public static void Run()
{
var exporter = new PageXmlTextExporter(NearestNeighbourWordExtractor.Instance,
RecursiveXYCut.Instance,
UnsupervisedReadingOrderDetector.Instance,
scale: zoom);
using (var converter = new PdfImageConverter(pdfPath))
using (PdfDocument document = PdfDocument.Open(pdfPath))
{
var page = document.GetPage(pageNo);
var xml = exporter.Get(page);
File.WriteAllText(Path.ChangeExtension(pdfPath, pageNo + ".xml"), xml);
using (var bitmap = converter.GetPage(page.Number, zoom))
using (var graphics = Graphics.FromImage(bitmap))
{
// save pdf page as image
bitmap.Save(Path.ChangeExtension(pdfPath, pageNo + "_raw.png"));
// save empty image for LayoutEvalGUI
Bitmap blackAndWhite = new Bitmap(bitmap.Width, bitmap.Height, PixelFormat.Format8bppIndexed);
blackAndWhite.Save(Path.ChangeExtension(pdfPath, pageNo + "_bw_raw.png"));
}
}
}
public static void Run(string path)
{
float zoom = 10;
var redPen = new Pen(Color.Red, zoom * 0.4f);
using (var converter = new PdfImageConverter(path))
using (var document = PdfDocument.Open(path))
{
for (var i = 0; i < document.NumberOfPages; i++)
{
var page = document.GetPage(i + 1);
using (var bitmap = converter.GetPage(i + 1, zoom))
using (var graphics = Graphics.FromImage(bitmap))
{
var imageHeight = bitmap.Height;
foreach (var letter in page.Letters)
{
Console.WriteLine(letter.TextDirection);
var height = letter.GlyphRectangle.Height;
var rect = new Rectangle(
(int)(letter.GlyphRectangle.Left * (decimal)zoom),
imageHeight - (int)(letter.GlyphRectangle.Top * (decimal)zoom),
(int)((letter.GlyphRectangle.Width == 0 ? 1 : letter.GlyphRectangle.Width) * (decimal)zoom),
(int)((letter.GlyphRectangle.Height == 0 ? 1 : letter.GlyphRectangle.Height) * (decimal)zoom));
graphics.DrawRectangle(redPen, rect);
}
bitmap.Save(Path.ChangeExtension(path, (i + 1) + "_imageTest.png"));
}
}
}
}
public string GetCode(string documentPath)
{
_documentPath = documentPath;
var pageNumber = 0;
string hocr = "";
using (var document = PdfDocument.Open(documentPath))
{
pageNumber = document.NumberOfPages;
hocr = GetCode(document);
}
using (var converter = new PdfImageConverter(documentPath))
{
for (var i = 0; i < pageNumber; i++)
{
using (var bitmap = converter.GetPage(i + 1, (float)_scale))
using (var graphics = Graphics.FromImage(bitmap))
{
bitmap.Save(GetPageImagePath(documentPath, i + 1));
}
}
}
return(hocr);
}
public static void Run(string path)
{
float zoom = 3;
var pinkPen = new Pen(Color.HotPink, zoom * 0.4f);
var greenPen = new Pen(Color.GreenYellow, zoom * 0.6f);
var bluePen = new Pen(Color.Fuchsia, zoom * 2.0f);
using (var converter = new PdfImageConverter(path))
using (PdfDocument document = PdfDocument.Open(path))
{
for (var i = 0; i < document.NumberOfPages; i++)
{
var page = document.GetPage(i + 1);
using (var bitmap = converter.GetPage(i + 1, zoom))
using (var graphics = Graphics.FromImage(bitmap))
{
var imageHeight = bitmap.Height;
var words = page.GetWords(NearestNeighbourWordExtractor.Instance);
var pageWordsH = words.Where(x => x.TextDirection == TextDirection.Horizontal || x.TextDirection == TextDirection.Rotate180).ToArray();
var blocks = new RecursiveXYCutLocal(path, i + 1).GetBlocks(pageWordsH);
foreach (var block in blocks)
{
var rect = new Rectangle(
(int)(block.BoundingBox.Left * (decimal)zoom),
imageHeight - (int)(block.BoundingBox.Top * (decimal)zoom),
(int)(block.BoundingBox.Width * (decimal)zoom),
(int)(block.BoundingBox.Height * (decimal)zoom));
