invwt.java

jpeg2000算法实现

/* 
 * CVS identifier:
 * 
 * $Id:
 * 
 * Class:                   InvWT
 * 
 * Description:             The interface for implementations of a inverse
 *                          wavelet transform.
 * 
 * 
 * 
 * COPYRIGHT:
 * 
 * This software module was originally developed by Rapha雔 Grosbois and
 * Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
 * Askel鰂 (Ericsson Radio Systems AB); and Bertrand Berthelot, David
 * Bouchard, F閘ix 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.wavelet.*;

/**
 * This interface extends the WaveletTransform with the
 * specifics of inverse wavelet transforms. Classes that implement inverse
 * wavelet transfoms should implement this interface.
 *
 * <P>This class does not define the methods to transfer data, just the
 * specifics to inverse wavelet transform. Different data transfer methods are 
 * evisageable for different transforms.
 * */
public interface InvWT extends WaveletTransform {

    /**
     * Sets the image reconstruction resolution level. A value of 0
     * means reconstruction of an image with the lowest resolution
     * (dimension) available.
     *
     * <P>Note: Image resolution level indexes may differ from
     * tile-component resolution index. They are indeed indexed
     * starting from the lowest number of decomposition levels of each
     * component of each tile.
     *
     * <P>Example: For an image (1 tile) with 2 components (component
     * 0 having 2 decomposition levels and component 1 having 3
     * decomposition levels), the first (tile-) component has 3
     * resolution levels and the second one has 4 resolution levels,
     * whereas the image has only 3 resolution levels available.
     *
     * @param rl The image resolution level.
     *
     * @return The vertical coordinate of the image origin in the canvas
     * system, on the reference grid.
     *
     * */
    public void setImgResLevel(int rl);
}