IOcrSettingManager Interface

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Forms.Ocr 
Imports Leadtools.Forms.DocumentWriters 
 
Public Sub OcrSettingManagerExample() 
   ' Create an instance of the engine 
   Using ocrEngine As IOcrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Advantage, False) 
      ' Start the engine using default parameters 
      ocrEngine.Startup(Nothing, Nothing, Nothing, LEAD_VARS.OcrAdvantageRuntimeDir) 
 
      Dim settingManager As IOcrSettingManager = ocrEngine.SettingManager 
 
      ' Dump all the settings supported by this engine to a text file on disk 
      DumpAllSettings(settingManager) 
 
      ' Image file to OCR 
      Dim tifFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif") 
 
      ' File formats to save 
      Dim formats As DocumentFormat() = {DocumentFormat.Text, DocumentFormat.Pdf} 
 
      For Each format As DocumentFormat In formats 
         ' Generate the output file name 
         Dim outFileName As String = Path.ChangeExtension(tifFileName, DocumentWriter.GetFormatFileExtension(format)) 
 
         Console.WriteLine("Format: {0}" & vbLf & "Output file: {1}", format, outFileName) 
 
         Dim detectFontStyles As Integer = 0 
         Dim recognizeFontAttributes As Boolean = False 
 
         If format = DocumentFormat.Text Then 
            ' This is 'text' format, we dont need to recognize fonts attributes such as bold and italic 
            ' This will make the recognition process faster 
 
            Console.WriteLine("Turning off font attributes") 
 
            ' Save the old settings 
            detectFontStyles = settingManager.GetEnumValue("Recognition.Fonts.DetectFontStyles") 
            recognizeFontAttributes = settingManager.GetBooleanValue("Recognition.Fonts.RecognizeFontAttributes") 
 
            ' Turn them off now 
            settingManager.SetEnumValue("Recognition.Fonts.DetectFontStyles", "None") 
            settingManager.SetBooleanValue("Recognition.Fonts.RecognizeFontAttributes", False) 
         End If 
 
         ' Show the settings we are using 
         Console.WriteLine("Recognizing using these font attributes settings:") 
         Console.WriteLine("Recognition.Fonts.DetectFontStyles: {0}", 
                           settingManager.GetEnumValueAsString("Recognition.Fonts.DetectFontStyles")) 
         Console.WriteLine("Recognition.Fonts.RecognizeFontAttributes: {0}", 
                           settingManager.GetBooleanValue("Recognition.Fonts.RecognizeFontAttributes")) 
 
 
         ' Recognize and save the file to the output format 
         Using ocrDocument As IOcrDocument = ocrEngine.DocumentManager.CreateDocument() 
            ' Add a page to the document 
            Dim ocrPage As IOcrPage = ocrDocument.Pages.AddPage(tifFileName, Nothing) 
 
            ' Recognize the page 
            ' Note, Recognize can be called without calling AutoZone or manually adding zones. The engine will 
            ' check and automatically auto-zones the page 
            ocrPage.Recognize(Nothing) 
 
            ' Save the document we have as PDF 
            ocrDocument.Save(outFileName, format, Nothing) 
         End Using 
 
         ' Re-set the original settings 
         If format = DocumentFormat.Text Then 
            Console.WriteLine("Resetting original settings") 
            settingManager.SetEnumValue("Recognition.Fonts.DetectFontStyles", detectFontStyles) 
            settingManager.SetBooleanValue("Recognition.Fonts.RecognizeFontAttributes", recognizeFontAttributes) 
         End If 
      Next 
 
      ' Shutdown the engine 
      ' Note: calling Dispose will also automatically shutdown the engine if it has been started 
      ocrEngine.Shutdown() 
   End Using 
End Sub 
 
Private Shared Sub DumpAllSettings(settingManager As IOcrSettingManager) 
   ' Write all the settings into a disk file 
   Dim settingsFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Settings.txt") 
   Using writer As StreamWriter = File.CreateText(settingsFileName) 
      writer.WriteLine("Settings") 
      Dim settingNames As String() = settingManager.GetSettingNames() 
 
      For Each settingName As String In settingNames 
         Dim sd As IOcrSettingDescriptor = settingManager.GetSettingDescriptor(settingName) 
 
         writer.WriteLine("  Name:           {0}", sd.Name) 
         writer.WriteLine("  ValueType:      {0}", sd.ValueType) 
         writer.WriteLine("  FriendlyName:   {0}", sd.FriendlyName) 
 
         Select Case sd.ValueType 
            Case OcrSettingValueType.BeginCategory 
               writer.WriteLine("-------------------------------------") 
               Exit Select 
 
            Case OcrSettingValueType.[Integer] 
               writer.WriteLine("    Units: {0}", sd.Units) 
               writer.WriteLine("    IntegerMinimumValue: {0}", sd.IntegerMinimumValue) 
               writer.WriteLine("    IntegerMaximumValue: {0}", sd.IntegerMaximumValue) 
               Exit Select 
 
            Case OcrSettingValueType.[Enum] 
               writer.WriteLine("    EnumIsFlags: {0}", sd.EnumIsFlags) 
               writer.WriteLine("    EnumMemberFriendlyNames") 
               If True Then 
                  Dim values As Integer() = sd.GetEnumMemberValues() 
                  Dim names As String() = sd.GetEnumMemberFriendlyNames() 
                  For i As Integer = 0 To values.Length - 1 
                     writer.WriteLine("      {0} : {1}", names(i), values(i)) 
                  Next 
               End If 
               Exit Select 
 
            Case OcrSettingValueType.[Double] 
               writer.WriteLine("    Units: {0}", sd.Units) 
               writer.WriteLine("    DoubleMinimumValue: {0}", sd.DoubleMinimumValue) 
               writer.WriteLine("    DoubleMaximumValue: {0}", sd.DoubleMaximumValue) 
               Exit Select 
 
            Case OcrSettingValueType.[Boolean] 
               Exit Select 
 
            Case OcrSettingValueType.Character 
               Exit Select 
 
            Case OcrSettingValueType.[String] 
               writer.WriteLine("    StringMaximumLength:   {0}", sd.StringMaximumLength) 
               writer.WriteLine("    StringNullAllowed:     {0}", sd.StringNullAllowed) 
               Exit Select 
 
            Case OcrSettingValueType.Rectangle 
               Exit Select 
 
            Case OcrSettingValueType.EndCategory 
               Exit Select 
            Case Else 
 
               Exit Select 
         End Select 
      Next 
   End Using 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
   Public Const OcrAdvantageRuntimeDir As String = "C:\LEADTOOLS 19\Bin\Common\OcrAdvantageRuntime" 
End Class