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liftwave

(To be removed) Lifting schemes

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    liftwave will be removed in a future release. Use liftingScheme. For more information, see Version History.

    Syntax

    LS = liftwave(wname)
    LS = liftwave(wname,'Int2Int')

    Description

    LS = liftwave(wname) returns the lifting scheme associated with the wavelet specified by wname.

    example

    LS = liftwave(wname,'Int2Int') allows to perform an integer to integer wavelet transform.

    Examples

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    Open Live Script

    Create the lifting scheme associated with the db2 wavelet.

    lsdb2 = liftwave("db2");

    Visualize the lifting scheme.

    displs(lsdb2);
    lsdb2 = {...                                      
'd'             [ -1.73205081]              [0]   
'p'             [ -0.06698730  0.43301270]  [1]   
'd'             [  1.00000000]              [-1]  
[  1.93185165]  [  0.51763809]              []    
};

    Input Arguments

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    Wavelet, specified as a character vector or string scalar. Valid values for wname are listed here.

    WNAME Values

    'lazy'
    'haar'
    'db1', 'db2', 'db3', 'db4', 'db5', 'db6', 'db7', 'db8'
    'sym2', 'sym3', 'sym4', 'sym5', 'sym6', 'sym7', 'sym8'

    Cohen-Daubechies-Feauveau wavelets

    'cdf1.1', 'cdf1.3', 'cdf1.5'
    'cdf3.1', 'cdf3.3', 'cdf3.5'
    'cdf5.1', 'cdf5.3', 'cdf5.5'
    'cdf2.2', 'cdf2.4', 'cdf2.6'
    'cdf4.2', 'cdf4.4', 'cdf4.6'
    'cdf6.2', 'cdf6.4', 'cdf6.6'

    'biorX.Y' (see waveinfo)
    'rbioX.Y' (see waveinfo)
    'bs3': identical to 'cdf4.2'
    'rbs3': reverse of 'bs3'
    '9.7': identical to 'bior4.4'
    'r9.7': reverse of '9.7'

    Note:

    • 'cdfX.Y' == 'rbioX.Y' except for rbio4.4 and rbio5.5.

    • 'biorX.Y' is the reverse of 'rbioX.Y'

    • 'haar' == 'db1' == 'bior1.1' == 'cdf1.1'

    • 'db2' == 'sym2' and 'db3' == 'sym3'

    Data Types: char | string

    Output Arguments

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    Lifting scheme, returned as a cell array. For more information, see lsinfo.

    Version History

    Introduced before R2006a

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    See Also