Saves a GdPicture image as single page searchable PDF and performs an OCR recognition. 

The recognized text is written invisibly to the PDF in order to simplify indexing and search. 

For each language of recognition, you have to deploy specific files. See the Dictionary parameter.

public String SaveAsPDFOCR(
    int ImageID, 
    String FilePath, 
    TesseractDictionary Dictionary, 
    String DictionaryPath, 
    String CharWhiteList, 
    Boolean PDFA, 
    String Title, 
    String Author, 
    String Subject, 
    String Keywords, 
    String Creator
);

Public Function SaveAsPDFOCR(
    ByVal ImageID As Integer, 
    ByVal FilePath As String, 
    ByVal Dictionary As TesseractDictionary, 
    ByVal DictionaryPath As String, 
    ByVal CharWhiteList As String, 
    ByVal PDFA As Boolean, 
    ByVal Title As String, 
    ByVal Author As String, 
    ByVal Subject As String, 
    ByVal Keywords As String, 
    ByVal Creator As String
) As String

The recognized text.