graphics.DrawRectangle(bluePen, rect);
}
bitmap.Save(Path.ChangeExtension(path, (i + 1) + "_final.png"));
}
}
}
}
public static void Run(string path)
{
// check shape, see http://www.aforgenet.com/articles/shape_checker/
SimpleShapeChecker shapeChecker = new SimpleShapeChecker()
{
};
float zoom = 20;
var pinkPen = new Pen(Color.HotPink, zoom * 0.4f);
var greenPen = new Pen(Color.GreenYellow, zoom * 0.7f);
var aquaPen = new Pen(Color.Aqua, zoom * 0.7f);
var redPen = new Pen(Color.Red, zoom * 0.4f);
var bluePen = new Pen(Color.Blue, zoom * 0.4f);
var blackPen = new Pen(Color.Black, zoom * 0.7f);
using (var converter = new PdfImageConverter(path))
using (PdfDocument document = PdfDocument.Open(path))
{
for (var i = 0; i < document.NumberOfPages; i++)
{
var page = document.GetPage(i + 1);
var paths = page.ExperimentalAccess.Paths;
using (var bitmap = converter.GetPage(i + 1, zoom))
using (var graphics = Graphics.FromImage(bitmap))
{
var imageHeight = bitmap.Height;
foreach (var letter in page.Letters)
{
var rect = new Rectangle(
(int)(letter.GlyphRectangle.Left * (decimal)zoom),
imageHeight - (int)(letter.GlyphRectangle.Top * (decimal)zoom),
(int)(letter.GlyphRectangle.Width * (decimal)zoom),
(int)(letter.GlyphRectangle.Height * (decimal)zoom));
graphics.DrawRectangle(pinkPen, rect);
}
foreach (var p in paths)
{
if (p == null)
{
continue;
}
var commands = p.Commands;
var points = ToPoints(commands);
//Scatterplot plot = new Scatterplot();
//plot.Compute(points.Select(po => (double)po.X).ToArray(), points.Select(po => (double)po.Y).ToArray());
//ScatterplotBox.Show(plot);
var shape = shapeChecker.CheckShapeType(points);
var subType = shapeChecker.CheckPolygonSubType(points);
var bboxF = GetBoundingRectangle(commands);
if (bboxF.HasValue)
{
var rect = new Rectangle(
(int)(bboxF.Value.Left * (decimal)zoom),
imageHeight - (int)(bboxF.Value.Top * (decimal)zoom),
(int)(bboxF.Value.Width == 0 ? 1 : bboxF.Value.Width * (decimal)zoom),
(int)(bboxF.Value.Height == 0 ? 1 : bboxF.Value.Height * (decimal)zoom));
var pen = shape == ShapeType.Quadrilateral ? greenPen : (shape == ShapeType.Circle ? aquaPen : blackPen);
graphics.DrawRectangle(pen, rect);
}
foreach (var command in commands)
{
if (command is PdfPath.Line line)
{
var bbox = line.GetBoundingRectangle();
if (bbox.HasValue)
{
var rect = new Rectangle(
(int)(bbox.Value.Left * (decimal)zoom),
imageHeight - (int)(bbox.Value.Top * (decimal)zoom),
(int)(bbox.Value.Width == 0 ? 1 : bbox.Value.Width * (decimal)zoom),
(int)(bbox.Value.Height == 0 ? 1 : bbox.Value.Height * (decimal)zoom));
graphics.DrawRectangle(bluePen, rect);
}
}
else if (command is BezierCurve curve)
{
var bbox = curve.GetBoundingRectangle();
if (bbox.HasValue)
{
var rect = new Rectangle(
(int)(bbox.Value.Left * (decimal)zoom),
imageHeight - (int)(bbox.Value.Top * (decimal)zoom),
(int)(bbox.Value.Width == 0 ? 1 : bbox.Value.Width * (decimal)zoom),
(int)(bbox.Value.Height == 0 ? 1 : bbox.Value.Height * (decimal)zoom));
graphics.DrawRectangle(redPen, rect);
}
}
else if (command is Close close)
{
var bbox = close.GetBoundingRectangle();
if (bbox.HasValue)
{
var rect = new Rectangle(
(int)(bbox.Value.Left * (decimal)zoom),
imageHeight - (int)(bbox.Value.Top * (decimal)zoom),
(int)(bbox.Value.Width == 0 ? 1 : bbox.Value.Width * (decimal)zoom),
(int)(bbox.Value.Height == 0 ? 1 : bbox.Value.Height * (decimal)zoom));
graphics.DrawRectangle(greenPen, rect);
}
}
else if (command is Move move)
