tags/2.3.1/src/jp/nyatla/nyartoolkit/core2/rasteranalyzer/threshold/NyARRasterThresholdAnalyzer_SlidePTile.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 version ARToolkit class library.\r
  11  * Copyright (C)2008 R.Iizuka\r
  12  *\r
  13  * This program is free software; you can redistribute it and/or\r
  14  * modify it under the terms of the GNU General Public License\r
  15  * as published by the Free Software Foundation; either version 2\r
  16  * of the License, or (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 framework; if not, write to the Free Software\r
  25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\r
  26  * \r
  27  * For further information please contact.\r
  28  *      http://nyatla.jp/nyatoolkit/\r
  29  *      <airmail(at)ebony.plala.or.jp>\r
  30  * \r
  31  */\r
  32 package jp.nyatla.nyartoolkit.core2.rasteranalyzer.threshold;\r
  33 \r
  34 import jp.nyatla.nyartoolkit.NyARException;\r
  35 import jp.nyatla.nyartoolkit.core.raster.*;\r
  36 import jp.nyatla.nyartoolkit.core.rasterreader.INyARBufferReader;\r
  37 import jp.nyatla.nyartoolkit.core.types.*;\r
  38 \r
  39 \r
  40 /**\r
  41  * 明点と暗点をPタイル法で検出して、その中央値を閾値とする。\r
  42  * \r
  43  * \r
  44  */\r
  45 public class NyARRasterThresholdAnalyzer_SlidePTile implements INyARRasterThresholdAnalyzer\r
  46 {\r
  47         interface ICreateHistgramImpl{\r
  48                 public int createHistgramImpl(INyARBufferReader i_reader,NyARIntSize i_size, int[] o_histgram);\r
  49         }\r
  50         /**\r
  51          * Glayscale(MAX256)のヒストグラム計算クラス\r
  52          */\r
  53         final class CreateHistgramImpl_INT1D_GLAY_8 implements ICreateHistgramImpl\r
  54         {\r
  55                 public int _v_interval;\r
  56                 public CreateHistgramImpl_INT1D_GLAY_8(int i_v_interval)\r
  57                 {\r
  58                         this._v_interval=i_v_interval;\r
  59                         return;\r
  60                 }\r
  61                 public int createHistgramImpl(INyARBufferReader i_reader,NyARIntSize i_size, int[] o_histgram)\r
  62                 {\r
  63                         assert (i_reader.isEqualBufferType(INyARBufferReader.BUFFERFORMAT_INT1D_GLAY_8));\r
  64 \r
  65                         int sum=0;\r
  66                         final int[] input=(int[]) i_reader.getBuffer();\r
  67                         for (int y = i_size.h-1; y >=0 ; y-=this._v_interval){\r
  68                                 sum+=i_size.w;\r
  69                                 int pt=y*i_size.w;\r
  70                                 for (int x = i_size.w-1; x >=0; x--) {\r
  71                                         o_histgram[input[pt]]++;\r
  72                                         pt++;\r
  73                                 }\r
  74                         }\r
  75                         return sum;\r
  76                 }\r
  77         }\r
  78         /**\r
  79          * RGB24bitのヒストグラム計算クラス\r
  80          *\r
  81          */\r
  82         final class CreateHistgramImpl_BYTE1D_RGB_24 implements ICreateHistgramImpl\r
  83         {\r
  84                 private int _v_interval;\r
  85                 public CreateHistgramImpl_BYTE1D_RGB_24(int i_v_interval)\r
  86                 {\r
  87                         this._v_interval=i_v_interval;\r
  88                         return;\r
  89                 }\r
  90                 public int createHistgramImpl(INyARBufferReader i_reader,NyARIntSize i_size, int[] o_histgram)\r
  91                 {\r
  92                         assert (\r
  93                                 i_reader.isEqualBufferType(INyARBufferReader.BUFFERFORMAT_BYTE1D_B8G8R8_24)||\r
  94                                 i_reader.isEqualBufferType(INyARBufferReader.BUFFERFORMAT_BYTE1D_R8G8B8_24));\r
  95                         \r
  96                         final byte[] input=(byte[]) i_reader.getBuffer();\r
  97                         final int pix_count=i_size.w;\r
  98                         final int pix_mod_part=pix_count-(pix_count%8);\r
  99                         int sum=0;\r
 100                         for (int y = i_size.h-1; y >=0 ; y-=this._v_interval) {\r
 101                                 sum+=i_size.w;\r
 102                                 int pt=y*i_size.w*3;\r
 103                                 int x,v;\r
