L_AutoDocumentBinarization

#include "l_bitmap.h"

L_LTIMGCOR_API L_INT L_AutoDocumentBinarization(pBitmap)

pBITMAPHANDLE pBitmap;

pointer to the bitmap handle

Applies binary segmentation to a bitmap automatically.

Parameter Description
pBitmap Pointer to the bitmap handle that references the bitmap to be affected.

Returns

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

Comments

This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.

This function does not support 12 and 16-bit grayscale and 48 and 64-bit color images.

This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.

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_DeskewBitmap, L_PerspectiveBitmap, L_AutoBinarizeBitmap, L_DynamicBinaryBitmap
Topics: Removing Noise

Example

This example loads a bitmap and applies auto document binarization filter.

L_INT AutoDocumentBinarizationFilterBitmapExample(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 */ 
   nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("Sample.mrc")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); 
   if(nRet !=SUCCESS) 
      return nRet; 
 
   /* Apply a auto document binarization filter*/ 
   nRet = L_AutoDocumentBinarization(&LeadBitmap); 
   if(nRet !=SUCCESS) 
      return nRet; 
 
   nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL); 
   if(nRet !=SUCCESS) 
      return nRet; 
 
   //free bitmap  
   if(LeadBitmap.Flags.Allocated)   
      L_FreeBitmap(&LeadBitmap);   
   return SUCCESS; 
} 

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