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1 // Filename : testtune.cpp
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2 // Last Change: 29-Sep-2011.
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3 //
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4
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5 #include "wx/utils.h"
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6 #include "wx/file.h"
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7 #include "wx/string.h"
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8 #include "wx/image.h"
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9
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10 bool IsBlack( int r, int g, int b )
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11 {
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12 if ( r == 0 && g == 0 && b == 0 ) {
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13 return true;
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14 }
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15 return false;
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16 }
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17
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18 wxString GuessHhs( wxString& file )
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19 {
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20 wxString hhs;
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21 wxImage img( file, wxBITMAP_TYPE_JPEG );
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22 int sx = 1800; // start x
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23 int sy = 315;; // start y
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24 int bw = 60; // block width
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25 int bh = 50; // block height
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26 int area = bw * bh;
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27 int black = 0;
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28 int x, y;
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29 unsigned char r, g, b;
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30
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31 int max_n;
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32 float max;
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33 float bk;
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34 for ( int c=0; c<10; c++ ) {
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35 max = 0.0;
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36 max_n = -1;
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37 for ( int n=0; n<10; n++ ) {
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38
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39 for ( x=sx+bw*c; x<sx+bw*(c+1); x++ ) {
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40 for ( y=sy+bh*n; y<sy+bh*(n+1); y++ ) {
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41 r = img.GetRed( x, y );
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42 g = img.GetGreen( x, y );
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43 b = img.GetBlue( x, y );
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44 if( IsBlack( (int)r, (int)g, (int)b ) ) black++;
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45 }
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46 }
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47
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48 bk = (float)black / area;
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49 if ( max < bk ) {
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50 max = bk;
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51 max_n = n;
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52 }
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53 //wxPuts(wxString::Format(wxT("%d %f"),n,bk));
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54 black = 0;
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55 }
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56 hhs.Append( wxString::Format( wxT("%d"), max_n ) );
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57 }
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58
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59 return hhs;
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60 }
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61
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62 bool IsMarksheet( wxString& file )
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63 {
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64 wxImage img( file, wxBITMAP_TYPE_JPEG );
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65 int black = 0;
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66 int x = 2465;
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67 int h = 3500;
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68 unsigned char r, g, b;
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69
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70 for ( int y=0; y<h; y++ ) {
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71 r = img.GetRed( x, y );
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72 g = img.GetGreen( x, y );
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73 b = img.GetBlue( x, y );
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74 if( IsBlack( (int)r, (int)g, (int)b ) ) black++;
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75 }
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76 float z = (float)black / h;
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77 float zmin = 0.103428 * 0.95;
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78 float zmax = 0.103428 * 1.05;
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79
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80 wxFile f( file );
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81 long l = f.Length();
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82 float lmin = 2181468 * 0.95;
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83 float lmax = 2181468 * 1.05;
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84
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85 //wxPuts(wxString::Format(wxT("z = %f, len = %d"),z,len));
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86 if ( zmin < z && z < zmax
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87 && lmin < l && l < lmax ) {
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88 return true;
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89 }
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90 return false;
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91 }
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92
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93 int main( int argc, char **argv )
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94 {
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95 wxInitAllImageHandlers();
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96 wxString file = wxT("img\\img081.jpg");
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97
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98 if ( IsMarksheet( file ) ) wxPuts(wxT("perhaps marksheet !"));
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99 wxString hhs = GuessHhs( file );
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100 wxPuts(hhs);
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101
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102 }
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103
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