 104                                 for (x = pix_count-1; x >=pix_mod_part; x--) {\r
 105                                         v=((input[pt+0]& 0xff)+(input[pt+1]& 0xff)+(input[pt+2]& 0xff))/3;\r
 106                                         o_histgram[v]++;\r
 107                                         pt+=3;\r
 108                                 }\r
 109                                 //タイリング\r
 110                                 for (;x>=0;x-=8){\r
 111                                         v=((input[pt+ 0]& 0xff)+(input[pt+ 1]& 0xff)+(input[pt+ 2]& 0xff))/3;\r
 112                                         o_histgram[v]++;\r
 113                                         v=((input[pt+ 3]& 0xff)+(input[pt+ 4]& 0xff)+(input[pt+ 5]& 0xff))/3;\r
 114                                         o_histgram[v]++;\r
 115                                         v=((input[pt+ 6]& 0xff)+(input[pt+ 7]& 0xff)+(input[pt+ 8]& 0xff))/3;\r
 116                                         o_histgram[v]++;\r
 117                                         v=((input[pt+ 9]& 0xff)+(input[pt+10]& 0xff)+(input[pt+11]& 0xff))/3;\r
 118                                         o_histgram[v]++;\r
 119                                         v=((input[pt+12]& 0xff)+(input[pt+13]& 0xff)+(input[pt+14]& 0xff))/3;\r
 120                                         o_histgram[v]++;\r
 121                                         v=((input[pt+15]& 0xff)+(input[pt+16]& 0xff)+(input[pt+17]& 0xff))/3;\r
 122                                         o_histgram[v]++;\r
 123                                         v=((input[pt+18]& 0xff)+(input[pt+19]& 0xff)+(input[pt+20]& 0xff))/3;\r
 124                                         o_histgram[v]++;\r
 125                                         v=((input[pt+21]& 0xff)+(input[pt+22]& 0xff)+(input[pt+23]& 0xff))/3;\r
 126                                         o_histgram[v]++;\r
 127                                         pt+=3*8;\r
 128                                 }\r
 129                         }\r
 130                         return sum;             \r
 131                 }\r
 132         }\r
 133         /**\r
 134          * RGBX32bitのヒストグラム計算クラス\r
 135          *\r
 136          */     \r
 137     final class CreateHistgramImpl_BYTE1D_B8G8R8X8_32 implements ICreateHistgramImpl\r
 138     {\r
 139         private int _v_interval;\r
 140         public CreateHistgramImpl_BYTE1D_B8G8R8X8_32(int i_v_interval)\r
 141         {\r
 142             this._v_interval = i_v_interval;\r
 143             return;\r
 144         }\r
 145         public int createHistgramImpl(INyARBufferReader i_reader, NyARIntSize i_size, int[] o_histgram)\r
 146         {\r
 147             assert(i_reader.isEqualBufferType(INyARBufferReader.BUFFERFORMAT_BYTE1D_B8G8R8X8_32));\r
 148             byte[] input = (byte[])i_reader.getBuffer();\r
 149             int pix_count = i_size.w;\r
 150             int pix_mod_part = pix_count - (pix_count % 8);\r
 151             int sum = 0;\r
 152             for (int y = i_size.h - 1; y >= 0; y -= this._v_interval)\r
 153             {\r
 154                 sum += i_size.w;\r
 155                 int pt = y * i_size.w * 3;\r
 156                 int x, v;\r
 157                 for (x = pix_count - 1; x >= pix_mod_part; x--)\r
 158                 {\r
 159                     v = ((input[pt + 0] & 0xff) + (input[pt + 1] & 0xff) + (input[pt + 2] & 0xff)) / 3;\r
 160                     o_histgram[v]++;\r
 161                     pt += 4;\r
 162                 }\r
 163                 //タイリング\r
 164                 for (; x >= 0; x -= 8)\r
 165                 {\r
 166                     v = ((input[pt + 0] & 0xff) + (input[pt + 1] & 0xff) + (input[pt + 2] & 0xff)) / 3;\r
 167                     o_histgram[v]++;\r
 168                     v = ((input[pt + 4] & 0xff) + (input[pt + 5] & 0xff) + (input[pt + 6] & 0xff)) / 3;\r
 169                     o_histgram[v]++;\r
 170                     v = ((input[pt + 8] & 0xff) + (input[pt + 9] & 0xff) + (input[pt + 10] & 0xff)) / 3;\r
 171                     o_histgram[v]++;\r
 172                     v = ((input[pt + 12] & 0xff) + (input[pt + 13] & 0xff) + (input[pt + 14] & 0xff)) / 3;\r
 173                     o_histgram[v]++;\r
 174                     v = ((input[pt + 16] & 0xff) + (input[pt + 17] & 0xff) + (input[pt + 18] & 0xff)) / 3;\r
