Convert Pdf To searchable PDF with ImageOverText=True

It's possible to convert an raster pdf to searchable pdf maintaining the original format using leadtools v19 demo on .NET (similar to PdfDocumentOptions: ImageOverText=True)?

I'm using this code but original image is not perserved:
IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Advantage, false);
ocrEngine.Startup(null, null, null, null);
ocrEngine.AutoRecognizeManager.Run("input.pdf", "output.pdf", DocumentFormat.Pdf, null, null);


Thanks in advance

You need to set the ImageOverText property of the DocumentWriter's PDFDocumentOptions to true prior to the AutoRecognizeManager.Run method like so:

         IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Advantage, false);
         ocrEngine.Startup(null, null, null, null);

         PdfDocumentOptions pdfOptions = ocrEngine.DocumentWriterInstance.GetOptions(DocumentFormat.Pdf) as PdfDocumentOptions;
         pdfOptions.ImageOverText = true;
         ocrEngine.DocumentWriterInstance.SetOptions(DocumentFormat.Pdf, pdfOptions);

         ocrEngine.AutoRecognizeManager.Run("input.pdf", "output.pdf", DocumentFormat.Pdf, null, null);

Here is some more information on the PDF Document Options and the Image Over Text Mode:
https://www.leadtools.com/help/leadtools/v19/dh/ft/leadtools.forms.documentwriters~leadtools.forms.documentwriters.pdfdocumentoptions.html
https://www.leadtools.com/help/leadtools/v19/dh/ft/leadtools.forms.documentwriters~leadtools.forms.documentwriters.pdfdocumentoptions~imageovertextmode.html

Also, there is a How To post about the various PDF Options that you can modify/change at this forum post:
http://support.leadtools.com/SupportPortal/CS/forums/44485/ShowPost.aspx

Please let me know if you have any further questions!