jj2000.j2k.wavelet.synthesis.InverseWT Maven / Gradle / Ivy
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/*
* $RCSfile: InverseWT.java,v $
* $Revision: 1.1 $
* $Date: 2005/02/11 05:02:32 $
* $State: Exp $
*
* Class: InverseWT
*
* Description: This interface defines the specifics
* of inverse wavelet transforms.
*
*
*
* COPYRIGHT:
*
* This software module was originally developed by Raphaël Grosbois and
* Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
* Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
* Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research
* Centre France S.A) in the course of development of the JPEG2000
* standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
* software module is an implementation of a part of the JPEG 2000
* Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
* Systems AB and Canon Research Centre France S.A (collectively JJ2000
* Partners) agree not to assert against ISO/IEC and users of the JPEG
* 2000 Standard (Users) any of their rights under the copyright, not
* including other intellectual property rights, for this software module
* with respect to the usage by ISO/IEC and Users of this software module
* or modifications thereof for use in hardware or software products
* claiming conformance to the JPEG 2000 Standard. Those intending to use
* this software module in hardware or software products are advised that
* their use may infringe existing patents. The original developers of
* this software module, JJ2000 Partners and ISO/IEC assume no liability
* for use of this software module or modifications thereof. No license
* or right to this software module is granted for non JPEG 2000 Standard
* conforming products. JJ2000 Partners have full right to use this
* software module for his/her own purpose, assign or donate this
* software module to any third party and to inhibit third parties from
* using this software module for non JPEG 2000 Standard conforming
* products. This copyright notice must be included in all copies or
* derivative works of this software module.
*
* Copyright (c) 1999/2000 JJ2000 Partners.
*
*
*
*/
package jj2000.j2k.wavelet.synthesis;
import jj2000.j2k.decoder.DecoderSpecs;
import jj2000.j2k.image.BlkImgDataSrc;
/**
* This abstract class extends the WaveletTransform one with the specifics of
* inverse wavelet transforms.
*
* The image can be reconstructed at different resolution levels. This is
* controlled by the setResLevel() method. All the image, tile and component
* dimensions are relative the the resolution level being used. The number of
* resolution levels indicates the number of wavelet recompositions that will
* be used, if it is equal as the number of decomposition levels then the full
* resolution image is reconstructed.
*
*
It is assumed in this class that all tiles and components the same
* reconstruction resolution level. If that where not the case the
* implementing class should have additional data structures to store those
* values for each tile. However, the 'recResLvl' member variable always
* contain the values applicable to the current tile, since many methods
* implemented here rely on them.
* */
public abstract class InverseWT extends InvWTAdapter
implements BlkImgDataSrc {
/**
* Initializes this object with the given source of wavelet
* coefficients. It initializes the resolution level for full resolutioin
* reconstruction (i.e. the maximum resolution available from the 'src'
* source).
*
*
It is assumed here that all tiles and components have the same
* reconstruction resolution level. If that was not the case it should be
* the value for the current tile of the source.
*
* @param src from where the wavelet coefficinets should be obtained.
*
* @param decSpec The decoder specifications
* */
public InverseWT(MultiResImgData src,DecoderSpecs decSpec){
super(src,decSpec);
}
/**
* Creates an InverseWT object that works on the data type of the source,
* with the special additional parameters from the parameter
* list. Currently the parameter list is ignored since no special
* parameters can be specified for the inverse wavelet transform yet.
*
* @param src The source of data for the inverse wavelet
* transform.
*
* @param pl The parameter list containing parameters applicable to the
* inverse wavelet transform (other parameters can also be present).
* */
public static InverseWT createInstance(CBlkWTDataSrcDec src,
DecoderSpecs decSpec) {
// full page wavelet transform
return new InvWTFull(src,decSpec);
}
}