lib/src/jp/nyatla/nyartoolkit/core/rasterfilter/NyARRasterFilter_Rgb2Hsv.java

   1 package jp.nyatla.nyartoolkit.core.rasterfilter;\r
   2 \r
   3 import jp.nyatla.nyartoolkit.NyARException;\r
   4 import jp.nyatla.nyartoolkit.core.raster.*;\r
   5 import jp.nyatla.nyartoolkit.core.types.NyARBufferType;\r
   6 import jp.nyatla.nyartoolkit.core.types.NyARIntSize;\r
   7 \r
   8 /**\r
   9  * RGB画像をHSV画像に変換します。\r
  10  *\r
  11  */\r
  12 public class NyARRasterFilter_Rgb2Hsv implements INyARRasterFilter\r
  13 {\r
  14         private IdoFilterImpl _dofilterimpl;\r
  15         public NyARRasterFilter_Rgb2Hsv(int i_raster_type) throws NyARException\r
  16         {\r
  17                 switch (i_raster_type) {\r
  18                 case NyARBufferType.BYTE1D_B8G8R8_24:\r
  19                         this._dofilterimpl=new IdoFilterImpl_BYTE1D_B8G8R8_24();\r
  20                         break;\r
  21                 case NyARBufferType.BYTE1D_R8G8B8_24:\r
  22                 default:\r
  23                         throw new NyARException();\r
  24                 }\r
  25         }\r
  26         public void doFilter(INyARRaster i_input, INyARRaster i_output) throws NyARException\r
  27         {\r
  28                 assert (i_input.getSize().isEqualSize(i_output.getSize()) == true);\r
  29                 this._dofilterimpl.doFilter(i_input,i_output,i_input.getSize());\r
  30         }\r
  31         \r
  32         abstract class IdoFilterImpl\r
  33         {\r
  34                 public abstract void doFilter(INyARRaster i_input, INyARRaster i_output,NyARIntSize i_size) throws NyARException;\r
  35                 \r
  36         }\r
  37         class IdoFilterImpl_BYTE1D_B8G8R8_24 extends IdoFilterImpl\r
  38         {\r
  39                 public void doFilter(INyARRaster i_input, INyARRaster i_output,NyARIntSize i_size) throws NyARException\r
  40                 {\r
  41                         assert(         i_input.isEqualBufferType(NyARBufferType.INT1D_X7H9S8V8_32));\r
  42                         \r
  43                         int[] out_buf = (int[]) i_output.getBuffer();\r
  44                         byte[] in_buf = (byte[]) i_input.getBuffer();\r
  45                         int s;\r
  46                         for(int i=i_size.h*i_size.w-1;i>=0;i--)\r
  47                         {\r
  48                                 int r=(in_buf[i*3+2] & 0xff);\r
  49                                 int g=(in_buf[i*3+1] & 0xff);\r
  50                                 int b=(in_buf[i*3+0] & 0xff);\r
  51                                 int cmax,cmin;\r
  52                                 //最大値と最小値を計算\r
  53                                 if(r>g){\r
  54                                         cmax=r;\r
  55                                         cmin=g;\r
  56                                 }else{\r
  57                                         cmax=g;\r
  58                                         cmin=r;\r
  59                                 }\r
  60                                 if(b>cmax){\r
  61                                         cmax=b;\r
  62                                 }\r
  63                                 if(b<cmin){\r
  64                                         cmin=b;\r
  65                                 }\r
  66                                 int h;\r
  67                                 if(cmax==0) {\r
  68                                         s=0;\r
  69                                         h=0;\r
  70                                 }else {\r
  71                                         s=(cmax-cmin)*255/cmax;\r
  72                                         int cdes=cmax-cmin;\r
  73                                         //H成分を計算\r
  74                                         if(cdes!=0){\r
  75                                                 if(cmax==r){\r
  76                                                         h=(g-b)*60/cdes;\r
  77                                                 }else if(cmax==g){\r
  78                                                         h=(b-r)*60/cdes+2*60;\r
  79                                                 }else{\r
  80                                                         h=(r-g)*60/cdes+4*60;\r
  81                                                 }\r
  82                                         }else{\r
  83                                                 h=0;\r
  84                                         }\r
  85                                 }\r
  86                                 if(h<0)\r
  87                                 {\r
  88                                         h+=360;\r
  89                                 }\r
  90                                 //hsv変換(h9s8v8)\r
  91                                 out_buf[i]=(0x1ff0000&(h<<16))|(0x00ff00&(s<<8))|(cmax&0xff);\r
  92                         }\r
  93                         return;\r
  94                 }\r
  95         }       \r
  96 }