001/*
002 * $RCSfile: InvWT.java,v $
003 * $Revision: 1.1 $
004 * $Date: 2005/02/11 05:02:31 $
005 * $State: Exp $
006 *
007 * Class:                   InvWT
008 *
009 * Description:             The interface for implementations of a inverse
010 *                          wavelet transform.
011 *
012 *
013 *
014 * COPYRIGHT:
015 *
016 * This software module was originally developed by Raphaël Grosbois and
017 * Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
018 * Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
019 * Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research
020 * Centre France S.A) in the course of development of the JPEG2000
021 * standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
022 * software module is an implementation of a part of the JPEG 2000
023 * Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
024 * Systems AB and Canon Research Centre France S.A (collectively JJ2000
025 * Partners) agree not to assert against ISO/IEC and users of the JPEG
026 * 2000 Standard (Users) any of their rights under the copyright, not
027 * including other intellectual property rights, for this software module
028 * with respect to the usage by ISO/IEC and Users of this software module
029 * or modifications thereof for use in hardware or software products
030 * claiming conformance to the JPEG 2000 Standard. Those intending to use
031 * this software module in hardware or software products are advised that
032 * their use may infringe existing patents. The original developers of
033 * this software module, JJ2000 Partners and ISO/IEC assume no liability
034 * for use of this software module or modifications thereof. No license
035 * or right to this software module is granted for non JPEG 2000 Standard
036 * conforming products. JJ2000 Partners have full right to use this
037 * software module for his/her own purpose, assign or donate this
038 * software module to any third party and to inhibit third parties from
039 * using this software module for non JPEG 2000 Standard conforming
040 * products. This copyright notice must be included in all copies or
041 * derivative works of this software module.
042 *
043 * Copyright (c) 1999/2000 JJ2000 Partners.
044 *
045 *
046 *
047 */
048
049 package jj2000.j2k.wavelet.synthesis;
050
051 import jj2000.j2k.wavelet.*;
052
053/**
054 * This interface extends the WaveletTransform with the
055 * specifics of inverse wavelet transforms. Classes that implement inverse
056 * wavelet transfoms should implement this interface.
057 *
058 * <P>This class does not define the methods to transfer data, just the
059 * specifics to inverse wavelet transform. Different data transfer methods are
060 * evisageable for different transforms.
061 * */
062public interface InvWT extends WaveletTransform {
063
064    /**
065     * Sets the image reconstruction resolution level. A value of 0
066     * means reconstruction of an image with the lowest resolution
067     * (dimension) available.
068     *
069     * <P>Note: Image resolution level indexes may differ from
070     * tile-component resolution index. They are indeed indexed
071     * starting from the lowest number of decomposition levels of each
072     * component of each tile.
073     *
074     * <P>Example: For an image (1 tile) with 2 components (component
075     * 0 having 2 decomposition levels and component 1 having 3
076     * decomposition levels), the first (tile-) component has 3
077     * resolution levels and the second one has 4 resolution levels,
078     * whereas the image has only 3 resolution levels available.
079     *
080     * @param rl The image resolution level.
081     *
082     * @return The vertical coordinate of the image origin in the canvas
083     * system, on the reference grid.
084     *
085     * */
086    public void setImgResLevel(int rl);
087}