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Multilevel 3-D wavelet reconstruction

`X = waverec3(WDEC)`

C = waverec3(WDEC,TYPE,N)

X = waverec3(WDEC,'a',0)

X
= waverec3(WDEC,'ca',0)

C = waverec3(WDEC,TYPE)

C
= waverec3(WDEC,TYPE,N)

`waverec3`

performs a
multilevel 3-D wavelet reconstruction starting from a multilevel 3-D
wavelet decomposition.

`X = waverec3(WDEC)`

reconstructs the 3-D
array `X`

based on the multilevel wavelet decomposition
structure `WDEC`

. You can also use `waverec3`

to extract coefficients from
a 3-D wavelet decomposition.

`WDEC`

is a structure with the fields shown
in the table.

`C = waverec3(WDEC,TYPE,N)`

reconstructs
the multilevel components at level `N`

of a 3-D wavelet
decomposition. `N`

must be a positive integer less
than or equal to the level of the decomposition.

Valid values for `TYPE`

are:

A group of three characters

`'xyz'`

, one per direction, with`'x'`

,`'y'`

and`'z'`

selected in the set {`'a'`

,`'d'`

,`'l'`

,`'h'`

} or in the corresponding uppercase set {`'A'`

,`'D'`

,`'L'`

,`'H'`

}), where`'A'`

(or`'L'`

) is a low-pass filter and`'D'`

(or`'H'`

) is a high-pass filter.The char

`'d'`

(or`'h'`

or`'D'`

or`'H'`

) gives the sum of all the components different from the low-pass.The char

`'a'`

(or`'l'`

or`'A'`

or`'L'`

) gives the low-pass component (the approximation at level`N`

).

For extraction, the valid values for TYPE are the same but prefixed
by `'c'`

or `'C'`

.

`X = waverec3(WDEC,'a',0)`

or ```
X
= waverec3(WDEC,'ca',0)
```

is equivalent to `X = waverec3(WDEC)`

. `X`

is
a reconstruction of the coefficients in `WDEC`

at
level 0.

`C = waverec3(WDEC,TYPE)`

is equivalent to ```
C
= waverec3(WDEC,TYPE,N)
```

with `N`

equal
to the level of the decomposition.

`sizeINI` | Size of the three-dimensional array |

`level` | Level of the decomposition |

`mode` | Name of the wavelet transform extension mode |

`filters` | Structure with 4 fields, |

`dec` |
For
example, if At
each level, the wavelet coefficients in The
character vectors give the order in which the separable filtering
operations are applied from left to right. For example, |

`sizes` | Successive sizes of the decomposition components |

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