10.6084/m9.figshare.2067504.v1
Gabriel Cristobal
Gabriel
Cristobal
Sylvain Fischer
Sylvain
Fischer
Rafael Redondo
Rafael
Redondo
LogGabor Matlab toolbox
figshare
2016
image processing programs
multiresolution
Gabor wavelet transformation
Image Processing
Computer Vision
Signal Processing
2016-01-26 09:01:06
Software
https://figshare.com/articles/software/LogGabor_Matlab_toolbox/2067504
Orthogonal and biorthogonal wavelets became very popular image processing tools but exhibit major drawbacks, namely a poor resolution in orientation and the lack of translation invariance due to aliasing between subbands. We propose here the construction of log-Gabor wavelet transforms which allow exact reconstruction and strengthen the excellent mathematical properties of the Gabor filters. Two major improvements on the previous Gabor wavelet schemes are proposed: first the highest frequency bands are covered by narrowly localized oriented filters. Secondly, the set of filters cover uniformly the Fourier domain including the highest and lowest frequencies and thus exact reconstruction is achieved using the same filters in both the direct and the inverse transforms (which means that the transform is self-invertible). This package provides the procedure for constructing log-Gabor filters by implementing such multiresolution scheme.