OmrOptions Property

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

IOcrOmrOptions OmrOptions {get;}

'Declaration
 
ReadOnly Property OmrOptions As IOcrOmrOptions

'Usage
 
Dim instance As IOcrZoneManager
Dim value As IOcrOmrOptions
 
value = instance.OmrOptions

IOcrOmrOptions OmrOptions {get;}

get_OmrOptions();

property IOcrOmrOptions^ OmrOptions {
   IOcrOmrOptions^ get();
}

Property Value

An IOcrOmrOptions interface implementation object that defines the OMR settings currently used by the engine.

OMR stands for Optical Mark Recognition. For more information refer to Using OMR in LEADTOOLS .NET OCR.

You can get the instance of the IOcrOmrOptions interface currently used in the engine using the IOcrSpellCheckManager.OmrOptions property.

With the IOcrOmrOptions interface, you can change the following OMR settings:

Change the frame detection method using the IOcrOmrOptions.FrameDetectionMethod property. Frames stand for the check boxes that may exist around OMR fields.
Change the sensitivity of the OMR detection engine using the IOcrOmrOptions.Sensitivity property.
Change the characters being used to replace unfilled and filled OMR marks in the output document (for example, in a PDF file) using the IOcrOmrOptions.GetStateRecognitionCharacter and IOcrOmrOptions.SetStateRecognitionCharacter methods. Note that outputting OMR characters in final document is not supported in native engine formats.

Calling IOcrPage.Recognize, updates all OMR zone properties as follows:

Property	Description
OcrZone.OmrState	Either OcrOmrZoneState.Filled if the mark is recognized as being filled or checked, or OcrOmrZoneState.Unfilled if the mark is recognized as being unfilled or unchecked.
OcrZone.OmrConfidence	A number between 0 and 100 (where 100 is maximum confidence) that specifies the confidence the OCR engine has in recognizing the OcrZone.OmrState.

The OMR zones of a page have the following properties:

Property	Value
OcrZone.FillMethod	Set to OcrZoneFillMethod.Omr
OcrZone.RecognitionModule	Set to OcrZoneRecognitionModule.Omr

All LEADTOOLS OCR engines support OMR. However, currently autodetection of OMR zones is not supported. Instead, you need to: here is no current support for auto-detecting OMR zones in a page, you have to add the OMR zones manually to the page by setting their boundary (through OcrZone.Bounds, the fill method and recognition module as described above and adding the zone to the page using the IOcrPage.Zones collection before calling IOcrPage.Recognize.

To use OMR in LEADTOOLS, you need a special key to unlock the OMR capabilities. For more information, refer to Unlocking Special LEAD Features.

For an example, refer to IOcrOmrOptions.

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

IOcrZoneManager Interface
IOcrZoneManager Members
OcrEngineManager Class
OcrEngineType Enumeration
IOcrPageCollection Interface
IOcrZoneCollection Interface
IOcrZoneManager Interface
IOcrOmrOptions Interface
OcrZone Structure
OcrZoneRecognitionModule Enumeration
OcrZoneFillMethod Enumeration
Programming with the LEADTOOLS .NET OCR
Using OMR in LEADTOOLS .NET OCR
Unlocking Special LEAD Features