public double DoubleMinimumValue { get; }
The minimum allowed value for the double setting.
You should not pass a value less than DoubleMinimumValue when setting the value of the double setting.
If the double setting has no minimum value, DoubleMinimumValue will be set to Double.MinValue.
This member is only valid if ValueType is OcrSettingValueType.Double.
For a list of supported engine-specific settings and their meanings, refer to OCR engine-specific Settings.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Ocr;
using Leadtools.Document.Writer;
public void OcrSettingManagerExample()
{
// Create an instance of the engine
using (IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD))
{
// Start the engine using default parameters
ocrEngine.Startup(null, null, null, LEAD_VARS.OcrLEADRuntimeDir);
IOcrSettingManager settingManager = ocrEngine.SettingManager;
// Dump all the settings supported by this engine to a text file on disk
DumpAllSettings(settingManager);
// Image file to OCR
string tifFileName = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif");
// File formats to save
DocumentFormat[] formats = { DocumentFormat.Text, DocumentFormat.Pdf };
foreach (DocumentFormat format in formats)
{
// Generate the output file name
string outFileName = Path.ChangeExtension(tifFileName, DocumentWriter.GetFormatFileExtension(format));
Console.WriteLine("Format: {0}\nOutput file: {1}", format, outFileName);
int detectFontStyles = 0;
bool recognizeFontAttributes = false;
if (format == DocumentFormat.Text)
{
// 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);
}
// 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 (IOcrDocument ocrDocument = ocrEngine.DocumentManager.CreateDocument())
{
// Add a page to the document
IOcrPage ocrPage = ocrDocument.Pages.AddPage(tifFileName, null);
// 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(null);
// Save the document we have as PDF
ocrDocument.Save(outFileName, format, null);
}
// Re-set the original settings
if (format == DocumentFormat.Text)
{
Console.WriteLine("Resetting original settings");
settingManager.SetEnumValue("Recognition.Fonts.DetectFontStyles", detectFontStyles);
settingManager.SetBooleanValue("Recognition.Fonts.RecognizeFontAttributes", recognizeFontAttributes);
}
}
// Shutdown the engine
// Note: calling Dispose will also automatically shutdown the engine if it has been started
ocrEngine.Shutdown();
}
}
private static void DumpAllSettings(IOcrSettingManager settingManager)
{
// Write all the settings into a disk file
string settingsFileName = Path.Combine(LEAD_VARS.ImagesDir, "Settings.txt");
using (StreamWriter writer = File.CreateText(settingsFileName))
{
writer.WriteLine("Settings");
string[] settingNames = settingManager.GetSettingNames();
foreach (string settingName in settingNames)
{
IOcrSettingDescriptor sd = settingManager.GetSettingDescriptor(settingName);
writer.WriteLine(" Name: {0}", sd.Name);
writer.WriteLine(" ValueType: {0}", sd.ValueType);
writer.WriteLine(" FriendlyName: {0}", sd.FriendlyName);
switch (sd.ValueType)
{
case OcrSettingValueType.BeginCategory:
writer.WriteLine("-------------------------------------");
break;
case OcrSettingValueType.Integer:
writer.WriteLine(" Units: {0}", sd.Units);
writer.WriteLine(" IntegerMinimumValue: {0}", sd.IntegerMinimumValue);
writer.WriteLine(" IntegerMaximumValue: {0}", sd.IntegerMaximumValue);
break;
case OcrSettingValueType.Enum:
writer.WriteLine(" EnumIsFlags: {0}", sd.EnumIsFlags);
writer.WriteLine(" EnumMemberFriendlyNames");
{
int[] values = sd.GetEnumMemberValues();
string[] names = sd.GetEnumMemberFriendlyNames();
for (int i = 0; i < values.Length; i++)
{
writer.WriteLine(" {0} : {1}", names[i], values[i]);
}
}
break;
case OcrSettingValueType.Double:
writer.WriteLine(" Units: {0}", sd.Units);
writer.WriteLine(" DoubleMinimumValue: {0}", sd.DoubleMinimumValue);
writer.WriteLine(" DoubleMaximumValue: {0}", sd.DoubleMaximumValue);
break;
case OcrSettingValueType.Boolean:
break;
case OcrSettingValueType.Character:
break;
case OcrSettingValueType.String:
writer.WriteLine(" StringMaximumLength: {0}", sd.StringMaximumLength);
writer.WriteLine(" StringNullAllowed: {0}", sd.StringNullAllowed);
break;
case OcrSettingValueType.Rectangle:
break;
case OcrSettingValueType.EndCategory:
break;
default:
break;
}
}
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images";
public const string OcrLEADRuntimeDir = @"C:\LEADTOOLS23\Bin\Common\OcrLEADRuntime";
}