private List <SubMatrix> GetLettersUntrimmed(List <int> whiteColumns, Queue <int> spaceIndexes)
{
var factory = new TaskFactory <SubMatrix>();
var tasks = new List <Task <SubMatrix> >();
for (int i = 0; i < whiteColumns.Count - 1; ++i)
{
int space = whiteColumns[i + 1] - whiteColumns[i];
if (space > 1)
{
tasks.Add(factory.StartNew((Index) =>
{
int index = (int)Index;
return(matrix.GetSubMatrix(new Rectangle
{
X = whiteColumns[index],
Y = 0,
Width = whiteColumns[index + 1] - whiteColumns[index],
Height = matrix.Height
}));
}, i));
}
else if (spaceIndexes.Count > 0 && whiteColumns[i + 1] > spaceIndexes.Peek())
{
tasks.Add(factory.StartNew(() => null));
spaceIndexes.Dequeue();
}
}
return(tasks.Select(t => t.Result).ToList());
}
private SubMatrix TrimWhiteSpaceTopBot(SubMatrix matrix)
{
int top = 0, bot = 0;
try
{
for (int y = 0; y < matrix.Height; ++y)
{
if (GetCountOfBlackInRow(matrix, y) > 0)
{
top = y;
break;
}
}
for (int y = matrix.Height - 1; y > 0; --y)
{
if (GetCountOfBlackInRow(matrix, y) > 0)
{
bot = y + 1;
break;
}
}
return(matrix.GetSubMatrix(new Rectangle
{
X = 0,
Y = top,
Width = matrix.Width,
Height = bot - top
}));
} catch (Exception) { Console.WriteLine("Error for: {0} {1}", matrix.Height, matrix.Width); return(matrix); }
}
public List <SubMatrix> SplitToLines(SubMatrix matrix)
{
image = matrix;
List <int> whiteLinesIndexes = GetWhiteRows();
List <KeyValuePair <int, int> > indexToHeights = GetIndexesToHeight(whiteLinesIndexes).Result;
whiteLinesIndexes.Clear();
var factory = new TaskFactory <Rectangle>();
var tasks = indexToHeights.Select(pair => factory.StartNew(
() => GetLetterLine(pair.Key, pair.Value))).ToArray();
// met it like this?????
//List<Rectangle> rectangles = tasks.Select(task => task.Result).ToList();
//rectangles.RemoveAll(rect => rect.IsEmpty);
//rectangles.Clear();
//return indexToHeights.Select(kvp => new SubMatrix(matrix, new Rectangle { X = 0, Y = kvp.Key, Height = kvp.Value, Width = matrix.Width })
// ).ToList();
//
return(tasks.Select(t => matrix.GetSubMatrix(t.Result)).ToList());// new SubMatrix(matrix.Matrix, t.Result)).ToList();
}