/// <summary>
/// This method returns coverage with blacke points on one squre defined by points
/// </summary>
/// <param name="pointSet"></param>
/// <param name="bitMap"></param>
/// <returns></returns>
private double CountBlackWhite(PointsStartEnd pointSet, Bitmap bitMap)
{
double result = 0;
int whiteCount = 0;
int blackCount = 0;
for (int x = pointSet.strat.X; x < pointSet.end.X; x++)
{
for (int y = pointSet.strat.Y; y < pointSet.end.Y; y++)
{
Color pixelColor = bitMap.GetPixel(x, y);
//zlicznaie baiłych pikseli
if (pixelColor.R + pixelColor.G + pixelColor.B >= 250)
{
whiteCount++;
}
//zliczanie czarnych pikseli
if (pixelColor.R + pixelColor.G + pixelColor.B == 0)
{
blackCount++;
}
}
}
int height = pointSet.end.Y - pointSet.strat.Y;
int width = pointSet.end.X - pointSet.strat.X;
int content = height * width;
result = (double)blackCount / (double)content;
return(result);
}
/// <summary>
/// This method determine latice (siatke) on character image
/// </summary>
/// <param name="img"></param>
/// <returns>list of points with first and last Point from space</returns>
private List <PointsStartEnd> CreatePointsTable(Bitmap img)
{
List <PointsStartEnd> list = new List <PointsStartEnd>();
int imgHeight = img.Height;
int imgWidth = img.Width;
int imgWidthDivided = imgWidth / 5;
int imgHeightDivided = imgHeight / 7;
for (int i = 0; i < imgHeight; i += imgHeightDivided)
{
for (int j = 0; j < imgWidth; j += imgWidthDivided)
{
PointsStartEnd buff = new PointsStartEnd();
if (j + imgWidthDivided <= imgWidth && i + imgHeightDivided <= imgHeight)
{
buff.strat = new System.Drawing.Point(j, i);
buff.end = new System.Drawing.Point(j + imgWidthDivided - 1, i + imgHeightDivided - 1);
list.Add(buff);
}
}
}
return(list);
}
