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Integer_Wavelet_Transform_ToolBox_2 >> Integer_Wavelet_Transform_ToolBox_2 > invnine7

invnine7

It performs inverse of (9,7) integer wavelet transform.

Calling Sequence

y = invnine7(a,d)

Arguments

a

A 1-d signal representing the approximation part.

d

A 1-d signal representing the detail part.

y

A 1-d vector representing the reconstructed signal. Its length is twice the length of approximation or detail part.

Description

It performs the reconstuction of a signal from its approximation and detail parts. It tkes two or three inputs. The first two inputs corresponds to the approximation and the detail parts.

Examples

// input 
x=[3 5 2 6 7 1 9];
// approximation and detail parts 
[a,d]=nine7(x);

// gives a=[0.  0.  7.  9. ] and d=[0.  - 3.  - 4.  0.]

// Reconstruction 
y=invnine7(a,d);

// gives y= [3.    5.    2.    6.    7.    1.    9.    0.]

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