars
  • Anastasios Delopoulos
Conference paper

DOI: 10.1007/978-3-319-23222-5_49

Volume 9281 of the book series Lecture Notes in Computer Science (LNCS)
Cite this paper as:
Papapanagiotou V., Diou C., Lingchuan Z., van den Boer J., Mars M., Delopoulos A. (2015) Fractal Nature of Chewing Sounds. In: Murino V., Puppo E., Sona D., Cristani M., Sansone C. (eds) New Trends in Image Analysis and Processing -- ICIAP 2015 Workshops. ICIAP 2015. Lecture Notes in Computer Science, vol 9281. Springer, Cham

Abstract

In the battle against Obesity as well as Eating Disorders, non-intrusive dietary monitoring has been investigated by many researchers. For this purpose, one of the most promising modalities is the acoustic signal captured by a common microphone placed inside the outer ear canal. Various chewing detection algorithms for this type of signals exist in the literature. In this work, we perform a systematic analysis of the fractal nature of chewing sounds, and find that the Fractal Dimension is substantially different between chewing and talking. This holds even for severely down-sampled versions of the recordings. We derive chewing detectors based on the the fractal dimension of the recorded signals that can clearly discriminate chewing from non-chewing sounds. We experimentally evaluate snacking detection based on the proposed chewing detector, and we compare our approach against well known counterparts. Experimental results on a large dataset of 10 subjects and total recordings duration of more than 8 hours demonstrate the high effectiveness of our method. Furthermore, there exists indication that discrimination between different properties (such as crispness) is possible.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Vasileios Papapanagiotou
    • 1
  • Christos Diou
    • 1
  • Zhou Lingchuan
    • 2
  • Janet van den Boer
    • 3
  • Monica Mars
    • 3
  • Anastasios Delopoulos
    • 1
  1. 1.Aristotle University of ThessalonikiThessalonikiGreece
  2. 2.CSEM SALandquartSwitzerland
  3. 3.Wagenigen UniversityWagenigenNetherlands