/* * CVS identifier: * * $Id: SubbandRectROIMask.java,v 1.3 2001/02/28 14:53:12 grosbois Exp $ * * Class:                   ROI * * Description:             This class describes the ROI mask for a subband * * * * 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.roi.encoder;import jj2000.j2k.codestream.writer.*;import jj2000.j2k.wavelet.analysis.*;import jj2000.j2k.quantization.*;import jj2000.j2k.wavelet.*;import jj2000.j2k.image.*;import jj2000.j2k.util.*;import jj2000.j2k.roi.*;/**  * This class describes the ROI mask for a single subband. Each object of the * class contains the mask for a particular subband and also has references to * the masks of the children subbands of the subband corresponding to this * mask. This class describes subband masks for images containing only * rectangular ROIS * */public class SubbandRectROIMask extends SubbandROIMask{    /** The upper left x coordinates of the applicable ROIs */    public int[] ulxs;    /** The upper left y coordinates of the applicable ROIs */    public int[] ulys;    /** The lower right x coordinates of the applicable ROIs */    public int[] lrxs;    /** The lower right y coordinates of the applicable ROIs */    public int[] lrys;    /**     * The constructor of the SubbandROIMask takes the dimensions of the     * subband as parameters. A tree of masks is generated from the subband     * sb. Each Subband contains the boundaries of each ROI.     *     * @param sb The subband corresponding to this Subband Mask     *     * @param ulxs The upper left x coordinates of the ROIs     *     * @param ulys The upper left y coordinates of the ROIs     *     * @param lrxs The lower right x coordinates of the ROIs     *     * @param lrys The lower right y coordinates of the ROIs     *     * @param lrys The lower right y coordinates of the ROIs     *     * @param nr Number of ROIs that affect this tile     * */    public SubbandRectROIMask(Subband sb, int[] ulxs, int[] ulys, int[] lrxs,                          int[] lrys, int nr){        super(sb.ulx,sb.uly,sb.w,sb.h);        this.ulxs = ulxs;        this.ulys = ulys;        this.lrxs = lrxs;        this.lrys = lrys;        int r;          if(sb.isNode){            isNode=true;            // determine odd/even - high/low filters            int horEvenLow = sb.ulcx%2;            int verEvenLow = sb.ulcy%2;            // Get filter support lengths            WaveletFilter hFilter = sb.getHorWFilter();            WaveletFilter vFilter = sb.getVerWFilter();            int hlnSup = hFilter.getSynLowNegSupport();            int hhnSup = hFilter.getSynHighNegSupport();             int hlpSup = hFilter.getSynLowPosSupport();             int hhpSup = hFilter.getSynHighPosSupport();            int vlnSup = vFilter.getSynLowNegSupport();             int vhnSup = vFilter.getSynHighNegSupport();             int vlpSup = vFilter.getSynLowPosSupport();             int vhpSup = vFilter.getSynHighPosSupport();                            // Generate arrays for children            int x,y;            int[] lulxs = new int[nr];            int[] lulys = new int[nr];            int[] llrxs = new int[nr];            int[] llrys = new int[nr];            int[] hulxs = new int[nr];            int[] hulys = new int[nr];            int[] hlrxs = new int[nr];            int[] hlrys = new int[nr];            for(r=nr-1;r>=0;r--){ // For all ROI calculate ...                // Upper left x for all children                x = ulxs[r];                if(horEvenLow==0){                     lulxs[r] = (x+1-hlnSup)/2;                    hulxs[r] = (x-hhnSup)/2;                }                else{                     lulxs[r] = (x-hlnSup)/2;                    hulxs[r] = (x+1-hhnSup)/2;                }                // Upper left y for all children                y = ulys[r];                if(verEvenLow==0){                     lulys[r] = (y+1-vlnSup)/2;                    hulys[r] = (y-vhnSup)/2;                }                else{                    lulys[r] = (y-vlnSup)/2;                    hulys[r] = (y+1-vhnSup)/2;                }                // lower right x for all children                x = lrxs[r];                if(horEvenLow==0){                     llrxs[r] = (x+hlpSup)/2;                    hlrxs[r] = (x-1+hhpSup)/2;                }                else{                     llrxs[r] = (x-1+hlpSup)/2;                    hlrxs[r] = (x+hhpSup)/2;                }                // lower right y for all children                y=lrys[r];                if(verEvenLow==0){                    llrys[r] = (y+vlpSup)/2;                    hlrys[r] = (y-1+vhpSup)/2;                }                else{                    llrys[r] = (y-1+vlpSup)/2;                    hlrys[r] = (y+vhpSup)/2;                }               }             // Create children            hh = new SubbandRectROIMask(sb.getHH(),hulxs,hulys,hlrxs,hlrys,nr);            lh = new SubbandRectROIMask(sb.getLH(),lulxs,hulys,llrxs,hlrys,nr);            hl = new SubbandRectROIMask(sb.getHL(),hulxs,lulys,hlrxs,llrys,nr);            ll = new SubbandRectROIMask(sb.getLL(),lulxs,lulys,llrxs,llrys,nr);        }                }}