PreprocessPageCommands Property

Summary

Gets a list of the auto-preprocess commands to perform on each document page prior to recognition.

Syntax

Objective-C

C++

Java

public IList<OcrAutoPreprocessPageCommand> PreprocessPageCommands { get; }

ReadOnly Property PreprocessPageCommands As IList(Of OcrAutoPreprocessPageCommand)

@property (nonatomic, strong, readonly) NSMutableArray<NSNumber *> *preprocessPageCommands

public List<OcrAutoPreprocessPageCommand> getPreprocessPageCommands()

property IList<OcrAutoPreprocessPageCommand>^ PreprocessPageCommands { 
   IList<OcrAutoPreprocessPageCommand>^ get(); 
}

Property Value

A list of OcrAutoPreprocessPageCommand commands to perform on each document page prior to recognition. Default value is an array of on item (OcrAutoPreprocessPageCommand.Deskew).

Remarks

The IOcrAutoRecognizeManager interface also has the following options to use with the Run, RunJob and RunJobAsync methods:

Option	Description
IOcrAutoRecognizeManager.MaximumPagesBeforeLtd	Used to add support for converting a document with unlimited number of pages. An OCR recognition operation on a document that contains a large amount of pages (10 and more) might result in an out of memory error. All of the LEADTOOLS OCR engines supports saving the intermediate recognition results to a temporary LTD file (DocumentFormat.LTD). The result of subsequent pages will be appended to this temporary file. When all the pages of the document have been recognized, the engine will convert the temporary LTD file to the desired output format. The IOcrAutoRecognizeManager.MaximumPagesBeforeLtd property defines the maximum number of pages processed as a whole. For example, if the original document has 20 pages and the value of this property is 8, the engine will recognize the first 8 pages and saves the result to a temporary file, recognizes the second 8 pages and append the results, and finally, recognize the last 4 pages and convert the temporary document to the final format.
IOcrAutoRecognizeManager.PreprocessPageCommands	Holds an array of OcrAutoPreprocessPageCommand items to control what auto-preprocess operation to perform on each page document prior to recognition.

Option

Description

IOcrAutoRecognizeManager.MaximumPagesBeforeLtd

Used to add support for converting a document with unlimited number of pages. An OCR recognition operation on a document that contains a large amount of pages (10 and more) might result in an out of memory error. All of the LEADTOOLS OCR engines supports saving the intermediate recognition results to a temporary LTD file (DocumentFormat.LTD). The result of subsequent pages will be appended to this temporary file. When all the pages of the document have been recognized, the engine will convert the temporary LTD file to the desired output format. The IOcrAutoRecognizeManager.MaximumPagesBeforeLtd property defines the maximum number of pages processed as a whole. For example, if the original document has 20 pages and the value of this property is 8, the engine will recognize the first 8 pages and saves the result to a temporary file, recognizes the second 8 pages and append the results, and finally, recognize the last 4 pages and convert the temporary document to the final format.

IOcrAutoRecognizeManager.PreprocessPageCommands

Holds an array of OcrAutoPreprocessPageCommand items to control what auto-preprocess operation to perform on each page document prior to recognition.

Example

For an example, refer to IOcrAutoRecognizeManager.

Requirements

Target Platforms

Reference

IOcrAutoRecognizeManager Interface

IOcrAutoRecognizeManager Members

Programming with the LEADTOOLS .NET OCR

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Help Version 20.0.2020.4.2