trunk/src/jp/nyatla/nyartoolkit/core/rasterfilter/rgb2gs/NyARRasterFilter_Rgb2Gs_AveAdd.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.rasterfilter.rgb2gs;\r
  32 \r
  33 import jp.nyatla.nyartoolkit.NyARException;\r
  34 import jp.nyatla.nyartoolkit.core.raster.*;\r
  35 import jp.nyatla.nyartoolkit.core.raster.rgb.INyARRgbRaster;\r
  36 import jp.nyatla.nyartoolkit.core.types.NyARIntSize;\r
  37 \r
  38 /**\r
  39  * RGBラスタをGrayScaleに変換するフィルタを作成します。\r
  40  * このフィルタは、RGB値の平均値を、(R+G+B)/3で算出します。\r
  41  *\r
  42  */\r
  43 public class NyARRasterFilter_Rgb2Gs_AveAdd implements INyARRasterFilter_Rgb2Gs\r
  44 {\r
  45         IdoThFilterImpl _do_filter_impl;\r
  46         public NyARRasterFilter_Rgb2Gs_AveAdd(int i_in_raster_type,int i_out_raster_type) throws NyARException\r
  47         {\r
  48                 if(!initInstance(i_in_raster_type,i_out_raster_type))\r
  49                 {\r
  50                         throw new NyARException();\r
  51                 }\r
  52         }\r
  53         public NyARRasterFilter_Rgb2Gs_AveAdd(int i_in_raster_type) throws NyARException\r
  54         {\r
  55                 if(!initInstance(i_in_raster_type,NyARBufferType.INT1D_GRAY_8))\r
  56                 {\r
  57                         throw new NyARException();\r
  58                 }\r
  59         }\r
  60         protected boolean initInstance(int i_in_raster_type,int i_out_raster_type)\r
  61         {\r
  62                 switch(i_out_raster_type){\r
  63                 case NyARBufferType.INT1D_GRAY_8:\r
  64                         switch (i_in_raster_type){\r
  65                         case NyARBufferType.BYTE1D_B8G8R8_24:\r
  66                         case NyARBufferType.BYTE1D_R8G8B8_24:\r
  67                                 this._do_filter_impl=new doThFilterImpl_BYTE1D_B8G8R8_24();\r
  68                                 break;\r
  69                         case NyARBufferType.BYTE1D_B8G8R8X8_32:\r
  70                                 this._do_filter_impl=new doThFilterImpl_BYTE1D_B8G8R8X8_32();\r
  71                                 break;\r
  72                         default:\r
  73                                 return false;\r
  74                         }\r
  75                         break;\r
  76                 default:\r
  77                         return false;\r
  78                 }\r
  79                 return true;\r
  80         }\r
  81         \r
  82         public void doFilter(INyARRgbRaster i_input, NyARGrayscaleRaster i_output) throws NyARException\r
  83         {\r
  84                 assert (i_input.getSize().isEqualSize(i_output.getSize()) == true);\r
  85                 this._do_filter_impl.doFilter(i_input,i_output,i_input.getSize());\r
  86                 return;\r
  87         }\r
  88         \r
  89         /*\r
  90          * ここから各種ラスタ向けのフィルタ実装\r
  91          *\r
  92          */\r
  93         interface IdoThFilterImpl\r
  94         {\r
  95                 public void doFilter(INyARRaster i_input, INyARRaster i_output,NyARIntSize i_size);\r
  96         }\r
  97         class doThFilterImpl_BYTE1D_B8G8R8_24 implements IdoThFilterImpl\r
  98         {\r
  99                 public void doFilter(INyARRaster i_input, INyARRaster i_output,NyARIntSize i_size)\r
 100                 {\r
 101                         assert(i_output.isEqualBufferType(NyARBufferType.INT1D_GRAY_8));\r
 102                         int[] out_buf = (int[]) i_output.getBuffer();\r
 103                         byte[] in_buf = (byte[]) i_input.getBuffer();\r
 104                         \r
 105                         int bp = 0;\r
 106                         for (int y = 0; y < i_size.h; y++) {\r
 107                                 for (int x = 0; x < i_size.w; x++) {\r
 108                                         out_buf[y*i_size.w+x] = ((in_buf[bp] & 0xff) + (in_buf[bp + 1] & 0xff) + (in_buf[bp + 2] & 0xff)) / 3;\r
 109                                         bp += 3;\r
 110                                 }\r
 111                         }\r
 112                         return;\r
 113                 }               \r
 114         }\r
 115         class doThFilterImpl_BYTE1D_B8G8R8X8_32 implements IdoThFilterImpl\r
 116         {\r
 117                 public void doFilter(INyARRaster i_input, INyARRaster i_output,NyARIntSize i_size)\r
 118                 {\r
 119                         assert(i_output.isEqualBufferType(NyARBufferType.INT1D_GRAY_8));\r
 120                         int[] out_buf = (int[]) i_output.getBuffer();\r
 121                         byte[] in_buf = (byte[]) i_input.getBuffer();\r
 122 \r
 123                         int bp = 0;\r
 124                         for (int y = 0; y < i_size.h; y++) {\r
 125                                 for (int x = 0; x < i_size.w; x++) {\r
 126                                         out_buf[y*i_size.w+x] = ((in_buf[bp] & 0xff) + (in_buf[bp + 1] & 0xff) + (in_buf[bp + 2] & 0xff)) / 3;\r
 127                                         bp += 4;\r
 128                                 }\r
 129                         }\r
 130                 }\r
 131         }\r
 132         \r
 133         \r
 134         \r
 135 }\r
 136 \r
 137 \r
 138 \r
 139 \r
 140 \r
 141 \r