IDGT2 - 2D Inverse discrete Gabor transform

Usage

f=idgt2(c,g,a);
f=idgt2(c,g1,g2,a);
f=idgt2(c,g1,g2,[a1 a2]);
f=idgt2(c,g,a,Ls);
f=idgt2(c,g1,g2,a,Ls);
f=idgt2(c,g1,g2,[a1 a2],Ls);

Input parameters

`c`	Array of coefficients.
`g, g1, g2`
	Window function(s).
`a, a1, a2`
	Length(s) of time shift.
`Ls`	Length(s) of reconstructed signal (optional).

Output parameters

`f`	Output data, matrix.

Description

idgt2(c,g,a,M) will calculate a separable two dimensional inverse discrete Gabor transformation of the input coefficients c using the window g and parameters a, along each dimension. The number of channels is deduced from the size of the coefficients c.

idgt2(c,g1,g2,a) will do the same using the window g1 along the first dimension, and window g2 along the second dimension.

idgt2(c,g,a,Ls) or idgt2(c,g1,g2,a,Ls) will cut the signal to size Ls after the transformation is done.

The parameters a and Ls can also be vectors of length 2. In this case the first element will be used for the first dimension and the second element will be used for the second dimension.