Removal the DC Component of Gabor Filters I recently was studying gabor filters and came to know that they have a shortcoming that they do have a minimum but some reasonable dc component.
now my question is why is it necessary to remove the dc component (using log gabor).

If there are any other limitation of gabor filters then please do tell me.
thanks..
gabor filter formed a sine/cosine wave with a gaussian, where the center of frequency of the filter is specified by the frequency of sine-cosine and the band width of the filter is specified by the width of the gaussian (valid perfectly inside a certain range and outside it, attenuates the frequency). In other words, more than one gabor filter to cover the spectrum.
the gabor filter can be designed for a band-width of 1 octave maximum. 

you can find more details about gabor and log-gabor