eff1ff4b41
* Fixed a typo in OpenJPEG.J2KLayerInfo (only affected debug display) git-svn-id: http://libopenmetaverse.googlecode.com/svn/libopenmetaverse/trunk@3118 52acb1d6-8a22-11de-b505-999d5b087335
199 lines
6.7 KiB
C#
199 lines
6.7 KiB
C#
/*
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* CVS identifier:
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*
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* $Id: SubbandRectROIMask.java,v 1.3 2001/02/28 14:53:12 grosbois Exp $
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*
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* Class: ROI
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*
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* Description: This class describes the ROI mask for a subband
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*
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*
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*
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* COPYRIGHT:
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*
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* This software module was originally developed by Raphaël Grosbois and
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* Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
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* Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
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* Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research
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* Centre France S.A) in the course of development of the JPEG2000
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* standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
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* software module is an implementation of a part of the JPEG 2000
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* Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
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* Systems AB and Canon Research Centre France S.A (collectively JJ2000
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* Partners) agree not to assert against ISO/IEC and users of the JPEG
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* 2000 Standard (Users) any of their rights under the copyright, not
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* including other intellectual property rights, for this software module
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* with respect to the usage by ISO/IEC and Users of this software module
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* or modifications thereof for use in hardware or software products
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* claiming conformance to the JPEG 2000 Standard. Those intending to use
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* this software module in hardware or software products are advised that
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* their use may infringe existing patents. The original developers of
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* this software module, JJ2000 Partners and ISO/IEC assume no liability
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* for use of this software module or modifications thereof. No license
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* or right to this software module is granted for non JPEG 2000 Standard
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* conforming products. JJ2000 Partners have full right to use this
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* software module for his/her own purpose, assign or donate this
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* software module to any third party and to inhibit third parties from
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* using this software module for non JPEG 2000 Standard conforming
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* products. This copyright notice must be included in all copies or
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* derivative works of this software module.
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*
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* Copyright (c) 1999/2000 JJ2000 Partners.
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* */
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using System;
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using CSJ2K.j2k.codestream.writer;
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using CSJ2K.j2k.wavelet.analysis;
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using CSJ2K.j2k.quantization;
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using CSJ2K.j2k.wavelet;
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using CSJ2K.j2k.image;
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using CSJ2K.j2k.util;
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using CSJ2K.j2k.roi;
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namespace CSJ2K.j2k.roi.encoder
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{
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/// <summary> This class describes the ROI mask for a single subband. Each object of the
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/// class contains the mask for a particular subband and also has references to
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/// the masks of the children subbands of the subband corresponding to this
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/// mask. This class describes subband masks for images containing only
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/// rectangular ROIS
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///
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/// </summary>
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public class SubbandRectROIMask:SubbandROIMask
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{
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/// <summary>The upper left x coordinates of the applicable ROIs </summary>
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public int[] ulxs;
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/// <summary>The upper left y coordinates of the applicable ROIs </summary>
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public int[] ulys;
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/// <summary>The lower right x coordinates of the applicable ROIs </summary>
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public int[] lrxs;
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/// <summary>The lower right y coordinates of the applicable ROIs </summary>
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public int[] lrys;
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/// <summary> The constructor of the SubbandROIMask takes the dimensions of the
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/// subband as parameters. A tree of masks is generated from the subband
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/// sb. Each Subband contains the boundaries of each ROI.
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///
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/// </summary>
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/// <param name="sb">The subband corresponding to this Subband Mask
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///
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/// </param>
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/// <param name="ulxs">The upper left x coordinates of the ROIs
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///
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/// </param>
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/// <param name="ulys">The upper left y coordinates of the ROIs
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///
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/// </param>
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/// <param name="lrxs">The lower right x coordinates of the ROIs
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///
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/// </param>
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/// <param name="lrys">The lower right y coordinates of the ROIs
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///
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/// </param>
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/// <param name="lrys">The lower right y coordinates of the ROIs
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///
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/// </param>
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/// <param name="nr">Number of ROIs that affect this tile
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///
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/// </param>
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public SubbandRectROIMask(Subband sb, int[] ulxs, int[] ulys, int[] lrxs, int[] lrys, int nr):base(sb.ulx, sb.uly, sb.w, sb.h)
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{
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this.ulxs = ulxs;
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this.ulys = ulys;
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this.lrxs = lrxs;
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this.lrys = lrys;
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int r;
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if (sb.isNode)
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{
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isNode = true;
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// determine odd/even - high/low filters
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int horEvenLow = sb.ulcx % 2;
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int verEvenLow = sb.ulcy % 2;
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// Get filter support lengths
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WaveletFilter hFilter = sb.HorWFilter;
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WaveletFilter vFilter = sb.VerWFilter;
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int hlnSup = hFilter.SynLowNegSupport;
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int hhnSup = hFilter.SynHighNegSupport;
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int hlpSup = hFilter.SynLowPosSupport;
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int hhpSup = hFilter.SynHighPosSupport;
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int vlnSup = vFilter.SynLowNegSupport;
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int vhnSup = vFilter.SynHighNegSupport;
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int vlpSup = vFilter.SynLowPosSupport;
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int vhpSup = vFilter.SynHighPosSupport;
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// Generate arrays for children
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int x, y;
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int[] lulxs = new int[nr];
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int[] lulys = new int[nr];
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int[] llrxs = new int[nr];
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int[] llrys = new int[nr];
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int[] hulxs = new int[nr];
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int[] hulys = new int[nr];
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int[] hlrxs = new int[nr];
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int[] hlrys = new int[nr];
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for (r = nr - 1; r >= 0; r--)
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{
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// For all ROI calculate ...
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// Upper left x for all children
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x = ulxs[r];
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if (horEvenLow == 0)
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{
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lulxs[r] = (x + 1 - hlnSup) / 2;
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hulxs[r] = (x - hhnSup) / 2;
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}
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else
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{
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lulxs[r] = (x - hlnSup) / 2;
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hulxs[r] = (x + 1 - hhnSup) / 2;
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}
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// Upper left y for all children
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y = ulys[r];
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if (verEvenLow == 0)
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{
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lulys[r] = (y + 1 - vlnSup) / 2;
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hulys[r] = (y - vhnSup) / 2;
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}
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else
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{
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lulys[r] = (y - vlnSup) / 2;
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hulys[r] = (y + 1 - vhnSup) / 2;
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}
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// lower right x for all children
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x = lrxs[r];
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if (horEvenLow == 0)
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{
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llrxs[r] = (x + hlpSup) / 2;
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hlrxs[r] = (x - 1 + hhpSup) / 2;
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}
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else
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{
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llrxs[r] = (x - 1 + hlpSup) / 2;
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hlrxs[r] = (x + hhpSup) / 2;
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}
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// lower right y for all children
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y = lrys[r];
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if (verEvenLow == 0)
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{
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llrys[r] = (y + vlpSup) / 2;
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hlrys[r] = (y - 1 + vhpSup) / 2;
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}
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else
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{
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llrys[r] = (y - 1 + vlpSup) / 2;
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hlrys[r] = (y + vhpSup) / 2;
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}
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}
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// Create children
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hh = new SubbandRectROIMask(sb.HH, hulxs, hulys, hlrxs, hlrys, nr);
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lh = new SubbandRectROIMask(sb.LH, lulxs, hulys, llrxs, hlrys, nr);
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hl = new SubbandRectROIMask(sb.HL, hulxs, lulys, hlrxs, llrys, nr);
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ll = new SubbandRectROIMask(sb.LL, lulxs, lulys, llrxs, llrys, nr);
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}
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}
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}
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} |