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Recognize(int,int,OcrProgressCallback) Method

Summary

Recognizes the OCR data found on a range of pages in the OCR document.

Syntax

C#
VB
Java
Objective-C
C++
public void Recognize( 
   int firstPageIndex, 
   int lastPageIndex, 
   OcrProgressCallback callback 
) 

Overloads Sub Recognize( _ 
   ByVal firstPageIndex As Integer, _ 
   ByVal lastPageIndex As Integer, _ 
   ByVal callback As OcrProgressCallback _ 
)  

- (BOOL)recognizePagesInRange:(NSRange)range 
                     progress:(nullable LTOcrProgressHandler)progressHandler 
                        error:(NSError **)error 

public void recognize(int firstPageIndex, 
                      int lastPageIndex, 
                      OcrProgressListener callback) 

Parameters

firstPageIndex
The zero-based index of the first page to recognize.

lastPageIndex
The zero-based index of the last page to recognize. A value of -1 means recognize up to and including the last page in the OCR document.

callback
Optional callback to show operation progress.

Remarks

For more information on recognition of OCR data a page, refer to IOcrPage.Recognize.

This method will iterate through all the pages between firstPageIndex and lastPageIndex in the OCR document and run IOcrPage.Recognize on each page.

To recognize all the pages in the OCR document use Recognize(OcrProgressCallback callback).

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

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.

Example

For an example, refer to IOcrPageCollection.

Requirements

Target Platforms

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