L_OcrOMROptions

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; 

The OMR settings currently used in the engine.

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 Advantage OCR 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.

This structure is used with the following functions:

L_OcrZoneManager_GetOMROptions

L_OcrZoneManager_SetOMROptions