Wavelet analysis of ammonoid sutures

Takao Ubukata, Kazushige Tanabe, Yasunari Shigeta, Haruyoshi Maeda, Royal H. Mapes

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A morphometric method based on a continuous wavelet transform is introduced for describing the form of ammonoid suture lines. A series of y-coordinate data along the suture line placed in a common reference system was used as the descriptor function of the cumulative chordal length along the suture line. The wavelet transform is defined as an inner product between the descriptor function and a finite-length localized waveform, termed a "daughter wavelet." The absolute values of wavelet transforms, or amplitudes, were computed for individual daughter wavelets with various wavelengths and positions, and a series of amplitudes for different frequencies was used as a shape function in characterizing the suture shape and was summarized into a few principal components.

Original languageEnglish
JournalPalaeontologia Electronica
Volume17
Issue number1
DOIs
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Oceanography

Fingerprint Dive into the research topics of 'Wavelet analysis of ammonoid sutures'. Together they form a unique fingerprint.

  • Cite this

    Ubukata, T., Tanabe, K., Shigeta, Y., Maeda, H., & Mapes, R. H. (2014). Wavelet analysis of ammonoid sutures. Palaeontologia Electronica, 17(1). https://doi.org/10.26879/381