trunk/src/jp/nyatla/nyartoolkit/core/squaredetect/NyARSquareContourDetector_ARToolKit.java

   1 /* \r
   2  * PROJECT: NyARToolkit\r
   3  * --------------------------------------------------------------------------------\r
   4  * This work is based on the original ARToolKit developed by\r
   5  *   Hirokazu Kato\r
   6  *   Mark Billinghurst\r
   7  *   HITLab, University of Washington, Seattle\r
   8  * http://www.hitl.washington.edu/artoolkit/\r
   9  *\r
  10  * The NyARToolkit is Java edition ARToolKit class library.\r
  11  * Copyright (C)2008-2009 Ryo Iizuka\r
  12  *\r
  13  * This program is free software: you can redistribute it and/or modify\r
  14  * it under the terms of the GNU General Public License as published by\r
  15  * the Free Software Foundation, either version 3 of the License, or\r
  16  * (at your option) any later version.\r
  17  * \r
  18  * This program is distributed in the hope that it will be useful,\r
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  21  * GNU General Public License for more details.\r
  22  *\r
  23  * You should have received a copy of the GNU General Public License\r
  24  * along with this program.  If not, see <http://www.gnu.org/licenses/>.\r
  25  * \r
  26  * For further information please contact.\r
  27  *      http://nyatla.jp/nyatoolkit/\r
  28  *      <airmail(at)ebony.plala.or.jp> or <nyatla(at)nyatla.jp>\r
  29  * \r
  30  */\r
  31 package jp.nyatla.nyartoolkit.core.squaredetect;\r
  32 \r
  33 import jp.nyatla.nyartoolkit.NyARException;\r
  34 import jp.nyatla.nyartoolkit.core.labeling.NyARLabelOverlapChecker;\r
  35 import jp.nyatla.nyartoolkit.core.labeling.artoolkit.NyARLabelingImage;\r
  36 import jp.nyatla.nyartoolkit.core.labeling.artoolkit.NyARLabelingLabel;\r
  37 import jp.nyatla.nyartoolkit.core.labeling.artoolkit.NyARLabelingLabelStack;\r
  38 import jp.nyatla.nyartoolkit.core.labeling.artoolkit.NyARLabeling_ARToolKit;\r
  39 import jp.nyatla.nyartoolkit.core.raster.NyARBinRaster;\r
  40 import jp.nyatla.nyartoolkit.core.types.NyARIntSize;\r
  41 \r
  42 \r
  43 \r
  44 public class NyARSquareContourDetector_ARToolKit extends NyARSquareContourDetector\r
  45 {\r
  46         private static final int AR_AREA_MAX = 100000;// #define AR_AREA_MAX 100000\r
  47         private static final int AR_AREA_MIN = 70;// #define AR_AREA_MIN 70\r
  48         private final int _width;\r
  49         private final int _height;\r
  50 \r
  51         private final NyARLabeling_ARToolKit _labeling;\r
  52 \r
  53         private final NyARLabelingImage _limage;\r
  54 \r
  55         private final NyARLabelOverlapChecker<NyARLabelingLabel> _overlap_checker = new NyARLabelOverlapChecker<NyARLabelingLabel>(32,NyARLabelingLabel.class);\r
  56         private final NyARContourPickup _cpickup=new NyARContourPickup();\r
  57         private final NyARCoord2SquareVertexIndexes _coord2vertex=new NyARCoord2SquareVertexIndexes();\r
  58         \r
  59         private final int _max_coord;\r
  60         private final int[] _xcoord;\r
  61         private final int[] _ycoord;    \r
  62         private final int[] __detectMarker_mkvertex = new int[4];\r
  63         /**\r
  64          * 最大i_squre_max個のマーカーを検出するクラスを作成する。\r
  65          * \r
  66          * @param i_param\r
  67          */\r
  68         public NyARSquareContourDetector_ARToolKit(NyARIntSize i_size) throws NyARException\r
  69         {\r
  70                 this._width = i_size.w;\r
  71                 this._height = i_size.h;\r
  72                 this._labeling = new NyARLabeling_ARToolKit();\r
  73                 this._limage = new NyARLabelingImage(this._width, this._height);\r
  74 \r
  75                 // 輪郭の最大長は画面に映りうる最大の長方形サイズ。\r
  76                 int number_of_coord = (this._width + this._height) * 2;\r
  77 \r
  78                 // 輪郭バッファは頂点変換をするので、輪郭バッファの２倍取る。\r
  79                 this._max_coord = number_of_coord;\r
  80                 this._xcoord = new int[number_of_coord];\r
  81                 this._ycoord = new int[number_of_coord];\r
  82                 return;\r
  83         }\r
  84 \r
  85         /**\r
  86          * arDetectMarker2を基にした関数\r
  87          * この関数はNyARSquare要素のうち、directionを除くパラメータを取得して返します。\r
