trunk/src/jp/nyatla/nyartoolkit/core/pickup/NyARColorPatt_PseudoAffine.java

   1 /* \r
   2  * PROJECT: NyARToolkit(Extension)\r
   3  * --------------------------------------------------------------------------------\r
   4  * The NyARToolkit is Java edition ARToolKit class library.\r
   5  * Copyright (C)2008-2009 Ryo Iizuka\r
   6  *\r
   7  * This program is free software: you can redistribute it and/or modify\r
   8  * it under the terms of the GNU General Public License as published by\r
   9  * the Free Software Foundation, either version 3 of the License, or\r
  10  * (at your option) any later version.\r
  11  * \r
  12  * This program is distributed in the hope that it will be useful,\r
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  15  * GNU General Public License for more details.\r
  16  *\r
  17  * You should have received a copy of the GNU General Public License\r
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.\r
  19  * \r
  20  * For further information please contact.\r
  21  *      http://nyatla.jp/nyatoolkit/\r
  22  *      <airmail(at)ebony.plala.or.jp> or <nyatla(at)nyatla.jp>\r
  23  * \r
  24  */\r
  25 package jp.nyatla.nyartoolkit.core.pickup;\r
  26 \r
  27 \r
  28 import jp.nyatla.nyartoolkit.NyARException;\r
  29 import jp.nyatla.nyartoolkit.core.raster.rgb.*;\r
  30 import jp.nyatla.nyartoolkit.core.rasterreader.*;\r
  31 import jp.nyatla.nyartoolkit.core.types.*;\r
  32 import jp.nyatla.nyartoolkit.core.types.matrix.*;\r
  33 \r
  34 \r
  35 \r
  36 /**\r
  37  * 疑似アフィン変換を使用して、ラスタ上の四角形から任意解像度\r
  38  * の矩形パターンを作成します。\r
  39  *\r
  40  */\r
  41 public class NyARColorPatt_PseudoAffine implements INyARColorPatt\r
  42 {\r
  43         private int[] _patdata;\r
  44         private NyARBufferReader _buf_reader;\r
  45         private NyARRgbPixelReader_INT1D_X8R8G8B8_32 _pixelreader;\r
  46         private NyARIntSize _size;\r
  47                 \r
  48         public final int getWidth()\r
  49         {\r
  50                 return this._size.w;\r
  51         }\r
  52         \r
  53         public final int getHeight()\r
  54         {\r
  55                 return this._size.h;\r
  56         }\r
  57         \r
  58         public final NyARIntSize getSize()\r
  59         {\r
  60                 return  this._size;\r
  61         }\r
  62         \r
  63         public final INyARBufferReader getBufferReader()\r
  64         {\r
  65                 return this._buf_reader;\r
  66         }\r
  67         \r
  68         public final INyARRgbPixelReader getRgbPixelReader()\r
  69         {\r
  70                 return this._pixelreader;\r
  71         }\r
  72         NyARDoubleMatrix44 _invmat=new NyARDoubleMatrix44();\r
  73         /**\r
  74          * @param i_width\r
  75          * @param i_height\r
  76          */\r
  77         public NyARColorPatt_PseudoAffine(int i_width, int i_height)\r
  78         {               \r
  79                 this._size=new NyARIntSize(i_width,i_height);\r
  80                 this._patdata = new int[i_height*i_width];\r
  81                 this._buf_reader=new NyARBufferReader(this._patdata,NyARBufferReader.BUFFERFORMAT_INT1D_X8R8G8B8_32);\r
  82                 this._pixelreader=new NyARRgbPixelReader_INT1D_X8R8G8B8_32(this._patdata,this._size);\r
  83                 //疑似アフィン変換のパラメタマトリクスを計算します。\r
  84                 //長方形から計算すると、有効要素がm00,m01,m02,m03,m10,m11,m20,m23,m30になります。\r
  85                 final NyARDoubleMatrix44 mat=this._invmat;\r
  86                 mat.m00=0;\r
  87                 mat.m01=0;\r
  88                 mat.m02=0;\r
