jj2000.j2k.wavelet.WaveletTransform Maven / Gradle / Ivy
Show all versions of jai-imageio-jpeg2000 Show documentation
/*
* $RCSfile: WaveletTransform.java,v $
* $Revision: 1.1 $
* $Date: 2005/02/11 05:02:28 $
* $State: Exp $
*
* Class: WaveletTransform
*
* Description: Interface that defines how a forward or
* inverse wavelet transform should present
* itself.
*
*
*
* 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;
import jj2000.j2k.image.ImgData;
/**
* This interface defines how a forward or inverse wavelet transform
* should present itself. As specified in the ImgData interface,
* from which this class inherits, all operations are confined to the
* current tile, and all coordinates are relative to it.
*
* The definition of the methods in this interface allows for
* different types of implementation, reversibility and levels of
* decompositions for each component and each tile. An implementation
* of this interface does not need to support all this flexibility
* (e.g., it may provide the same implementation type and
* decomposition levels for all tiles and components).
* */
public interface WaveletTransform extends ImgData {
/**
* ID for line based implementations of wavelet transforms.
*/
public final static int WT_IMPL_LINE = 0;
/**
* ID for full-page based implementations of wavelet transforms. Full-page
* based implementations should be avoided since they require
* large amounts of memory. */
public final static int WT_IMPL_FULL = 2;
/**
* Returns the reversibility of the wavelet transform for the
* specified component and tile. A wavelet transform is reversible
* when it is suitable for lossless and lossy-to-lossless
* compression.
*
* @param t The index of the tile.
*
* @param c The index of the component.
*
* @return true is the wavelet transform is reversible, false if not.
*
*
* */
public boolean isReversible(int t,int c);
/**
* Returns the implementation type of this wavelet transform
* (WT_IMPL_LINE or WT_IMPL_FRAME) for the specified component,
* in the current tile.
*
* @param n The index of the component.
*
* @return WT_IMPL_LINE or WT_IMPL_FULL for line,
* block or full-page based transforms.
*
*
* */
public int getImplementationType(int n);
}