public Size GetCharSize(char c, Color backgroundColor)
{
Bitmap bmp = new Bitmap(GetChar(c));
BitmapProcessor.Trim(ref bmp);
int minY = bmp.Height;
int maxY = 0;
for (int y = 0; y < bmp.Height; y++)
{
for (int x = 0; x < bmp.Width; x++)
{
Color color = bmp.GetPixel(x, y);
if (!BitmapProcessor.ColorsEqual(color, backgroundColor))
{
if (y < minY)
{
minY = y;
}
if (y > maxY)
{
maxY = y;
}
break;
}
}
}
int width = bmp.Width;
bmp.Dispose();
return(new Size(width, maxY - minY + 1));
}
/// <summary>Повертає зображення символа</summary>
/// <param name="c">Символ</param>
protected override Bitmap GetChar(char c)
{
Bitmap bitmap = new Bitmap((int)(fontHeight * 3), _imageHeight);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
g.DrawString(c + "", new System.Drawing.Font(family, fontHeight, fontStyle), new SolidBrush(Color.White), 0, 0);
BitmapProcessor.BlackAndWhite(ref bitmap, Color.White);
BitmapProcessor.Trim(ref bitmap, leave.ContainsKey(c) ? leave[c] : 0);
return(bitmap);
}
/// <summary>Задає висоту зображення шрифта</summary>
protected virtual void SetImageHeight()
{
Bitmap d = GetChar('(');
BitmapProcessor.Trim(ref d);
for (int y = d.Height - 1; y >= 0; y--)
{
for (int x = 0; x < d.Width; x++)
{
if (d.GetPixel(x, y).R != 255)
{
_imageHeight = y + 1;
return;
}
}
}
}
/// <summary>Розпінає текст</summary>
/// <param name="bmp">Зображення для розпізнавання</param>
/// <param name="allowedChars">Список дозволених символів</param>
/// <param name="textColor">Колір, яким написаний текст</param>
public string RecognizeText(Bitmap bmp, char[] allowedChars, Color textColor, object maxDiff, int maxColorDiff, Size expand)
{
if (!loaded)
{
Load();
}
if (textColor != Color.Empty)
{
BitmapProcessor.BlackAndWhite(ref bmp, textColor, maxColorDiff);
}
Bitmap expanded = BitmapProcessor.Expand(bmp, expand);
bmp.Dispose();
bmp = expanded;
BitmapProcessor.Trim(ref bmp, 2);
string result = new string(' ', bmp.Width);
if (BitmapProcessor.IsEmpty(bmp))
{
return("");
}
foreach (CharCollection cc in chars)
{
foreach (Char c in cc.chars)
{
if (allowedChars != null && !allowedChars.Contains(c.c))
{
continue;
}
int maxDiffInt = 0;
if (maxDiff is int)
{
maxDiffInt = (int)maxDiff;
}
else if (maxDiff is double)
{
maxDiffInt = (int)((double)c.bmp.Size.Width * (double)c.bmp.Size.Height * (double)maxDiff);
}
List <int> pos = BitmapProcessor.FindSmallerSubimage(bmp, c.bmp, maxDiffInt, int.MaxValue, false);
foreach (int p in pos)
{
bool ok = true;
for (int i = 0; i < c.bmp.Width; i++)
{
if (result[p + i] != ' ')
{
ok = false;
break;
}
}
if (ok)
{
result = result.Remove(p, 1);
result = result.Insert(p, c.c + "");
for (int i = 1; i < c.bmp.Width; i++)
{
if (result[p + i] == ' ')
{
result = result.Remove(p + i, 1);
result = result.Insert(p + i, "^");
}
}
}
}
}
}
result = result.Replace("^", "");
result = result.Replace(new string(' ', _spaceLength), "`");
result = result.Replace(" ", "");
result = result.Replace("`", " ");
if (allowedChars != null && !allowedChars.Contains(' '))
{
result = result.Replace(" ", "");
}
result = result.Trim();
return(result);
}