OcrZoneRecognitionModule Enumeration

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[DataContractAttribute(Namespace="http://Leadtools.Services.Forms.DataContracts/2009/01", Name="OcrZoneRecognitionModule")]
public enum OcrZoneRecognitionModule : System.Enum, System.IComparable, System.IConvertible, System.IFormattable

'Declaration
 
<DataContractAttribute(Namespace="http://Leadtools.Services.Forms.DataContracts/2009/01", Name="OcrZoneRecognitionModule")>
Public Enum OcrZoneRecognitionModule 
   Inherits System.Enum
   Implements System.IComparable, System.IConvertible, System.IFormattable

'Usage
 
Dim instance As OcrZoneRecognitionModule

[DataContractAttribute(Namespace="http://Leadtools.Services.Forms.DataContracts/2009/01", Name="OcrZoneRecognitionModule")]
public enum class OcrZoneRecognitionModule : public System.Enum, System.IComparable, System.IConvertible, System.IFormattable

Value	Member	Description
0x00000000	Auto	The engine will try to automatically select the most suitable recognition module for the zone. This will be determined just before recognition, according to the zone's filling method (OcrZone.FillMethod) and, if necessary, other settings, most typically the character set.
0x00000001	OmniFontMText	M/TEXT omnifont recognition module.
0x00000002	OmniFontMor	Multi-lingual MOR omnifont recognition module.
0x00000003	DotMatrix	DOT 9-pin draft dot-matrix recognition module.
0x00000004	Omr	OMR (Optical Mark Recognition) module.
0x00000005	IcrNumeral	Handprinted numeral recognition module.
0x00000006	IcrCharacter	Handprinted character recognition module.
0x00000007	MatrixMatching	MAT matrix matching recognition module.
0x00000008	OmniFontPlus2WayVoting	Omni Font 2-way voting module.
0x00000009	OmniFontFireWorx	Omni Font FireWorx module.
0x0000000A	OmniFontPlus3WayVoting	Omni Font 3-way voting module.
0x0000000B	Asian	Asian characters recognition module.

OcrZoneRecognitionModule contains the different recognition modules of the engine available to you. A recognition module must have been assigned to all zones in their OcrZone.RecognitionModule properties before processing.

Each zone needs to be associated with a OcrZoneRecognitionModule and a OcrZoneFillMethod. This is needed because some recognition modules support more than one fill method, and some fill methods are accepted by more than one recognition module. It is important to ensure that the recognition module/fill method pair is suitable. For example, the multi-lingual MOR omnifont recognition module OcrZoneRecognitionModule.OmniFontMor is capable of recognizing omnifont machine print (OcrZoneFillMethod.OmniFont), 24-pin draft dot-matrix print (OcrZoneFillMethod.DraftDot24), OCR-A (OcrZoneFillMethod.OcrA) and OCR-B (OcrZoneFillMethod.OcrB) texts.

For precise information on permitted recognition module/fill method pairs refer to An Overview of OCR Recognition Modules.

OcrZoneRecognitionModule.Auto can be set in the OcrZone.RecognitionModule property by the user, it will also be generated by the auto-zoning process.

When OcrZoneRecognitionModule.Auto is set, the recognition module is chosen primarily by the fill method (either directly specified, taken as default or auto-detected). The choices will be as follows:

Fill Method	Recognition Module
OcrZoneFillMethod.DotDigitt	OcrZoneRecognitionModule.MatrixMatching
OcrZoneFillMethod.DashDigit	OcrZoneRecognitionModule.MatrixMatching
OcrZoneFillMethod.Mice	OcrZoneRecognitionModule.MatrixMatching
OcrZoneFillMethod.OcrA	OcrZoneRecognitionModule.MatrixMatching
OcrZoneFillMethod.OcrB	OcrZoneRecognitionModule.MatrixMatching
OcrZoneFillMethod.Omr	OcrZoneRecognitionModule.Omr
OcrZoneFillMethod.Icr	OcrZoneRecognitionModule.IcrNumeral or OcrZoneRecognitionModule.IcrCharacter
OcrZoneFillMethod.OmniFont	OcrZoneRecognitionModule.OmniFontMText or OcrZoneRecognitionModule.OmniFontMor
OcrZoneFillMethod.DraftDotMatrix9	OcrZoneRecognitionModule.OmniFontMText or OcrZoneRecognitionModule.OmniFontMor
OcrZoneFillMethod.DraftDotMatrix24	OcrZoneRecognitionModule.OmniFontMText or OcrZoneRecognitionModule.DotMatrix

In the first nine cases, only the fill method will be used to determine the recognition module, there will be no checking whether other settings are suitable. With OcrZoneFillMethod.Icr, OcrZoneRecognitionModule.IcrCharacter will be chosen if letters or other characters unsupported by OcrZoneRecognitionModule.IcrNumeral are validated for recognition. The last three will be directed to OcrZoneRecognitionModule.OmniFontMText, unless the engine finds a language, filter or other setting which is not supported by this module. For further details see the An Overview of OCR Recognition Modules.

As an example, the zone's fill method is OcrZoneFillMethod.OmniFont and OcrZoneRecognitionModule.Auto has been specified.

If only the characters of English and/or the main West European languages are validated for recognition, then the M/TEXT omnifont recognition module (OcrZoneRecognitionModule.OmniFontMText) will be automatically selected.

However, if e.g. the Polish characters are also to be recognized, the engine will select the multi-lingual MOR omnifont recognition module OcrZoneRecognitionModule.OmniFontMor, since the M/TEXT recognition module does not support the Polish characters, but the MOR recognition module does.

For an example, refer to DocumentConvertOptions.PagesZones

System.Object
   System.ValueType
      System.Enum
         Leadtools.Services.Forms.DataContracts.OcrZoneRecognitionModule

Target Platforms

Reference

Leadtools.Services.Forms.DataContracts Namespace