  88          * directionの確定は行いません。\r
  89          * @param i_raster\r
  90          * 解析する２値ラスタイメージを指定します。\r
  91          * @param o_square_stack\r
  92          * 抽出した正方形候補を格納するリスト\r
  93          * @throws NyARException\r
  94          */\r
  95         public final void detectMarkerCB(NyARBinRaster i_raster, IDetectMarkerCallback i_callback) throws NyARException\r
  96         {\r
  97                 final NyARLabelingImage limage = this._limage;\r
  98 \r
  99                 // ラベル数が0ならここまで\r
 100                 final int label_num = this._labeling.labeling(i_raster,this._limage);\r
 101                 if (label_num < 1) {\r
 102                         return;\r
 103                 }\r
 104 \r
 105                 final NyARLabelingLabelStack stack = limage.getLabelStack();\r
 106                 //ラベルをソートしておく\r
 107                 stack.sortByArea();\r
 108                 //\r
 109                 final NyARLabelingLabel[] labels = stack.getArray();\r
 110 \r
 111                 // デカいラベルを読み飛ばし\r
 112                 int i;\r
 113                 for (i = 0; i < label_num; i++) {\r
 114                         // 検査対象内のラベルサイズになるまで無視\r
 115                         if (labels[i].area <= AR_AREA_MAX) {\r
 116                                 break;\r
 117                         }\r
 118                 }\r
 119                 final int xsize = this._width;\r
 120                 final int ysize = this._height;\r
 121                 final int[] xcoord = this._xcoord;\r
 122                 final int[] ycoord = this._ycoord;\r
 123                 final int coord_max = this._max_coord;\r
 124                 final int[] mkvertex =this.__detectMarker_mkvertex;\r
 125                 \r
 126                 final NyARLabelOverlapChecker<NyARLabelingLabel> overlap = this._overlap_checker;\r
 127 \r
 128                 //重なりチェッカの最大数を設定\r
 129                 overlap.setMaxLabels(label_num);\r
 130                 for (; i < label_num; i++) {\r
 131                         final NyARLabelingLabel label_pt = labels[i];\r
 132                         final int label_area = label_pt.area;\r
 133                         // 検査対象サイズよりも小さくなったら終了\r
 134                         if (label_area < AR_AREA_MIN) {\r
 135                                 break;\r
 136                         }\r
 137                         // クリップ領域が画面の枠に接していれば除外\r
 138                         if (label_pt.clip_l == 1 || label_pt.clip_r == xsize - 2) {// if(wclip[i*4+0] == 1 || wclip[i*4+1] ==xsize-2){\r
 139                                 continue;\r
 140                         }\r
 141                         if (label_pt.clip_t == 1 || label_pt.clip_b == ysize - 2) {// if( wclip[i*4+2] == 1 || wclip[i*4+3] ==ysize-2){\r
 142                                 continue;\r
 143                         }\r
 144                         // 既に検出された矩形との重なりを確認\r
 145                         if (!overlap.check(label_pt)) {\r
 146                                 // 重なっているようだ。\r
 147                                 continue;\r
 148                         }\r
 149                         // 輪郭を取得\r
 150                         final int coord_num = _cpickup.getContour(limage,limage.getTopClipTangentX(label_pt),label_pt.clip_t, coord_max, xcoord, ycoord);\r
 151                         if (coord_num == coord_max) {\r
 152                                 // 輪郭が大きすぎる。\r
 153                                 continue;\r
 154                         }\r
 155                         //輪郭線をチェックして、矩形かどうかを判定。矩形ならばmkvertexに取得\r
 156                         if (!this._coord2vertex.getVertexIndexes(xcoord, ycoord,coord_num,label_area, mkvertex)) {\r
 157                                 // 頂点の取得が出来なかった\r
 158                                 continue;\r
 159                         }\r
 160                         //矩形を発見したことをコールバック関数で通知\r
 161                         i_callback.onSquareDetect(this,xcoord,ycoord,coord_num,mkvertex);\r
 162 \r
 163                         // 検出済の矩形の属したラベルを重なりチェックに追加する。\r
 164                         overlap.push(label_pt);\r
 165                         \r
 166                 }\r
 167                 return;\r
 168         }\r
 169 \r
 170 }\r
 171 \r
 172 \r
 173 \r