private static void FindBestMatchNew(ref int index, ref int smallestDifference, ref int smallestIndex, NikseBitmap target, BinaryOcrDb binOcrDb, BinaryOcrBitmap bob, double maxDiff)
{
var bobExactMatch = binOcrDb.FindExactMatch(bob);
if (bobExactMatch >= 0)
{
index = bobExactMatch;
smallestDifference = 0;
smallestIndex = bobExactMatch;
return;
}
if (maxDiff < 0.2 || target.Width < 3 || target.Height < 5)
return;
int numberOfForegroundColors = bob.NumberOfColoredPixels;
const int minForeColorMatch = 90;
index = 0;
foreach (var compareItem in binOcrDb.CompareImages)
{
if (compareItem.Width == target.Width && compareItem.Height == target.Height) // precise math in size
{
if (Math.Abs(compareItem.NumberOfColoredPixels - numberOfForegroundColors) < 3)
{
int dif = NikseBitmapImageSplitter.IsBitmapsAlike(compareItem, target);
if (dif < smallestDifference)
{
smallestDifference = dif;
smallestIndex = index;
if (dif < 3)
{
break; // foreach ending
}
}
}
}
index++;
}
if (smallestDifference > 1)
{
index = 0;
foreach (var compareItem in binOcrDb.CompareImages)
{
if (compareItem.Width == target.Width && compareItem.Height == target.Height) // precise math in size
{
if (Math.Abs(compareItem.NumberOfColoredPixels - numberOfForegroundColors) < 40)
{
int dif = NikseBitmapImageSplitter.IsBitmapsAlike(compareItem, target);
if (dif < smallestDifference)
{
smallestDifference = dif;
smallestIndex = index;
if (dif == 0)
{
break; // foreach ending
}
}
}
}
index++;
}
}
if (target.Width > 16 && target.Height > 16 && smallestDifference > 2) // for other than very narrow letter (like 'i' and 'l' and 'I'), try more sizes
{
index = 0;
foreach (var compareItem in binOcrDb.CompareImages)
{
if (compareItem.Width == target.Width && compareItem.Height == target.Height - 1)
{
if (Math.Abs(compareItem.NumberOfColoredPixels - numberOfForegroundColors) < minForeColorMatch)
{
int dif = NikseBitmapImageSplitter.IsBitmapsAlike(compareItem, target);
if (dif < smallestDifference)
{
smallestDifference = dif;
smallestIndex = index;
if (dif == 0)
break; // foreach ending
}
}
}
index++;
}
if (smallestDifference > 2)
{
index = 0;
foreach (var compareItem in binOcrDb.CompareImages)
{
if (compareItem.Width == target.Width && compareItem.Height == target.Height + 1)
{
if (Math.Abs(compareItem.NumberOfColoredPixels - numberOfForegroundColors) < minForeColorMatch)
{
int dif = NikseBitmapImageSplitter.IsBitmapsAlike(target, compareItem);
if (dif < smallestDifference)
{
smallestDifference = dif;
smallestIndex = index;
if (dif == 0)
break; // foreach ending
}
}
}
index++;
}
}
if (smallestDifference > 3)
{
index = 0;
foreach (var compareItem in binOcrDb.CompareImages)
{
if (compareItem.Width == target.Width + 1 && compareItem.Height == target.Height + 1)
{
if (Math.Abs(compareItem.NumberOfColoredPixels - numberOfForegroundColors) < minForeColorMatch)
{
int dif = NikseBitmapImageSplitter.IsBitmapsAlike(target, compareItem);
if (dif < smallestDifference)
{
smallestDifference = dif;
smallestIndex = index;
if (dif == 0)
break; // foreach ending
}
}
}
index++;
}
}
if (smallestDifference > 5)
{
index = 0;
foreach (var compareItem in binOcrDb.CompareImages)
{
if (compareItem.Width == target.Width - 1 && compareItem.Height == target.Height - 1)
{
if (Math.Abs(compareItem.NumberOfColoredPixels - numberOfForegroundColors) < minForeColorMatch)
{
int dif = NikseBitmapImageSplitter.IsBitmapsAlike(compareItem, target);
if (dif < smallestDifference)
{
smallestDifference = dif;
smallestIndex = index;
if (dif == 0)
break; // foreach ending
}
}
}
index++;
}
}
if (smallestDifference > 5)
{
index = 0;
foreach (var compareItem in binOcrDb.CompareImages)
{
if (compareItem.Width - 1 == target.Width && compareItem.Height == target.Height)
{
if (Math.Abs(compareItem.NumberOfColoredPixels - numberOfForegroundColors) < minForeColorMatch)
{
int dif = NikseBitmapImageSplitter.IsBitmapsAlike(target, compareItem);
if (dif < smallestDifference)
{
smallestDifference = dif;
smallestIndex = index;
if (dif == 0)
break; // foreach ending
}
}
}
index++;
}
}
if (smallestDifference > 9 && target.Width > 11)
{
index = 0;
foreach (var compareItem in binOcrDb.CompareImages)
{
if (compareItem.Width == target.Width - 2 && compareItem.Height == target.Height)
{
if (Math.Abs(compareItem.NumberOfColoredPixels - numberOfForegroundColors) < minForeColorMatch)
{
int dif = NikseBitmapImageSplitter.IsBitmapsAlike(compareItem, target);
if (dif < smallestDifference)
{
smallestDifference = dif;
smallestIndex = index;
if (dif == 0)
break; // foreach ending
}
}
}
index++;
}
}
if (smallestDifference > 9 && target.Width > 14)
{
index = 0;
foreach (var compareItem in binOcrDb.CompareImages)
{
if (compareItem.Width == target.Width - 3 && compareItem.Height == target.Height)
{
if (Math.Abs(compareItem.NumberOfColoredPixels - numberOfForegroundColors) < minForeColorMatch)
{
int dif = NikseBitmapImageSplitter.IsBitmapsAlike(compareItem, target);
if (dif < smallestDifference)
{
smallestDifference = dif;
smallestIndex = index;
if (dif == 0)
break; // foreach ending
}
}
}
index++;
}
}
if (smallestDifference > 9 && target.Width > 14)
{
index = 0;
foreach (var compareItem in binOcrDb.CompareImages)
{
if (compareItem.Width == target.Width && compareItem.Height == target.Height - 3)
{
if (Math.Abs(compareItem.NumberOfColoredPixels - numberOfForegroundColors) < minForeColorMatch)
{
int dif = NikseBitmapImageSplitter.IsBitmapsAlike(compareItem, target);
if (dif < smallestDifference)
{
smallestDifference = dif;
smallestIndex = index;
if (dif == 0)
break; // foreach ending
}
}
}
index++;
}
}
if (smallestDifference > 9 && target.Width > 14)
{
index = 0;
foreach (var compareItem in binOcrDb.CompareImages)
{
if (compareItem.Width - 2 == target.Width && compareItem.Height == target.Height)
{
if (Math.Abs(compareItem.NumberOfColoredPixels - numberOfForegroundColors) < minForeColorMatch)
{
int dif = NikseBitmapImageSplitter.IsBitmapsAlike(target, compareItem);
if (dif < smallestDifference)
{
smallestDifference = dif;
smallestIndex = index;
if (dif == 0)
break; // foreach ending
}
}
}
index++;
}
}
}
if (smallestDifference == 0)
{
if (smallestIndex > 200)
{
var hit = binOcrDb.CompareImages[smallestIndex];
binOcrDb.CompareImages.RemoveAt(smallestIndex);
binOcrDb.CompareImages.Insert(0, hit);
smallestIndex = 0;
index = 0;
}
}
}
