Hello everyone i want to do dynamic texture video sementation using the Fourier transform in MATLAB. I am applying 3-D fft on dynamic texture video frames (using matlab function 'fftn') and reconstructing video frames back from the phase spectrum only (using matlab function 'ifftn').
- I have found moving part pixel intensity values becomes dominant (means its intensity values are increased so much) compared to stationary part intensities in reconstructed frames of original frames .(e.g.in waterfall and traffic on road, water part and moving car's intensity values are increased respectively compared to the stationary background). how does this happen?
- Also What is the relation between time shift and phase change if we take Fourier transform of video frames?
- I want know that what changes will occur in magnitude and phase spectrum amongst the frames and can we derive any relation amongst the interframe magnitude or phase spectrum changes?