Gait analysis in frequency domain

I am doing a project on gait analysis . Although , a lot of ways of doing gait analysis are there , I am a bit confused about what exactly gait analysis in frequency domain means ? Is it the analysis of silhouette images in terms of 2-D discrete Fourier transform or the cyclic variation of features of the subject's body taken as a periodic 1 dimensional sequence ? I would be really grateful for finding answers shedding light on how this coefficients are used in recognition of the subjects .

Answer 1

[Image Analyst]

I don't know. You'll have to do a better job at trying to understand the papers you've read. Perhaps ask the authors. Though fft2() might be used somewhere in the algorithm/analysis, it's not really a MATLAB question. If you want a lot of papers on the topic, see this: http://www.visionbib.com/bibliography/contentsmotion-f.html#Motion%20--%20Feature-Based,%20Long%20Range,%20Motion%20and%20Structure%20Estimates,%20Tracking,%20Surveillance,%20Activities

16.7.4.5 Walking, Gait Recognition, Gait Analysis
    16.7.4.5.1 Walking, Gait Recognition, University of Southampton
    16.7.4.5.2 Cyclic Motion, Periodic Motion, for Walking and Gait Recognition
    16.7.4.5.3 Human ID Using Gait, Recognition of People Through Gait
    16.7.4.5.4 Gait Analysis, Depth, 3-D Data, 3-D from Gait
    16.7.4.5.5 Gait Analysis, Diagnosis of Difference, Joint Information, Motion Capture 

Sorry - I haven't read any of the hundreds of papers you can find in that link. We've had gait questions here before but I don't think any gait experts are following this forum.