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BitmapPreparationForm.cs
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BitmapPreparationForm.cs
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//********************************************************************************************
//Author: Sergey Stoyan
// sergey.stoyan@gmail.com
// http://www.cliversoft.com
//********************************************************************************************
using System;
using System.Windows.Forms;
using System.Text.RegularExpressions;
using System.Linq;
using System.Collections.Generic;
namespace Cliver.PdfDocumentParser
{
public partial class BitmapPreparationForm : Form
{
public BitmapPreparationForm(TemplateForm templateForm)
{
InitializeComponent();
FormClosing += delegate (object sender, FormClosingEventArgs e)
{
e.Cancel = true;
this.Visible = false;
};
this.Icon = Win.AssemblyRoutines.GetAppIcon();
//defaultBitmapPreprocessorClassDefinitions.Items =
this.templateForm = templateForm;
Template template = null;
Activated += delegate
{
template = templateForm.GetTemplateFromUI(false);
SetUI(template, true);
};
TesseractPageSegMode.Items.AddRange(new object[] {
Tesseract.PageSegMode.Auto,
Tesseract.PageSegMode.AutoOnly,
Tesseract.PageSegMode.AutoOsd,
Tesseract.PageSegMode.CircleWord,
Tesseract.PageSegMode.Count,
Tesseract.PageSegMode.OsdOnly,
Tesseract.PageSegMode.RawLine,
Tesseract.PageSegMode.SingleBlock,
Tesseract.PageSegMode.SingleBlockVertText,
Tesseract.PageSegMode.SingleChar,
Tesseract.PageSegMode.SingleColumn,
Tesseract.PageSegMode.SingleLine,
Tesseract.PageSegMode.SingleWord,
Tesseract.PageSegMode.SparseText,
Tesseract.PageSegMode.SparseTextOsd
});
PageRotation.SelectedIndexChanged += delegate { changed = true; };
Deskew.CheckedChanged += delegate { changed = true; };
DeskewBlockMaxHeight.ValueChanged += delegate { changed = true; };
DeskewBlockMinSpan.ValueChanged += delegate { changed = true; };
ScalingAnchor.SelectedIndexChanged += delegate { changed = true; };
CvImageScalePyramidStep.ValueChanged += delegate { changed = true; };
bitmapPreprocessorClassDefinition.TextChanged += delegate { changed = true; };
TesseractPageSegMode.SelectedIndexChanged += delegate { changed = true; };
PreprocessBitmap.CheckedChanged += delegate
{
bitmapPreprocessorClassDefinition.Enabled = PreprocessBitmap.Checked;
if (bitmapPreprocessorClassDefinition.Enabled && string.IsNullOrWhiteSpace(bitmapPreprocessorClassDefinition.Text))
{
string className = Regex.Replace(template.Name, @"[\W]", "_");
bitmapPreprocessorClassDefinition.Text = Regex.Replace(defaultBitmapPreprocessor, @"Default_BitmapPreprocessor", className + "_BitmapPreprocessor", RegexOptions.Singleline);
}
};
}
TemplateForm templateForm;
bool changed = false;
//public class DefaultBitmapPreprocessorClassDefinitionItem
//{
// public string Value { set; get; }
// public string Value { set; get; }
//}
internal void SetUI(Template t, bool updateSharedValuesOnly)
{
Text = "Bitmap preparation for '" + t.Name + "'";
if (!updateSharedValuesOnly)
{
PageRotation.SelectedIndex = (int)t.PageRotation;
Deskew.Checked = t.Deskew;
DeskewBlockMaxHeight.Value = t.DeskewBlockMaxHeight;
DeskewBlockMinSpan.Value = t.DeskewBlockMinSpan;
CvImageScalePyramidStep.Value = t.CvImageScalePyramidStep;
bitmapPreprocessorClassDefinition.Text = t.BitmapPreprocessorClassDefinition;
bitmapPreprocessorClassDefinition.Enabled = PreprocessBitmap.Checked = t.PreprocessBitmap;
TesseractPageSegMode.SelectedItem = t.TesseractPageSegMode;
changed = false;
}
if (!changed && t.ScalingAnchorId != ScalingAnchor.SelectedItem as int?)
