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.

See Also

Functions:

L_MICRDetection

Topics:

Raster Image Functions: Image Analysis

Processing an Image
Raster Image Functions: Document Imaging

Example

This example loads a bitmap and applies the MRZ detector.

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 ; 
} 

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