L_OcrOMROptions

Summary

The OMR settings currently used in the engine.

Syntax

struct L_OcrOMROptions 
{ 
   L_UINT StructSize; 
   L_OcrOMRFrameDetectionMethod FrameDetectionMethod; 
   L_OcrOMRSensitivity Sensitivity; 
   L_WCHAR StateRecognitionCharacters[2]; // 0 = unfilled, 1 = filled 
}; 
typedef struct L_OcrOMROptions L_OcrOMROptions; 

Members

StructSize

Structure size. It should be equal to sizeof(L_OcrOMROptions).

FrameDetectionMethod

Gets or sets the OMR frame detection mode.

Sensitivity

Gets or sets the OMR sensitivity mode.

StateRecognitionCharacters

The characters used to represent an OMR state in the output document.

Comments

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

You can call the L_OcrZoneManager_GetOMROptions method to get the current OMR options currently used by the engine.

With the L_OcrOmrOptions structure, you can change the following OMR settings:

• Change the frame detection method using the L_OcrOmrOptions.FrameDetectionMethod member. Frames stand for the checkbox that may exist around OMR fields.
• Change the sensitivity of the OMR detection engine using the L_OcrOmrOptions.Sensitivity member.
• Change the characters to use as a replacement for unfilled and filled OMR marks in the output document (for example, in a PDF file) using the L_OcrOmrOptions.StateRecognitionCharacters member, knowing that the first element of this member array represents the unfilled state character and the second element represents the filled state character.

The OMR zones of a page are zones with L_OcrZone.ZoneType set to L_OcrZoneType_OMR.

LEADTOOLS OCR Module - LEAD Engine supports auto-detection of OMR zones during auto-zoning of the OCR page, you just have to make sure that "Detect Checkbox" is one of the Recognition.Zoning.Options setting flags before calling L_OcrPage_AutoZone or L_OcrPage_Recognize.

To use OMR in LEADTOOLS, you need a special key to unlock the OMR capabilities. For more information, refer to Setting a Runtime License.

Usage

• L_OcrZoneManager_GetOMROptions
• L_OcrZoneManager_SetOMROptions