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OcrZoneType Enumeration
See Also  
Leadtools.Forms.Ocr Namespace : OcrZoneType Enumeration



Zone types.

Syntax

Visual Basic (Declaration) 
<SerializableAttribute()>
Public Enum OcrZoneType 
   Inherits Enum
Visual Basic (Usage)Copy Code
Dim instance As OcrZoneType
C# 
[SerializableAttribute()]
public enum OcrZoneType : Enum 
C++/CLI 
[SerializableAttribute()]
public enum class OcrZoneType : public Enum 

Members

MemberDescription
Text Flowing text type zone.
Table Table type zone.
Graphic Zone containing graphics (Not sure).
Column Column type zone.
Header Header type zone.
Footer Footer type zone.
Caption Caption type zone.
Title Title type zone.
Other Other zone type.
AutoGraphic Zone containing graphics (sure).
VerticalText Vertical characters. For Asian characters only.
LeftRotatedText Left rotated text (90 degrees counter clockwise). For Latin, Greek and Cyrillic characters only.
RightRotatedText Right rotated text (90 degrees clockwise). For Latin, Greek and Cyrillic characters only.

Example

For an example, refer to IOcrPage.AutoZone.

Remarks

The OcrZoneType is used to classify the zone into one of the three basic zone-categories: flowing text, table or graphics. For these, use OcrZoneType.Text, OcrZoneType.Table, and OcrZoneType.Graphic respectively.

For flowing text, any of the following text types can appear instead of OcrZoneType.Text: OcrZoneType.Column, OcrZoneType.Header, OcrZoneType.Footer, OcrZoneType.Caption, OcrZoneType.Title, OcrZoneType.VerticalText, OcrZoneType.LeftRotatedText, OcrZoneType.RightRotatedText or OcrZoneType.Other.

One of these values is typically created by the page-layout decomposition (auto-zoning) process of the page (see IOcrPage.AutoZone), however they have the same meaning for the recognition algorithms: the zone contains flowing text.

The OcrZoneType.Table type is for table-type zones. In this type of zone is specified, the OCR engine will try to reconstruct the original table text layout of the zone in the final output document.

For graphic zones use the OcrZoneType.Graphic type. If OcrZoneType.Graphic is specified, no recognition will be run on the zone and all other recognition related settings will be ignored. The related OcrZoneType.AutoGraphic type can appear as the result of the page-layout decomposition (auto-zoning) process, and also signifies a graphic zone. The difference is, OcrZoneType.Graphic is the type that you as the user set in the zone to denote a graphic zone that contain no text, OcrZoneType.AutoGraphic is the type set by the engine during auto-zoning.

Each OCR engine supports different type of zones. To get the type of zones supported by the engine, use IOcrZoneManager.GetSupportedZoneTypes. Trying to set a zone type that is not supported by the engine will cause an error.

Inheritance Hierarchy

System.Object
   System.ValueType
      System.Enum
         Leadtools.Forms.Ocr.OcrZoneType

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

See Also

OcrZoneType requires an OCR module license and unlock key. For more information, refer to: Imaging Pro/Document/Medical Features