private void DoRecognize(IOcrEngine ocrEngine, string outputFileName)
{
// Set the output format options
DocumentFormat docFormat;
switch (_format)
{
case MyDocumentFormat.DOC:
docFormat = DocumentFormat.Doc;
break;
case MyDocumentFormat.DOCX:
docFormat = DocumentFormat.Docx;
break;
case MyDocumentFormat.TEXT:
docFormat = DocumentFormat.Text;
break;
case MyDocumentFormat.PDFImageOverText:
case MyDocumentFormat.PDF:
default:
docFormat = DocumentFormat.Pdf;
if (_format == MyDocumentFormat.PDFImageOverText)
{
PdfDocumentOptions pdfOptions = ocrEngine.DocumentWriterInstance.GetOptions(docFormat) as PdfDocumentOptions;
pdfOptions.ImageOverText = true;
ocrEngine.DocumentWriterInstance.SetOptions(docFormat, pdfOptions);
}
break;
}
IOcrAutoRecognizeManager autoRecognizeManager = ocrEngine.AutoRecognizeManager;
autoRecognizeManager.Run(
_imageDocumentFileName,
outputFileName,
docFormat,
null,
null);
}
static int Main(string[] args)
{
Messager.Caption = "C# OCR Auto Recognize Demo";
#if LEADTOOLS_V175_OR_LATER
if (!Support.SetLicense())
{
return(-1);
}
#else
Leadtools.Demos.Support.Unlock(false);
#endif // #if LEADTOOLS_V175_OR_LATER
_handler += new EventHandler(Handler);
SetConsoleCtrlHandler(_handler, true);
// Trace to the console
Trace.Listeners.Add(new TextWriterTraceListener(Console.Out));
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
JobData jobData = new JobData();
RasterCodecs _rasterCodecs = new RasterCodecs();
#if !LEADTOOLS_V175_OR_LATER
_rasterCodecs.Options.RasterizeDocument.Load.Enabled = true;
#endif
_rasterCodecs.Options.Pdf.Load.DisplayDepth = 24;
#if LEADTOOLS_V16_OR_LATER
// Use the new RasterizeDocumentOptions to default loading document files at 300 DPI
_rasterCodecs.Options.RasterizeDocument.Load.XResolution = 300;
_rasterCodecs.Options.RasterizeDocument.Load.YResolution = 300;
_rasterCodecs.Options.Pdf.Load.EnableInterpolate = true;
_rasterCodecs.Options.Load.AutoFixImageResolution = true;
#endif // #if LEADTOOLS_V16_OR_LATER
bool unexpectedShutdown = false;
try
{
do
{
// Get the demo job data
JobForm form = new JobForm(_rasterCodecs);
form.JobData = jobData;
if (form.ShowDialog() != DialogResult.OK)
{
Console.WriteLine("Exiting");
return(0);
}
bool deleteExistingFile = File.Exists(form.JobData.DocumentFileName);
if (deleteExistingFile && form.JobData.Format == DocumentFormat.Ltd)
{
// This is an LTD file that already exists, so ask the user what to do here, delete or append to it
var message = string.Format("Delete the existing output file '{0}' first?{1}The file already exists. Select 'Yes' to delete it and create a new one or 'No' to append this result to it.",
form.JobData.DocumentFileName, Environment.NewLine);
switch (Messager.ShowQuestion(null, message, MessageBoxButtons.YesNoCancel))
{
case DialogResult.Yes:
deleteExistingFile = true;
break;
case DialogResult.No:
deleteExistingFile = false;
break;
default:
continue;
}
}
// Delete the output file first
if (deleteExistingFile)
{
File.Delete(form.JobData.DocumentFileName);
}
// Now run
IOcrAutoRecognizeManager ocrAutoRecognizeManager = jobData.OcrEngine.AutoRecognizeManager;
ocrAutoRecognizeManager.EnableTrace = jobData.EnableTrace;
ocrAutoRecognizeManager.MaximumThreadsPerJob = jobData.MaximumThreadsPerJob;
ocrAutoRecognizeManager.MaximumPagesBeforeLtd = jobData.MaximumPagesBeforeLtd;
ocrAutoRecognizeManager.JobErrorMode = jobData.JobErrorMode;
ocrAutoRecognizeManager.PreprocessPageCommands.Clear();
foreach (OcrAutoPreprocessPageCommand command in jobData.PreprocessPageCommands)
{
ocrAutoRecognizeManager.PreprocessPageCommands.Add(command);
}
Console.WriteLine("Running job...");
Stopwatch watch = new Stopwatch();
watch.Start();
// get an OCR job
OcrAutoRecognizeJobData ocrJobData = new OcrAutoRecognizeJobData(
jobData.ImageFileName,
jobData.FirstPageNumber,
jobData.LastPageNumber,
jobData.ZonesFileName,
jobData.Format,
jobData.DocumentFileName);
ocrJobData.JobName = "MyJob";
IOcrAutoRecognizeJob ocrJob = ocrAutoRecognizeManager.CreateJob(ocrJobData);
try
{
ocrAutoRecognizeManager.RunJob(ocrJob);
}
catch (Exception)
{
}
watch.Stop();
Console.WriteLine("----------------------------");
if (ocrJob.Errors.Count > 0)
{
Console.WriteLine("Errors found:");
foreach (OcrAutoRecognizeManagerJobError error in ocrJob.Errors)
{
Console.WriteLine("Page: {0} - Operation: {1} - Error: {2}", error.ImagePageNumber, error.Operation, error.Exception);
}
}
Console.WriteLine("Total conversion time: " + watch.Elapsed.ToString());
Console.WriteLine("----------------------------");
if (jobData.ViewFinalDocument && jobData.Format != DocumentFormat.Ltd)
{
try
{
System.Diagnostics.Process.Start(jobData.DocumentFileName);
}
catch (Exception ex)
{
Messager.ShowError(null, ex);
}
}
}while(true);
}
catch (OcrException ex)
{
unexpectedShutdown = true;
Console.WriteLine("OCR error code: {0}\n{1}", ex.Code, ex.Message);
return(1);
}
catch (RasterException ex)
{
unexpectedShutdown = true;
Console.WriteLine("LEADTOOLS error code: {0}\n{1}", ex.Code, ex.Message);
return(1);
}
catch (Exception ex)
{
unexpectedShutdown = true;
Console.WriteLine("Error: " + ex.Message);
return(1);
}
finally
{
_handler -= new EventHandler(Handler);
if (jobData.OcrEngine != null)
{
// Dispose the OCR engine (this will call Shutdown as well)
jobData.OcrEngine.Dispose();
jobData.OcrEngine = null;
}
if (_rasterCodecs != null)
{
_rasterCodecs.Dispose();
_rasterCodecs = null;
}
if (unexpectedShutdown)
{
Console.WriteLine("Hit Enter...");
while (Console.ReadKey(true).Key != ConsoleKey.Enter)
{
}
}
}
}
