db2 is called as Daubechies extremal phase wavelets. The number refers to the number of vanishing moments. This gives the reconstructed signal
Y = invintdb2(A,D)
A vector representing a 1-d discrete signal whose samples are integers.
A vector representing the approximation part of the integer transform.
A vector representing the detail part of the integer transform.
It reconstructs a 1-d integer signal using invintdb2 integer wavelet transform. The lengths of the approximation and detail parts is equal to the ceiling of the half of length of the input signal.