3-D infinite frequency resolution analysis and spatiotemporal spectrum of a moving object

Ueda Takaaki*, Hirobayashi Shigeki

*この論文の責任著者

研究成果: 書籍の章/レポート/会議録会議への寄与査読

抄録

A movie may be represented as a three-dimensional (3-D) signal and as a spatiotemporal spectrum in a 3-D frequency domain. Most spatiotemporal spectra lie on a theoretical motion plane when an object moves at a uniform velocity in a movie. By calculating the slope of this plane, we can estimate the velocity of the moving object. However, the spatiotemporal spectrum of a frequency analysis method such as a Fast Fourier Transform (FFT), is not always distributed on the theoretical motion plane and depends on the resolution of the frequency analysis method used. Consequently, FFT methods cannot be used for accurate analysis because of the influence of the analysis window. In this study, we develop 3-D infinite frequency resolution analysis (IFRA) by extending IFRA as a high-frequency resolution analysis method. To confirm how close the spectrum exists to the theoretical motion plane, we compare 3-D IFRA with 3-D FFT by calculating the variance. It is found that most of the 3-D IFRA spectra are almost on the theoretical motion plane.

本文言語英語
ホスト出版物のタイトルProceedings of the 2009 2nd International Congress on Image and Signal Processing, CISP'09
DOI
出版ステータス出版済み - 2009
イベント2009 2nd International Congress on Image and Signal Processing, CISP'09 - Tianjin, 中国
継続期間: 2009/10/172009/10/19

出版物シリーズ

名前Proceedings of the 2009 2nd International Congress on Image and Signal Processing, CISP'09

学会

学会2009 2nd International Congress on Image and Signal Processing, CISP'09
国/地域中国
CityTianjin
Period2009/10/172009/10/19

ASJC Scopus 主題領域

  • コンピュータ ビジョンおよびパターン認識
  • 信号処理
  • 生体医工学

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