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1 // Filename : marksheet.h
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7
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2 // Last Change: 19-Oct-2011.
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3 //
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4 #ifndef __MARKSHEET__
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5 #define __MARKSHEET__
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6
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7 bool IsBlack( int r, int g, int b )
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8 {
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9 if ( r == 0 && g == 0 && b == 0 ) {
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10 return true;
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11 }
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12 return false;
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13 };
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14
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15 wxString GuessHhs( wxString& file )
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16 {
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17 wxString hhs;
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18 wxImage img( file, wxBITMAP_TYPE_JPEG );
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19 int sx = 1800; // start x
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20 int sy = 315;; // start y
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21 int bw = 60; // block width
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22 int bh = 50; // block height
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23 int area = bw * bh;
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24 int black = 0;
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25 int x, y;
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26 unsigned char r, g, b;
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27
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28 int max_n;
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29 float max;
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30 float bk;
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31 for ( int c=0; c<10; c++ ) {
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32 max = 0.0;
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33 max_n = -1;
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34 for ( int n=0; n<10; n++ ) {
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35
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36 for ( x=sx+bw*c; x<sx+bw*(c+1); x++ ) {
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37 for ( y=sy+bh*n; y<sy+bh*(n+1); y++ ) {
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38 r = img.GetRed( x, y );
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39 g = img.GetGreen( x, y );
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40 b = img.GetBlue( x, y );
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41 if( IsBlack( (int)r, (int)g, (int)b ) ) black++;
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42 }
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43 }
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44
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45 bk = (float)black / area;
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46 if ( max < bk ) {
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47 max = bk;
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48 max_n = n;
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49 }
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50 //wxPuts(wxString::Format(wxT("%d %f"),n,bk));
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51 black = 0;
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52 }
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53 hhs.Append( wxString::Format( wxT("%d"), max_n ) );
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54 }
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55
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56 return hhs;
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57 };
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58
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1
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59 bool IsMarksheet( wxString& file, float* brate, long* len )
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0
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60 {
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61 wxImage img( file, wxBITMAP_TYPE_JPEG );
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62 int black = 0;
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63 int x = 2465;
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64 int h = 3500;
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65 unsigned char r, g, b;
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66
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67 for ( int y=0; y<h; y++ ) {
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68 r = img.GetRed( x, y );
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69 g = img.GetGreen( x, y );
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70 b = img.GetBlue( x, y );
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71 if( IsBlack( (int)r, (int)g, (int)b ) ) black++;
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72 }
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73 float z = (float)black / h;
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74 float zmin = 0.095713;
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75 float zmax = 0.108600;
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76
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77 wxFile f( file );
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78 long l = f.Length();
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79 float lmin = 2072393;
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80 float lmax = 2346082;
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81
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82 *brate = z;
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83 *len = l;
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84 //wxPuts(wxString::Format(wxT("z = %f, len = %d"),z,len));
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85 if ( zmin < z && z < zmax
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86 && lmin < l && l < lmax ) {
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87 return true;
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88 }
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89 return false;
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90 };
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91
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92 #endif // __MARKSHEET__
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93
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