{
var bbox = move.GetBoundingRectangle();
if (bbox.HasValue)
{
var rect = new Rectangle(
(int)(bbox.Value.Left * (decimal)zoom),
imageHeight - (int)(bbox.Value.Top * (decimal)zoom),
(int)(bbox.Value.Width == 0 ? 1 : bbox.Value.Width * (decimal)zoom),
(int)(bbox.Value.Height == 0 ? 1 : bbox.Value.Height * (decimal)zoom));
graphics.DrawRectangle(greenPen, rect);
}
}
else
{
throw new NotImplementedException(command.GetType().ToString());
}
}
}
var rectsPaths = RecursiveXYCutPath.Instance.GetBlocks(paths, 0, 10, 10);
foreach (var rectPath in rectsPaths)
{
var rect = new Rectangle(
(int)(rectPath.Left * (decimal)zoom),
imageHeight - (int)(rectPath.Top * (decimal)zoom),
(int)(rectPath.Width * (decimal)zoom),
(int)(rectPath.Height * (decimal)zoom));
graphics.DrawRectangle(aquaPen, rect);
}
bitmap.Save(Path.ChangeExtension(path, (i + 1) + "_pathsTest.png"));
}
}
}
}
public static void Run(string path)
{
// check shape, see http://www.aforgenet.com/articles/shape_checker/
SimpleShapeChecker shapeChecker = new SimpleShapeChecker()
{
};
float zoom = 20;
var pinkPen = new Pen(Color.HotPink, zoom * 0.4f);
var greenPen = new Pen(Color.GreenYellow, zoom * 0.7f);
var aquaPen = new Pen(Color.Aqua, zoom * 0.7f);
var redPen = new Pen(Color.Red, zoom * 0.4f);
var bluePen = new Pen(Color.Blue, zoom * 0.4f);
var blackPen = new Pen(Color.Black, zoom * 0.7f);
using (var converter = new PdfImageConverter(path))
using (PdfDocument document = PdfDocument.Open(path))
{
for (var i = 0; i < document.NumberOfPages; i++)
{
var page = document.GetPage(i + 1);
var paths = page.ExperimentalAccess.Paths;
var geometries = paths.Select(p => new PdfGeometry(p)).ToList();
var verticals = geometries.Where(g => g.IsVerticalLine()).ToList();
var horizontals = geometries.Where(g => g.IsHorizontalLine()).ToList();
using (var bitmap = converter.GetPage(i + 1, zoom))
using (var graphics = Graphics.FromImage(bitmap))
{
var imageHeight = bitmap.Height;
foreach (var letter in page.Letters)
{
var rect = new Rectangle(
(int)(letter.GlyphRectangle.Left * (decimal)zoom),
imageHeight - (int)(letter.GlyphRectangle.Top * (decimal)zoom),
(int)(letter.GlyphRectangle.Width * (decimal)zoom),
(int)(letter.GlyphRectangle.Height * (decimal)zoom));
graphics.DrawRectangle(pinkPen, rect);
}
foreach (var p in paths)
{
if (p == null)
{
continue;
}
PdfGeometry geometry = new PdfGeometry(p);
var isClosed = geometry.IsClosed;
var isClockwise = geometry.IsClockwise;
var commands = p.Commands;
var points = ToOrderedPoints(commands);
if (isClosed) //.SubGeometries.Count > 1)
{
//Scatterplot scatterplot = new Scatterplot();
//scatterplot.Compute(
// points.Select(po => (double)po.X).Take(31).ToArray(),
// points.Select(po => (double)po.Y).Take(31).ToArray(),
// Enumerable.Range(0, points.Count).Take(31).ToArray());
//ScatterplotBox.Show(scatterplot);
ScatterplotView view = new ScatterplotView();
view.Dock = System.Windows.Forms.DockStyle.Fill;
view.LinesVisible = true;
view.Graph.GraphPane.Title.Text = isClockwise ? "CW" : "CCW";
foreach (var command in commands)
{
if (command is PdfPath.Line line)
{
view.Graph.GraphPane.GraphObjList.Add(new ZedGraph.ArrowObj(
Color.Blue, 10.0f, (double)line.From.X, (double)line.From.Y,
(double)line.To.X, (double)line.To.Y));
view.Graph.GraphPane.AddCurve("",
new[] { (double)line.From.X, (double)line.To.X },
new[] { (double)line.From.Y, (double)line.To.Y },
Color.Red);
}
else if (command is BezierCurve curve)
{
