jwave.transforms.wavelets.other.CDF97 Maven / Gradle / Ivy
/**
* JWave is distributed under the MIT License (MIT); this file is part of.
*
* Copyright (c) 2008-2015 Christian Scheiblich ([email protected])
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package jwave.transforms.wavelets.other;
import jwave.transforms.wavelets.Wavelet;
/**
* Cohen Daubechies Feauveau (CDF) 9/7 Wavelet
*
* @author Christian Scheiblich ([email protected])
* @date 17.08.2014 13:52:41
*/
public class CDF97 extends Wavelet {
/**
* Cohen Daubechies Feauveau (CDF) 9/7 Wavelet. THIS WAVELET IS NOT WORKING -
* DUE TO ODD NUMBER COEFFICIENTS!!!
*
* @author Christian Scheiblich ([email protected])
* @date 17.08.2014 13:52:41
*/
public CDF97( ) {
_name = "CDF 9/7"; // name of the wavelet
_transformWavelength = 2; // minimal wavelength of input signal
_motherWavelength = 9; // wavelength of mother wavelet
// double sqrt2 = Math.sqrt( 2. );
_scalingDeCom = new double[ _motherWavelength ];
_scalingDeCom[ 0 ] = 0.026748757411; //
_scalingDeCom[ 1 ] = -0.016864118443; //
_scalingDeCom[ 2 ] = -0.078223266529; //
_scalingDeCom[ 3 ] = 0.266864118443; //
_scalingDeCom[ 4 ] = 0.602949018236; //
_scalingDeCom[ 5 ] = 0.266864118443; //
_scalingDeCom[ 6 ] = -0.078223266529; //
_scalingDeCom[ 7 ] = -0.016864118443; //
_scalingDeCom[ 8 ] = 0.026748757411; //
_waveletDeCom = new double[ _motherWavelength ];
_waveletDeCom[ 0 ] = 0.; //
_waveletDeCom[ 1 ] = 0.091271763114; //
_waveletDeCom[ 2 ] = -0.057543526229; //
_waveletDeCom[ 3 ] = -0.591271763114; //
_waveletDeCom[ 4 ] = 1.11508705; //
_waveletDeCom[ 5 ] = -0.591271763114; //
_waveletDeCom[ 6 ] = -0.057543526229; //
_waveletDeCom[ 7 ] = 0.091271763114; //
_waveletDeCom[ 8 ] = 0.; //
// Copy to reconstruction filters due to orthogonality!
_scalingReCon = new double[ _motherWavelength ];
_waveletReCon = new double[ _motherWavelength ];
for( int i = 0; i < _motherWavelength; i++ ) {
_scalingReCon[ i ] = _scalingDeCom[ i ];
_waveletReCon[ i ] = _waveletDeCom[ i ];
} // i
} // CDF97
} // CDF97