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NativeOcrZoneType Enumeration

Summary

Native zone types.

Syntax

Java

WinRT C#

C++

[SerializableAttribute()] 
public enum NativeOcrZoneType

<SerializableAttribute()> 
Public Enum NativeOcrZoneType

[SerializableAttribute()] 
public enum NativeOcrZoneType

public enum NativeOcrZoneType

Leadtools.Forms.Ocr.NativeOcrZoneType = function() { }; 
Leadtools.Forms.Ocr.NativeOcrZoneType.prototype = {<br/> 
  Text = 0, 
    Table = 1, 
    Graphic = 2, 
    Column = 3, 
    Header = 4, 
    Footer = 5, 
    Caption = 6, 
    Title = 7, 
    Other = 8, 
    AutoGraphic = 9, 
    VerticalText = 10, 
    LeftRotatedText = 11, 
    RightRotatedText = 12, 
     
 };

[SerializableAttribute()] 
public enum class NativeOcrZoneType

Members

Value	Member	Description
0	Text	Flowing text type zone.
1	Table	Table type zone.
2	Graphic	Zone containing graphics (Not sure).
3	Column	Column type zone.
4	Header	Header type zone.
5	Footer	Footer type zone.
6	Caption	Caption type zone.
7	Title	Title type zone.
8	Other	Other zone type.
9	AutoGraphic	Zone containing graphics (sure).
10	VerticalText	Vertical characters. For Asian characters only.
11	LeftRotatedText	Left rotated text (90 degrees counter clockwise). For Latin, Greek and Cyrillic characters only.
12	RightRotatedText	Right rotated text (90 degrees clockwise). For Latin, Greek and Cyrillic characters only.

Remarks

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

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

For flowing text, any of the following text types can appear instead of NativeOcrZoneType.Text: NativeOcrZoneType.Column, NativeOcrZoneType.Header, NativeOcrZoneType.Footer, NativeOcrZoneType.Caption, NativeOcrZoneType.Title, NativeOcrZoneType.VerticalText, NativeOcrZoneType.LeftRotatedText, NativeOcrZoneType.RightRotatedText or NativeOcrZoneType.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 NativeOcrZoneType.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 NativeOcrZoneType.Graphic type. If NativeOcrZoneType.Graphic is specified, no recognition will be run on the zone and all other recognition related settings will be ignored. The related NativeOcrZoneType.AutoGraphic type can appear as the result of the page-layout decomposition (auto-zoning) process, and also signifies a graphic zone. The difference is, NativeOcrZoneType.Graphic is the type that you as the user set in the zone to denote a graphic zone that contain no text, NativeOcrZoneType.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.

Example

For an example, refer to IOcrPage.AutoZone.

Requirements

Target Platforms

Reference

Leadtools.Forms.Ocr Namespace

AutoZone Method

OcrEngineManager Class

OcrEngineType Enumeration

IOcrPageCollection Interface

IOcrZoneCollection Interface

OcrZone Structure

Programming with the LEADTOOLS .NET OCR

Help Version 19.0.2017.10.27