 175                     o_histgram[v]++;\r
 176                     v = ((input[pt + 20] & 0xff) + (input[pt + 21] & 0xff) + (input[pt + 22] & 0xff)) / 3;\r
 177                     o_histgram[v]++;\r
 178                     v = ((input[pt + 24] & 0xff) + (input[pt + 25] & 0xff) + (input[pt + 26] & 0xff)) / 3;\r
 179                     o_histgram[v]++;\r
 180                     v = ((input[pt + 28] & 0xff) + (input[pt + 29] & 0xff) + (input[pt + 30] & 0xff)) / 3;\r
 181                     o_histgram[v]++;\r
 182                     pt += 4 * 8;\r
 183                 }\r
 184             }\r
 185             return sum;\r
 186         }\r
 187     }   \r
 188         private int _persentage;\r
 189         private int _threshold;\r
 190         private ICreateHistgramImpl _histgram;\r
 191         \r
 192         /**\r
 193          * @param i_persentage\r
 194          * 0<=50であること。白/黒マーカーの場合は10～20を推奨 正の場合、黒点を基準にします。 負の場合、白点を基準にします。\r
 195          * (CMOSカメラの場合、基準点は白点の方が良い)\r
 196          */\r
 197         public NyARRasterThresholdAnalyzer_SlidePTile(int i_persentage,int i_raster_format,int i_vertical_interval) throws NyARException\r
 198         {\r
 199                 assert (0 <= i_persentage && i_persentage <= 50);\r
 200                 this._persentage = i_persentage;\r
 201         switch (i_raster_format)\r
 202         {\r
 203             case INyARBufferReader.BUFFERFORMAT_BYTE1D_B8G8R8_24:\r
 204             case INyARBufferReader.BUFFERFORMAT_BYTE1D_R8G8B8_24:\r
 205                 this._histgram = new CreateHistgramImpl_BYTE1D_RGB_24(i_vertical_interval);\r
 206                 break;\r
 207             case INyARBufferReader.BUFFERFORMAT_INT1D_GLAY_8:\r
 208                 this._histgram = new CreateHistgramImpl_INT1D_GLAY_8(i_vertical_interval);\r
 209                 break;\r
 210             case INyARBufferReader.BUFFERFORMAT_BYTE1D_B8G8R8X8_32:\r
 211                 this._histgram = new CreateHistgramImpl_BYTE1D_B8G8R8X8_32(i_vertical_interval);\r
 212                 break;\r
 213             default:\r
 214                 throw new NyARException();\r
 215         }\r
 216         }\r
 217         public void setVerticalInterval(int i_step)\r
 218         {\r
 219                 return;//未実装一号\r
 220         }\r
 221 \r
 222         private int[] _histgram_buf=new int[256];\r
 223         public void analyzeRaster(INyARRaster i_input) throws NyARException\r
 224         {\r
 225                 final int[] histgram = this._histgram_buf;\r
 226                 final NyARIntSize size=i_input.getSize();\r
 227                 \r
 228                 //最大画像サイズの制限\r
 229                 assert size.w*size.h<0x40000000;\r
 230 \r
 231                 //ヒストグラム初期化\r
 232                 for (int i = 0; i < 256; i++) {\r
 233                         histgram[i] = 0;\r
 234                 }\r
 235                 int sum_of_pixel=this._histgram.createHistgramImpl(i_input.getBufferReader(), size, histgram);\r
 236 \r
 237                 // 閾値ピクセル数確定\r
 238                 final int th_pixcels = sum_of_pixel * this._persentage / 100;\r
 239                 int th_wk;\r
 240                 int th_w, th_b;\r
 241 \r
 242                 // 黒点基準\r
 243                 th_wk = th_pixcels;\r
 244                 for (th_b = 0; th_b < 254; th_b++) {\r
 245                         th_wk -= histgram[th_b];\r
 246                         if (th_wk <= 0) {\r
 247                                 break;\r
 248                         }\r
 249                 }\r
 250                 // 白点基準\r
 251                 th_wk = th_pixcels;\r
 252                 for (th_w = 255; th_w > 1; th_w--) {\r
 253                         th_wk -= histgram[th_w];\r
 254                         if (th_wk <= 0) {\r
 255                                 break;\r
 256                         }\r
 257                 }\r
 258                 // 閾値の保存\r
 259                 this._threshold = (th_w + th_b) / 2;\r
 260                 return;\r
 261         }\r
 262         public int getThreshold()\r
 263         {\r
 264                 return this._threshold;\r
 265         }\r
 266 \r
 267         public int getThreshold(int i_x, int i_y)\r
 268         {\r
 269                 return this._threshold;\r
 270         }\r
 271 }\r