TY - GEN
T1 - Walking motion analysis using 3D non-harmonic analysis
AU - Fujii, Kenta
AU - Ueda, Takaaki
AU - Hirobayashi, Shigeki
AU - Yoshizawa, Toshio
AU - Misawa, Tadanobu
PY - 2011
Y1 - 2011
N2 - The spatiotemporal spectra of a video that contains a moving object form a plane in the three-dimensional (3D) frequency domain. This plane, which is referred to as the theoretical motion plane, reflects the velocity, which is calculated from the slope, of the moving objects. In the present paper, we propose a high-resolution frequency analysis method, referred to as 3D non-harmonic analysis (NHA), which is only weakly influenced by the analysis window. In addition, we estimate the motion vectors of objects in a video using the plane-clustering method, in conjunction with the least-squares method (LSM), for 3D NHA spatiotemporal spectra. In experiments, we verify the accuracy of 3D NHA and its usefulness for a sequence containing complex motions, such as cross-over motion, by comparison with 3D fast Fourier transform (FFT). The experimental results show that increasing the frequency resolution contributes to high-accuracy estimation of a motion plane.
AB - The spatiotemporal spectra of a video that contains a moving object form a plane in the three-dimensional (3D) frequency domain. This plane, which is referred to as the theoretical motion plane, reflects the velocity, which is calculated from the slope, of the moving objects. In the present paper, we propose a high-resolution frequency analysis method, referred to as 3D non-harmonic analysis (NHA), which is only weakly influenced by the analysis window. In addition, we estimate the motion vectors of objects in a video using the plane-clustering method, in conjunction with the least-squares method (LSM), for 3D NHA spatiotemporal spectra. In experiments, we verify the accuracy of 3D NHA and its usefulness for a sequence containing complex motions, such as cross-over motion, by comparison with 3D fast Fourier transform (FFT). The experimental results show that increasing the frequency resolution contributes to high-accuracy estimation of a motion plane.
KW - Clustering methods
KW - Image motion analysis
KW - Least squares methods
UR - http://www.scopus.com/inward/record.url?scp=84855580202&partnerID=8YFLogxK
U2 - 10.1109/CISP.2011.6099979
DO - 10.1109/CISP.2011.6099979
M3 - 会議への寄与
AN - SCOPUS:84855580202
SN - 9781424493067
T3 - Proceedings - 4th International Congress on Image and Signal Processing, CISP 2011
SP - 446
EP - 450
BT - Proceedings - 4th International Congress on Image and Signal Processing, CISP 2011
T2 - 4th International Congress on Image and Signal Processing, CISP 2011
Y2 - 15 October 2011 through 17 October 2011
ER -