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NativeAutoZone Method

Summary

Performs auto decomposition of a range of pages in the OCR document to find the text and graphics zones using predefined parameters

Syntax

C#
VB
Java
Objective-C
C++
Sub NativeAutoZone( _ 
   ByVal zoneParser As Leadtools.Ocr.NativeOcrZoneParser, _ 
   ByVal fillMethod As Leadtools.Ocr.NativeOcrZoneFillMethod, _ 
   ByVal firstPageIndex As Integer, _ 
   ByVal lastPageIndex As Integer, _ 
   ByVal callback As Leadtools.Ocr.OcrProgressCallback _ 
)  
- (BOOL)autoZonePagesInRange:(NSRange)range 
                    progress:(nullable LTOcrProgressHandler)progressHandler 
                       error:(NSError **)error 
             
public void autoZone(NativeOcrZoneParser zoneParser, 
                     NativeOcrZoneFillMethod fillMethod, 
                     int firstPageIndex, 
                     int lastPageIndex, 
                     OcrProgressListener callback) 
             

Parameters

zoneParser
The parser used for auto zoning.

Note: This parameter will always contain NativeOcrZoneParser.Default when using the LEADTOOLS OCR Module - LEAD Engine.

fillMethod
The fill method used in the zones found.

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

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

callback
Optional callback to show operation progress.

Remarks

For more information on auto zoning and decomposition, refer to IOcrPage.NativeAutoZone.

This method will iterate through the pages between firstPageIndex and lastPageIndex and run IOcrPage.NativeAutoZone on each page.

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

To perform auto decomposition to all the pages in the OCR document use AutoZone(OcrProgressCallback callback).

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.

Requirements

Target Platforms

Help Version 20.0.2018.1.18
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Leadtools.Ocr Assembly