foreach (var lineB in BezierCurveToPaths(curve))
{
view.Graph.GraphPane.GraphObjList.Add(new ZedGraph.ArrowObj(
Color.Blue, 10.0f, (double)lineB.From.X, (double)lineB.From.Y,
(double)lineB.To.X, (double)lineB.To.Y));
view.Graph.GraphPane.AddCurve("",
new[] { (double)lineB.From.X, (double)lineB.To.X },
new[] { (double)lineB.From.Y, (double)lineB.To.Y },
Color.Red);
}
}
}
//view.Graph.GraphPane.AddCurve("curve",
// points.Select(po => (double)po.X).ToArray(),
// points.Select(po => (double)po.Y).ToArray(),
// Color.Blue,
// ZedGraph.SymbolType.Circle);
view.Graph.GraphPane.AxisChange();
var f1 = new System.Windows.Forms.Form();
f1.Width = 1000;
f1.Height = 1000;
f1.Controls.Add(view);
f1.ShowDialog();
}
var shape = shapeChecker.CheckShapeType(points);
var subType = shapeChecker.CheckPolygonSubType(points);
var bboxF = GetBoundingRectangle(commands);
if (bboxF.HasValue)
{
var rect = new Rectangle(
(int)(bboxF.Value.Left * (decimal)zoom),
imageHeight - (int)(bboxF.Value.Top * (decimal)zoom),
(int)(bboxF.Value.Width == 0 ? 1 : bboxF.Value.Width * (decimal)zoom),
(int)(bboxF.Value.Height == 0 ? 1 : bboxF.Value.Height * (decimal)zoom));
graphics.DrawRectangle(greenPen, rect);
}
/*foreach (var command in commands)
* {
* if (command is PdfPath.Line line)
* {
* var bbox = line.GetBoundingRectangle();
* if (bbox.HasValue)
* {
* var rect = new Rectangle(
* (int)(bbox.Value.Left * (decimal)zoom),
* imageHeight - (int)(bbox.Value.Top * (decimal)zoom),
* (int)(bbox.Value.Width == 0 ? 1 : bbox.Value.Width * (decimal)zoom),
* (int)(bbox.Value.Height == 0 ? 1 : bbox.Value.Height * (decimal)zoom));
* graphics.DrawRectangle(bluePen, rect);
* }
* }
* else if (command is BezierCurve curve)
* {
* var bbox = curve.GetBoundingRectangle();
* if (bbox.HasValue)
* {
* var rect = new Rectangle(
* (int)(bbox.Value.Left * (decimal)zoom),
* imageHeight - (int)(bbox.Value.Top * (decimal)zoom),
* (int)(bbox.Value.Width == 0 ? 1 : bbox.Value.Width * (decimal)zoom),
* (int)(bbox.Value.Height == 0 ? 1 : bbox.Value.Height * (decimal)zoom));
* graphics.DrawRectangle(redPen, rect);
* }
* }
* else if (command is Close close)
* {
* var bbox = close.GetBoundingRectangle();
* if (bbox.HasValue)
* {
* var rect = new Rectangle(
* (int)(bbox.Value.Left * (decimal)zoom),
* imageHeight - (int)(bbox.Value.Top * (decimal)zoom),
* (int)(bbox.Value.Width == 0 ? 1 : bbox.Value.Width * (decimal)zoom),
* (int)(bbox.Value.Height == 0 ? 1 : bbox.Value.Height * (decimal)zoom));
* graphics.DrawRectangle(greenPen, rect);
* }
* }
* else if (command is Move move)
* {
* var bbox = move.GetBoundingRectangle();
* if (bbox.HasValue)
* {
* var rect = new Rectangle(
* (int)(bbox.Value.Left * (decimal)zoom),
* imageHeight - (int)(bbox.Value.Top * (decimal)zoom),
* (int)(bbox.Value.Width == 0 ? 1 : bbox.Value.Width * (decimal)zoom),
* (int)(bbox.Value.Height == 0 ? 1 : bbox.Value.Height * (decimal)zoom));
* graphics.DrawRectangle(greenPen, rect);
* }
* }
* else
* {
* throw new NotImplementedException(command.GetType().ToString());
* }
* }*/
}
var rectsPaths = RecursiveXYCutPath.Instance.GetBlocks(paths, 0, 10, 10);
foreach (var rectPath in rectsPaths)
{
var rect = new Rectangle(
(int)(rectPath.Left * (decimal)zoom),
imageHeight - (int)(rectPath.Top * (decimal)zoom),
(int)(rectPath.Width * (decimal)zoom),
(int)(rectPath.Height * (decimal)zoom));
graphics.DrawRectangle(aquaPen, rect);
}
bitmap.Save(Path.ChangeExtension(path, (i + 1) + "_pathsTest.png"));
}
}
}
}