changed = true;
ScalingAnchor.Items.Clear();
ScalingAnchor.Items.Add("");
ScalingAnchor.Items.AddRange(t.Anchors.Where(a => a is Template.Anchor.CvImage).Select(a => (object)a.Id).ToArray());
ScalingAnchor.SelectedItem = t.GetScalingAnchor()?.Id;
}
string defaultBitmapPreprocessor = @"using System;
using System.Drawing;
using Emgu.CV;
using Emgu.CV.CvEnum;
using Emgu.CV.Structure;
namespace Cliver.PdfDocumentParser
{
public class Default_BitmapPreprocessor : BitmapPreprocessor
{
public override Bitmap GetProcessed(Bitmap bitmap)
{
return bitmap;
using (bitmap)
{
Image<Gray, byte> image = bitmap.ToImage<Gray, byte>();
//Emgu.CV.CvInvoke.Blur(image, image, new Size(3, 3), new Point(0, 0));
//image = image.ThresholdAdaptive(new Gray(255), AdaptiveThresholdType.GaussianC, ThresholdType.Binary, 7, new Gray(0.03));
// Emgu.CV.CvInvoke.AdaptiveThreshold(image, image,, 125, 255, ThresholdType.Otsu | ThresholdType.Binary)new Gray(255), Emgu.CV.CvEnum.ADAPTIVE_THRESHOLD_TYPE.ADAPTIVE_THRESH_GAUSSIAN_C, Emgu.CV.CvEnum.THRESH.CV_THRESH_BINARY , windowSize, new Gray(0.03));
//Emgu.CV.CvInvoke.Threshold(image, image, 125, 255, ThresholdType.Otsu | ThresholdType.Binary);
//Emgu.CV.CvInvoke.Erode(image, image, null, new Point(-1, -1), 1, BorderType.Constant, CvInvoke.MorphologyDefaultBorderValue);
//CvInvoke.Dilate(image, image, null, new Point(-1, -1), 1, BorderType.Constant, CvInvoke.MorphologyDefaultBorderValue);
return image.ToBitmap();
}
}
}
}";
internal void SetTemplate(Template t)
{
if (changed)
validate();
t.PageRotation = (Template.PageRotations)PageRotation.SelectedIndex;
t.Deskew = Deskew.Checked;
t.DeskewBlockMaxHeight = (int)DeskewBlockMaxHeight.Value;
t.DeskewBlockMinSpan = (int)DeskewBlockMinSpan.Value;
t.ScalingAnchorId = ScalingAnchor.SelectedItem is int ? (int)ScalingAnchor.SelectedItem : -1;
t.CvImageScalePyramidStep = (int)CvImageScalePyramidStep.Value;
t.BitmapPreprocessorClassDefinition = bitmapPreprocessorClassDefinition.Text;
t.PreprocessBitmap = PreprocessBitmap.Checked;
t.TesseractPageSegMode = (Tesseract.PageSegMode)TesseractPageSegMode.SelectedItem;
}
void validate()
{
if (PreprocessBitmap.Checked)
{
bitmapPreprocessorClassDefinition.Document.MarkerStrategy.RemoveAll(marker => true);
try
{
BitmapPreprocessor.GetCompiledBitmapPreprocessorType(bitmapPreprocessorClassDefinition.Text);//checking
}
catch (BitmapPreprocessor.CompilationException ex)
{
foreach (BitmapPreprocessor.CompilationError ce in ex.Data.Values)
{
ICSharpCode.TextEditor.Document.TextMarker tm = new ICSharpCode.TextEditor.Document.TextMarker(ce.P1, ce.P2 - ce.P1, ICSharpCode.TextEditor.Document.TextMarkerType.WaveLine, System.Drawing.Color.Red);
tm.ToolTip = ce.Message;
bitmapPreprocessorClassDefinition.Document.MarkerStrategy.AddMarker(tm);
}
throw ex;
}
}
}
private bool applyTemplate()
{
try
{
if (changed)
{
validate();
changed = false;
templateForm.ReloadPageBitmaps();
}
return true;
}
catch (Exception ex)
{
Message.Error2(ex, this);
return false;
}
}
private void bCancel_Click(object sender, EventArgs e)
{
Close();
}
private void bApply_Click(object sender, EventArgs e)
{
applyTemplate();
Close();
}
private void bSaveDafault_Click(object sender, EventArgs e)
{
}
private void bRemove_Click(object sender, EventArgs e)
{
}
private void defaults_SelectedIndexChanged(object sender, EventArgs e)
{
}
}
}