src/jp/nyatla/nyartoolkit/core/match/NyARMatchPattDeviationBlackWhiteData.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\r
  14  * modify it under the terms of the GNU Lesser General Public License\r
  15  * as published by the Free Software Foundation; either version 3\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 Lesser General Public License for more details\r
  22  * \r
  23  * You should have received a copy of the GNU Lesser General Public\r
  24  * License 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.match;\r
  32 \r
  33 \r
  34 import jp.nyatla.nyartoolkit.core.raster.*;\r
  35 \r
  36 \r
  37 /**\r
  38  * INyARMatchPattのColor差分ラスタを格納するクラスです。\r
  39  *\r
  40  */\r
  41 public class NyARMatchPattDeviationBlackWhiteData\r
  42 {\r
  43         private int _data[];\r
  44         private double _pow;\r
  45         //\r
  46         private int _number_of_pixels;\r
  47         public int[] refData()\r
  48         {\r
  49                 return this._data;\r
  50         }\r
  51         public double getPow()\r
  52         {\r
  53                 return this._pow;\r
  54         }\r
  55                           \r
  56         public NyARMatchPattDeviationBlackWhiteData(int i_width,int i_height)\r
  57         {\r
  58                 this._number_of_pixels=i_height*i_width;\r
  59                 this._data=new int[this._number_of_pixels];\r
  60                 return;\r
  61         }\r
  62         /**\r
  63          * XRGB[width*height]の配列から、パターンデータを構築。\r
  64          * @param i_buffer\r
  65          */\r
  66         public void setRaster(INyARRaster i_raster)\r
  67         {\r
  68                 //i_buffer[XRGB]→差分[BW]変換                     \r
  69                 int i;\r
  70                 int ave;//<PV/>\r
  71                 int rgb;//<PV/>\r
  72                 final int[] linput=this._data;//<PV/>\r
  73                 final int[] buf=(int[])i_raster.getBufferReader().getBuffer();\r
  74 \r
  75                 // input配列のサイズとwhも更新// input=new int[height][width][3];\r
  76                 final int number_of_pixels=this._number_of_pixels;\r
  77 \r
  78                 //<平均値計算(FORの1/8展開)/>\r
  79                 ave = 0;\r
  80                 for(i=number_of_pixels-1;i>=0;i--){\r
  81                         rgb = buf[i];\r
  82                         ave += ((rgb >> 16) & 0xff) + ((rgb >> 8) & 0xff) + (rgb & 0xff);\r
  83                 }\r
  84                 ave=(number_of_pixels*255*3-ave)/(3*number_of_pixels);\r
  85                 //\r
  86                 int sum = 0,w_sum;\r
  87                 \r
  88                 //<差分値計算/>\r
  89                 for (i = number_of_pixels-1; i >= 0;i--) {\r
  90                         rgb = buf[i];\r
  91                         w_sum =((255*3-(rgb & 0xff)-((rgb >> 8) & 0xff)-((rgb >> 16) & 0xff))/3)-ave;\r
  92                         linput[i] = w_sum;\r
  93                         sum += w_sum * w_sum;\r
  94                 }\r
  95                 final double p=Math.sqrt((double) sum);\r
  96                 this._pow=p!=0.0?p:0.0000001;\r
  97                 return;\r
  98         }\r
  99 }\r