L_MRZDetection

#include "Ltimgcor.h"

L_LTIMGCOR_API L_INT L_MRZDetection(pBitmap, Inrc, Outrc)

BITMAPHANDLE* pBitmap;	pointer to the bitmap handle
L_RECT Inrc;	structure that represents the area to be searched
L_RECT* Outrc;	pointer to an L_RECT structure that represents the location of the MRZ zone that was detected

Automatically detects a machine-readable passport (MRZ) zone in a document image.

Parameter	Description
pBitmap	Pointer to the bitmap handle referencing the bitmap to be searched.
Inrc	Structure that represents the area to be searched.
Outrc	Pointer to a structure representing the location of the MRZ zone.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

This function searches a given L_RECT zone and detects whether it contains an MRZ zone.

This function can only process the region specified by the InRect parameter. It does not support regions.

This function supports 8-,12-, and 16-bit grayscale images and 24- and 32-bit colored images.

Required DLLs and Libraries

LTIMGCOR

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64, Linux.

Example

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName 
L_INT MRZDetectionExample(L_VOID) 
{ 
   L_INT nRet; 
   BITMAPHANDLE LeadBitmap;   /* Bitmap handle to hold the loaded image. */ 
   /* Load the bitmap, keeping the bits per pixel of the file the same */ 
   nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("MRZ_SAMPLE.jpg")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); 
   if(nRet != SUCCESS) 
      return nRet ; 
   // set the searching area 
   RECT inRect ; 
   inRect.left   = 0 ; 
   inRect.top    = 0 ; 
   inRect.right  = LeadBitmap.Width-1 ; 
   inRect.bottom = LeadBitmap.Height-1 ; 
   // detect the MRZ zone 
   L_RECT MRZZone ; 
   nRet = L_MRZDetection(&LeadBitmap, inRect, &MRZZone); 
   if(nRet != SUCCESS) 
      return nRet ; 
   //free the bitmap 
   if(LeadBitmap.Flags.Allocated) 
      L_FreeBitmap(&LeadBitmap); 
   return nRet ; 
}

Help Version 19.0.2017.10.27

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Functions:	L_MICRDetection
Topics:	Raster Image Functions: Image Analysis
	Processing an Image
	Raster Image Functions: Document Imaging