public string Recognize(Bitmap bmp, OCRCoupling coupling, out double errorDistance)
{
var ocr = RecognizeOCR(bmp, coupling);
errorDistance = ocr.Distance;
return(ocr.Value);
}
public PatternOCR(Dictionary <string, Bitmap> refdic, OCRCoupling coupling)
{
Coupling = coupling;
LoadReferencePatterns(refdic);
}
public OCRResult RecognizeOCR(Bitmap img, OCRCoupling coupling)
{
Coupling = coupling;
var ochars = RecognizeSingleCharacter(img);
var distances = new List <Tuple <int, int, double> >();
StringBuilder result = new StringBuilder();
OCRResult ocrResult = new OCRResult()
{
Characters = new List <OCRCharacterResult>(),
};
foreach (var ochar in ochars)
{
var euler = GetEulerNumber(ochar);
var activePixel = GetActivePixel(ochar);
var matches = references
.Select(p => new { Reference = p, Distance = GetImageDistance(ochar, p.Value, euler, p.Key) })
.OrderBy(p => p.Distance.Item3)
.ToList();
if (matches.Count == 0)
{
throw new Exception("No References");
}
else
{
if (activePixel == ochar.GetLength(0) * ochar.GetLength(1))
{
matches = matches
.Select(p => new { Reference = p.Reference, Distance = Tuple.Create(p.Distance.Item1, p.Distance.Item2, p.Distance.Item3 + ((p.Reference.Key == "-") ? 0 : 64), p.Distance.Item4) })
.OrderBy(p => p.Distance.Item3)
.ToList();
}
if (matches.First().Distance.Item3 > 70)
{
matches = matches
.Select(p => new { Reference = p.Reference, Distance = Tuple.Create(p.Distance.Item1, p.Distance.Item2, p.Distance.Item3 + ((p.Reference.Key == "-") ? 0 : 48), p.Distance.Item4) })
.OrderBy(p => p.Distance.Item3)
.ToList();
}
result.Append(matches.First().Reference.Key);
ocrResult.Characters.Add(new OCRCharacterResult()
{
Character = matches.First().Reference.Key,
OffsetX = matches.First().Distance.Item1,
OffsetY = matches.First().Distance.Item2,
Distance = matches.First().Distance.Item3,
EulerNumber = matches.First().Distance.Item4,
AllDistances = matches.ToDictionary(p => p.Reference.Key, p => p.Distance.Item3),
});
}
}
ocrResult.Value = result.ToString();
ocrResult.Distance = (ocrResult.Characters.Count == 0) ? 0 : ocrResult.Characters.Max(p => p.Distance);
return(ocrResult);
}
public PatternOCR(OCRCoupling coupling)
{
Coupling = coupling;
references = new Dictionary <string, byte[, ]>();
}