  89                 mat.m03=1.0;\r
  90                 mat.m10=0;\r
  91                 mat.m11=i_width-1;\r
  92                 mat.m12=0;\r
  93                 mat.m13=1.0;\r
  94                 mat.m20=(i_width-1)*(i_height-1);\r
  95                 mat.m21=i_width-1;\r
  96                 mat.m22=i_height-1;\r
  97                 mat.m23=1.0;\r
  98                 mat.m30=0;\r
  99                 mat.m31=0;\r
 100                 mat.m32=i_height-1;\r
 101                 mat.m33=1.0;\r
 102                 mat.inverse(mat);\r
 103                 return;\r
 104         }       \r
 105 \r
 106         /**\r
 107          * 変換行列と頂点座標から、パラメータを計算\r
 108          * o_paramの[0..3]にはXのパラメタ、[4..7]にはYのパラメタを格納する。\r
 109          * @param i_vertex\r
 110          * @param pa\r
 111          * @param pb\r
 112          */\r
 113         private void calcPara(NyARIntPoint2d[] i_vertex,double[] o_cparam)\r
 114         {\r
 115                 final NyARDoubleMatrix44 invmat=this._invmat;\r
 116                 double v1,v2,v4;\r
 117                 //変換行列とベクトルの積から、変換パラメタを計算する。\r
 118                 v1=i_vertex[0].x;\r
 119                 v2=i_vertex[1].x;\r
 120                 v4=i_vertex[3].x;\r
 121                 \r
 122                 o_cparam[0]=invmat.m00*v1+invmat.m01*v2+invmat.m02*i_vertex[2].x+invmat.m03*v4;\r
 123                 o_cparam[1]=invmat.m10*v1+invmat.m11*v2;//m12,m13は0;\r
 124                 o_cparam[2]=invmat.m20*v1+invmat.m23*v4;//m21,m22は0;\r
 125                 o_cparam[3]=v1;//m30は1.0で、m31,m32,m33は0\r
 126                 \r
 127                 v1=i_vertex[0].y;\r
 128                 v2=i_vertex[1].y;\r
 129                 v4=i_vertex[3].y;\r
 130 \r
 131                 o_cparam[4]=invmat.m00*v1+invmat.m01*v2+invmat.m02*i_vertex[2].y+invmat.m03*v4;\r
 132                 o_cparam[5]=invmat.m10*v1+invmat.m11*v2;//m12,m13は0;\r
 133                 o_cparam[6]=invmat.m20*v1+invmat.m23*v4;//m21,m22は0;\r
 134                 o_cparam[7]=v1;//m30は1.0で、m31,m32,m33は0\r
 135                 return;\r
 136         }\r
 137 \r
 138         /**\r
 139          * 疑似アフィン変換の変換パラメタ\r
 140          */\r
 141         private double[] _convparam=new double[8];\r
 142         \r
 143         /**\r
 144          * @see INyARColorPatt#pickFromRaster\r
 145          */\r
 146         public boolean pickFromRaster(INyARRgbRaster image,NyARIntPoint2d[] i_vertexs)throws NyARException\r
 147         {\r
 148                 final double[] conv_param=this._convparam;\r
 149             int rx2,ry2;\r
 150                 rx2=this._size.w;\r
 151                 ry2=this._size.h;\r
 152                 int[] rgb_tmp=new int[3];\r
 153 \r
 154                 INyARRgbPixelReader reader=image.getRgbPixelReader();\r
 155                 // 変形先領域の頂点を取得\r
 156 \r
 157                 //変換行列から現在の座標系への変換パラメタを作成\r
 158                 calcPara(i_vertexs,conv_param);// 変換パラメータを求める\r
 159                 for(int y=0;y<ry2;y++){\r
 160                         for(int x=0;x<rx2;x++){\r
 161                                 final int ttx=(int)((conv_param[0]*x*y+conv_param[1]*x+conv_param[2]*y+conv_param[3])+0.5);\r
 162                                 final int tty=(int)((conv_param[4]*x*y+conv_param[5]*x+conv_param[6]*y+conv_param[7])+0.5);\r
 163                                 reader.getPixel((int)ttx,(int)tty,rgb_tmp);\r
 164                                 this._patdata[x+y*rx2]=(rgb_tmp[0]<<16)|(rgb_tmp[1]<<8)|rgb_tmp[2];                             \r
 165                         }\r
 166                 }\r
 167                 return true;\r
 168         }\r
 169 }