public static uint[] ProjectSubImageOnHorizontalLine(GrayImage image, SplitMultiLines.Line line)
{
int width = image.Width;
var density = new uint[width];
int stop = line.StartSpace * width;
Parallel.For(0, width, (j) =>
{
int start = width * line.StartText + j;
uint lineProject = 0;
for (int index = start; index < stop; index += width)
{
if (image.Pixels[index] > 0)
{
lineProject++;
}
}
density[j] = lineProject;
});
return(density);
}
public static uint[] ProjectSubImageOnVerticalLine(GrayImage image, SplitMultiLines.Line line)
{
int width = image.Width;
var density = new uint[image.Height];
int lineWidth = line.StartSpace - line.StartText;
Parallel.For(0, density.Length, (i) =>
{
int index = i * width + line.StartText;
uint lineProject = 0;
for (int j = 0; j < lineWidth; j++)
{
if (image.Pixels[index] > 0)
{
lineProject++;
}
index++;
}
density[i] = lineProject;
});
return(density);
}
public static List <TextBlock> FindAllTextBlock(GrayImage image, uint[] density, SplitMultiLines.Line line, int lineIndex)
{
if (lineIndex == 0)
{
AvgGapBlocks.Clear();
AvgGapIntraChars.Clear();
}
startIndex = line.StartText;
stopIndex = line.StartSpace;
var blocks = InitTextBlocks(image, density, lineIndex);
if (blocks.Count < 2)
{
return(blocks);
}
GetAverageParams(blocks);
PreProcessAllBlocksType(blocks, density, image);
CalculateAverageGaps(blocks);
MergeMarkBlocks(blocks);
CalculateAverageGaps(blocks);
MergeHalfCharBlocks(blocks);
CalculateAverageGaps(blocks);
GetTextBlockRatio(blocks);
AvgGapBlocks.Add(avgGapBlock);
AvgGapIntraChars.Add(avgGapIntraChar);
return(blocks);
}
