InsertPages(Int32,Stream,Int32,Int32,OcrProgressCallback) Method

void InsertPages( 
   int pageIndex,
   Stream stream,
   int imageFirstPageNumber,
   int imageLastPageNumber,
   OcrProgressCallback callback
)

'Declaration
 

Overloads Sub InsertPages( _
   ByVal pageIndex As Integer, _
   ByVal stream As Stream, _
   ByVal imageFirstPageNumber As Integer, _
   ByVal imageLastPageNumber As Integer, _
   ByVal callback As OcrProgressCallback _
) 

'Usage
 

Dim instance As IOcrPageCollection
Dim pageIndex As Integer
Dim stream As Stream
Dim imageFirstPageNumber As Integer
Dim imageLastPageNumber As Integer
Dim callback As OcrProgressCallback
 
instance.InsertPages(pageIndex, stream, imageFirstPageNumber, imageLastPageNumber, callback)

void InsertPages( 
   int pageIndex,
   Stream stream,
   int imageFirstPageNumber,
   int imageLastPageNumber,
   OcrProgressCallback callback
)

- (BOOL)insertPagesAtIndex:(NSUInteger)pageIndex
                    stream:(LTLeadStream *)stream
                   inRange:(NSRange)range
                     error:(NSError **)error
            

public void insertPages(int pageIndex,
                        ILeadStream stream,
                        int imageFirstPageNumber,
                        int imageLastPageNumber,
                        OcrProgressListener callback)
            

function Leadtools.Forms.Ocr.IOcrPageCollection.InsertPages(Int32,Stream,Int32,Int32,OcrProgressCallback)( 
   pageIndex ,
   stream ,
   imageFirstPageNumber ,
   imageLastPageNumber ,
   callback 
)

void InsertPages( 
   int pageIndex,
   Stream^ stream,
   int imageFirstPageNumber,
   int imageLastPageNumber,
   OcrProgressCallback^ callback
) 

Parameters

pageIndex

The zero-based index at which the new pages from stream should be inserted.

stream

The .NET stream containing the multi-page image file.

imageFirstPageNumber

1-based index of the first page in stream to insert.

imageLastPageNumber

1-based index of the last page in stream to insert. A value of -1 means insert up to and including the last page in stream.

callback

Optional callback to show operation progress.

A short-cut to insert all the pages of an image file stored in a stream to the OCR document is InsertPages(index, stream, 1, -1, callback).

To insert a single page from a multi-page image stored in a stream, you can also use AddPage(int pageIndex, Stream stream, OcrProgressCallback callback).

The image file in stream can be any of the file formats supported by LEADTOOLS. For more information, refer to Summary of All Supported Image File Formats.

You can use the OcrProgressCallback to show the operation progress or to abort it. For more information and an example, refer to OcrProgressCallback.

The LEADTOOLS OCR engine supports pages of dots per inch (DPI) values of 150 and greater. If you try to add a page with a DPI of less than 150 then the engine might be able to recognize any data from this page.

Note: The value of the "Recognition.ShareOriginalImage" (only supported by the Advantage OCR engine) setting is not used when calling this method. The engine loads the image(s) and sets them in the pages internally. The original image reference can be obtained from the page using IOcrPage.GetRasterImage(OcrPageType.Original). Sharing the original image minimizes the memory used during OCR operations.

This member only works with memory-based documents and will throw an exception otherwise. For more information, refer to IOcrDocumentManager.CreateDocument and Programming with the LEADTOOLS .NET OCR.

Target Platforms

Reference

IOcrPageCollection Interface
IOcrPageCollection Members
Overload List
OcrEngineManager Class
OcrEngineType Enumeration
IOcrPage Interface
Programming with the LEADTOOLS .NET OCR
Summary of All Supported Image File Formats