#include "Ltimgcor.h"

L_LTIMGCOR_API L_INT L_MRZDetection(pBitmap, Inrc, Outrc)


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.



The function was successful.

< 1

An error occurred. Refer to Return Codes.


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


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


Win32, x64, Linux.

See Also




Raster Image Functions: Image Analysis

Processing an Image
Raster Image Functions: Document Imaging


#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 
   return nRet ; 

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