Although the filtering method in frequency domain can solve the time variant filtering problem based on Fourier transform, the method may appear a false anomaly in conjunct part between Windows.
This new method reduces the influence of time response of Fourier filtering on frequency measurement and improves the accuracy of transient frequency measurement.
Low level image processing is the base of localization. The paper discusses time domain filtering and frequency domain filtering according to the noise disturbance in the surrounding images.