GdPicture.NET.14~GdPicture14.GdPictureOCR~SetVariable - SetVariable Method (GdPictureOCR) -

SetVariable Method (GdPictureOCR)

In This Topic

Sets up a specified value for an internal parameter of the OCR engine. The Tesseract engine has a large number of control parameters to modify its behavior.Tesseract-OCR parameters

Tesseract-OCR parameters

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function SetVariable( _
   ByVal Name As String, _
   ByVal Value As String _
) As GdPictureStatus

public GdPictureStatus SetVariable( 
   string Name,
   string Value
)

public function SetVariable( 
    Name: String;
    Value: String
): GdPictureStatus;

public function SetVariable( 
   Name : String,
   Value : String
) : GdPictureStatus;

public: GdPictureStatus SetVariable( 
   string* Name,
   string* Value
)

public:
GdPictureStatus SetVariable( 
   String^ Name,
   String^ Value
)

Parameters

Name: The name of the parameter. You can find a wide range of possible variables listed in Tesseract-OCR parameters.
Value: The value for the specified parameter.

Return Value

A member of the GdPictureStatus enumeration. If the method has been successfully followed, then the return value is GdPictureStatus.OK

We strongly recommend always checking this status first.

Remarks

Tesseract-OCR parameters

Example

How to set the required variables of the Tesseract engine.

Tesseract-OCR parameters

VB.NET
C#

Using gdpictureOCR As GdPictureOCR = New GdPictureOCR()
    'Some examples of Tesseract variables:
    gdpictureOCR.SetVariable("chop_enable", "T")
    gdpictureOCR.SetVariable("use_new_state_cost", "F")
    gdpictureOCR.SetVariable("segment_segcost_rating", "F")
    gdpictureOCR.SetVariable("enable_new_segsearch", "0")
    gdpictureOCR.SetVariable("language_model_ngram_on", "0")
    gdpictureOCR.SetVariable("textord_force_make_prop_words", "F")
    gdpictureOCR.SetVariable("edges_max_children_per_outline", "40")
    'You can find more variables here:
    'http://www.sk-spell.sk.cx/tesseract-ocr-parameters-in-302-version
End Using

using (GdPictureOCR gdpictureOCR = new GdPictureOCR())
{
    //Some examples of Tesseract variables:
    gdpictureOCR.SetVariable("chop_enable", "T");
    gdpictureOCR.SetVariable("use_new_state_cost", "F");
    gdpictureOCR.SetVariable("segment_segcost_rating", "F");
    gdpictureOCR.SetVariable("enable_new_segsearch", "0");
    gdpictureOCR.SetVariable("language_model_ngram_on", "0");
    gdpictureOCR.SetVariable("textord_force_make_prop_words", "F");
    gdpictureOCR.SetVariable("edges_max_children_per_outline", "40");
 
    //You can find more variables here:
    //http://www.sk-spell.sk.cx/tesseract-ocr-parameters-in-302-version
}

Example

Tesseract-OCR parameters
How to set the required variables of the Tesseract engine. Using gdpictureOCR As GdPictureOCR = New GdPictureOCR() 'Some examples of Tesseract variables: gdpictureOCR.SetVariable("chop_enable", "T") gdpictureOCR.SetVariable("use_new_state_cost", "F") gdpictureOCR.SetVariable("segment_segcost_rating", "F") gdpictureOCR.SetVariable("enable_new_segsearch", "0") gdpictureOCR.SetVariable("language_model_ngram_on", "0") gdpictureOCR.SetVariable("textord_force_make_prop_words", "F") gdpictureOCR.SetVariable("edges_max_children_per_outline", "40") 'You can find more variables here: 'http://www.sk-spell.sk.cx/tesseract-ocr-parameters-in-302-version End Using using (GdPictureOCR gdpictureOCR = new GdPictureOCR()) { //Some examples of Tesseract variables: gdpictureOCR.SetVariable("chop_enable", "T"); gdpictureOCR.SetVariable("use_new_state_cost", "F"); gdpictureOCR.SetVariable("segment_segcost_rating", "F"); gdpictureOCR.SetVariable("enable_new_segsearch", "0"); gdpictureOCR.SetVariable("language_model_ngram_on", "0"); gdpictureOCR.SetVariable("textord_force_make_prop_words", "F"); gdpictureOCR.SetVariable("edges_max_children_per_outline", "40"); //You can find more variables here: //http://www.sk-spell.sk.cx/tesseract-ocr-parameters-in-302-version }

Reference

GdPictureOCR Class
GdPictureOCR Members
Tesseract-OCR parameters
RunOCR Method
ResetParameters Method