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NativeOcrZoneFillMethod Enumeration


Possible content types of the zones

public enum NativeOcrZoneFillMethod 
Public Enum NativeOcrZoneFillMethod  
public enum NativeOcrZoneFillMethod 
public enum class NativeOcrZoneFillMethod   

0Default Default zone filling method. The IOcrPage.AutoZone(OcrProgressCallback callback) method will set all the fill method of the zones found to this value. You can set the zone filling method to another type by using IOcrPage.AutoZone(OcrZoneParser zoneParser, NativeOcrZoneFillMethod fillMethod, OcrProgressCallback callback) with fillMethod set the zone type desired.
1OmniFont Omnifont zone filling method. It denotes a machine printed text with any typeface which is not too stylized.
2Omr Optical mark zone filling method. It denotes a possible marking within the zone.
3Icr Hand-printed zone filling method.
4DraftDotMatrix9 9-pin draft dot-matrix zone filling method. It denotes a 9-pin draft dot-matrix printout.
5DraftDotMatrix24 24-pin draft dot-matrix zone filling method. It denotes a 24-pin draft dot-matrix printout.
6OcrA OCR-A zone filling method.
7OcrB OCR-B zone filling method.
8Micr Magnetic ink character filling method. Mostly used in bank checks.
9DotDigit Dot-digit zone filling method.
10DashDigit Dash-digit zone filling method.
11NoRecognition No recognition will be attempted.
12Asian The zone contains Asian characters.
13FieldData The zone contains field data.
14Cmc7 CMC7 zone filling method.


Used with engine-specific zones. For more information, refer to IOcrZoneManager.GetNativeZone and IOcrZoneManager.SetNativeZone.

A fill method must have been assigned to all zones in their NativeOcrZone.FillMethod properties before processing.

Not all fill methods are available to all engines. To determine which fill methods are available use IOcrZoneManager.GetSupportedNativeFillMethods. Trying to set a fill method not available to the engine will cause an error.

Each zone needs to be associated with a NativeOcrZoneRecognitionModule and NativeOcrZoneFillMethod. 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 more information on permitted recognition module/fill method pairs refer to An Overview of OCR Recognition Modules.

Note that the auto-zoning IOcrPage.AutoZone will create the zones with the value NativeOcrZoneFillMethod.Default in their NativeOcrZone.FillMethod properties.


For an example, refer to IOcrPage.AutoZone.


Target Platforms

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