public BinaryRecognition()
{
this.charCache = BinaryChar.GetBinaryChars().ToArray();
}
private double scoreGlyph(CachedBitmap img, BinaryChar glyph, int xPen)
{
int nextColumn = img.CacheNextFilledColumn.ElementAtOrDefault(xPen + 2);
int nextEmptyColumn = img.CacheNextEmptyColumn.ElementAtOrDefault(xPen + glyph.Bitmap.Width);
int endColumn = img.CacheNextFilledColumn.ElementAtOrDefault(xPen + glyph.Bitmap.Width + 4);
int prevColumn = img.CachePrevFilledColumn.ElementAtOrDefault(xPen + glyph.Bitmap.Width + 1);
if (nextColumn == -1 || prevColumn == -1)
{
return(-9999d);
}
if (nextColumn - xPen < 2 || (endColumn == -1 && prevColumn - xPen < 2))
{
return(-9999d);
}
if (nextEmptyColumn == -1 || nextEmptyColumn - xPen > 80)
{
return(-9999d);
}
int estimatedWidthDiff = Math.Abs((nextEmptyColumn - xPen) - glyph.Bitmap.Width);
double estimatedWidthBonus = 1d / (estimatedWidthDiff + 1d);
double wrongColumns = 0d;
for (int x = xPen; x < (xPen + glyph.Bitmap.Width); x++)
{
wrongColumns += Math.Abs(img.CacheColumnFilling.ElementAtOrDefault(x) - glyph.Bitmap.CacheColumnFilling.ElementAtOrDefault(x - xPen));
}
if (glyph.Bitmap.Width < 5)
{
wrongColumns = 0d;
}
else
{
wrongColumns /= glyph.Bitmap.Width;
}
double nonMatchingPixels = 0d;
double glyphDistanceSum = 0d;
double glyphDistanceMax = 0d;
double glyphPixelNum = 0d;
double targetDistanceSum = 0d;
double targetDistanceNum = 0d;
double targetDistanceMax = 0d;
double targetPixelNum = 0d;
for (int y = 0; y < img.Height; y++)
{
for (int x = 0; x < glyph.Bitmap.Width; x++)
{
if (glyph.Bitmap.CacheNearestBinaryPixel[y].ElementAtOrDefault(x) == 0)
{
glyphPixelNum++;
double distance = img.CacheNearestBinaryPixel[y].ElementAtOrDefault(x + xPen);
glyphDistanceSum += distance;
glyphDistanceMax = Math.Max(glyphDistanceMax, distance);
}
if (img.CacheNearestBinaryPixel[y].ElementAtOrDefault(x + xPen) == 0)
{
targetPixelNum++;
double distance = glyph.Bitmap.CacheNearestBinaryPixel[y][x];
targetDistanceSum += distance;
targetDistanceNum++;
targetDistanceMax = Math.Max(targetDistanceMax, distance);
}
if ((img.CacheNearestBinaryPixel[y].ElementAtOrDefault(x + xPen) <= 1) ^ (glyph.Bitmap.CacheNearestBinaryPixel[y].ElementAtOrDefault(x) <= 1))
{
nonMatchingPixels++;
}
}
}
List <double> scoreParts = new List <double>()
{
-Math.Pow(glyphDistanceMax <= 1 ? 0d : glyphDistanceMax, 1.5d) * 5,
-glyphDistanceSum / (glyphPixelNum * 0.1d),
-glyphDistanceSum * 0.05d,
-Math.Pow(targetDistanceMax <= 1 ? 0d : targetDistanceMax, 1.5d) * 10d,
-(targetDistanceSum / targetDistanceNum) * 25d,
-targetDistanceSum * 0.1d,
-nonMatchingPixels * 0.05d,
+(glyph.Bitmap.Width < 8 ? -5d + (glyph.Bitmap.Width * 0.5d) : 20 + (glyph.Bitmap.Width - 8) * 0.5),
+estimatedWidthBonus * 19d,
(glyph.Bitmap.Width < 8 && estimatedWidthBonus < 0.5) ? -10 : 0,
(glyph.Bitmap.Width <8 && estimatedWidthBonus> 0.5) ? 10 : 0,
glyphPixelNum * 0.075,
};
double score = 0f;
foreach (double scorePart in scoreParts)
{
if (!Double.IsNaN(scorePart))
{
score += scorePart;
}
else
{
}
}
return(score);
}
