车牌字符模板特征值的提取方法

// 车牌字符模板特征值
const int Num_Templete[TEMPLETENUM][CHARACTER]=
{
  {16,19,10,12,10,10,15,18,110,3,2,2,3,3,3},     //0
  {9,11,10,10,10,10,9,10,79,2,2,2,0,2,12},       //1
  {18,19,3,18,10,10,23,22,123,4,2,2,7,6,8},      //2
  {19,21,11,14,4,20,18,22,129,2,2,4,6,6,7},      //3
  {2,18,11,22,20,21,11,18,123,2,4,2,6,7,5},      //4
  {23,19,20,12,9,20,18,22,143,2,4,4,6,6,6},      //5
  {6,13,17,8,15,20,18,20,117,2,2,4,5,7,6},       //6
  {21,21,0,20,8,12,9,11,102,2,2,2,2,8,15},       //7
  {17,18,18,19,14,20,17,20,143,4,2,4,6,6,6},     //8
  {16,18,15,21,7,19,13,7,116,3,2,2,6,6,5},       //9
  {10,10,16,16,20,20,18,19,129,2,4,2,8,3,6},     //A
  {24,20,20,19,22,22,24,20,171,4,8,4,6,6,6},     //B
  {18,19,20,4,20,8,17,21,127,3,2,4,4,4,4},       //C
  {23,19,11,20,12,20,22,21,148,3,3,3,4,4,4},     //D
  {23,19,21,9,22,8,23,23,148,2,2,2,6,6,6},       //E
  {25,17,20,9,22,8,19,0,120,2,2,2,4,4,4},        //F
  {17,18,22,14,12,24,18,21,146,4,7,4,4,6,6},     //G
  {14,20,18,22,17,22,16,20,149,4,1,4,2,2,2},     //H
  {0,17,0,20,3,20,18,22,100,2,2,4,2,2,2},        //J
  {19,20,26,10,20,20,20,22,157,4,4,4,3,5,11},    //K
  {20,0,20,0,20,0,25,20,105,2,2,2,2,2,2},        //L
  {20,10,27,17,20,10,22,14,140,1,3,3,4,1,5},     //M
  {21,12,25,17,26,12,18,18,149,3,5,3,5,5,6},     //N 
  {23,19,18,20,21,8,22,0,131,3,3,2,4,4,4},       //P
  {18,19,20,10,26,15,18,21,147,3,3,4,5,7,5},     //Q
  {26,19,21,18,21,17,20,21,163,4,3,4,4,6,5},     //R
  {18,18,18,10,8,17,17,22,128,4,3,4,6,6,6},      //S
  {22,18,10,10,10,10,10,10,100,2,2,2,33,2,2},    //T
  {18,12,20,10,20,10,19,21,130,3,3,3,2,2,2},     //U
  {20,19,20,20,15,14,9,10,127,4,4,2,9,1,8},      //V
  {21,25,26,28,16,16,21,19,172,6,2,4,13,0,7},    //W
  {21,21,13,13,12,11,22,21,134,4,2,4,8,0,10},    //X
  {21,20,10,11,10,10,10,11,103,3,2,2,5,2,6},     //Y
  {21,23,5,15,15,5,24,20,128,2,2,2,8,8,7},       //Z
  {13,14,10,10,10,10,13,13,93,2,2,2,29,2,29},    //I
  {20,20,13,20,19,12,17,20,141,3,3,4,4,4,4},     //O          //36
  {14,15,17,17,16,10,25,24,138,0,2,4,12,8,9},    //云        //37
  {17,20,17,12,33,28,23,20,170,3,4,7,13,6,4},    //苏
  {21,21,23,24,24,25,31,27,196,0,9,6,8,6,7},     //京
  {19,27,20,34,19,36,24,37,216,4,4,7,13,28,3},   //湘
  {17,14,23,27,36,40,26,27,210,4,13,4,16,14,14}, //鲁
  {24,24,32,38,34,32,17,22,223,9,6,10,11,12,9}, // 粤
  {22,20,33,37,25,24,24,25,210,13,3,6,12,8,7},     //蒙
  {22,20,33,37,25,24,24,25,210,13,3,6,12,8,7}     //皖

};

将待识别字符规一化成40*20的标准字符。然后提取特征：
1. 前8个的特征的特取算法是将规一化一的字符打成4行2列的网格，分别统计各网格内的灰度值。
2. 第9个特征为前8个特征的和；
3. 10－12个特征分别为第10行，20行，30行的灰度值和；
4. 13-15个特征分别为第7列，10列，13列的灰度值和；
总共是15维的特征。