L_AutoLineRemove

#include "l_bitmap.h"

L_LTIMGCOR_API L_INT L_AutoLineRemove(pBitmap)

pointer to the bitmap

Detects and removes the straight lines from the document image.

This function is available in the Document and Medical Imaging toolkits.

Parameter	Description
pBitmap	Pointer to the bitmap handle referencing the bitmap on which to perform line removal.

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 internally converts image into 1-bit black and white images.

This function doesn't support region.

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.

Example

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName 
L_INT AutoLineRemoveFilterBitmapExample(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("clean.tif")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); 
   if(nRet != SUCCESS) 
      return nRet ; 
   /* Apply auto line remove filter to remove vertical and horizontal lines */ 
   nRet = L_AutoLineRemove(&LeadBitmap); 
   if(nRet !=SUCCESS) 
   { 
      //free bitmap 
      if(LeadBitmap.Flags.Allocated) 
         L_FreeBitmap(&LeadBitmap); 
      return nRet ; 
   } 
   nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL); 
   //free bitmap 
   if(LeadBitmap.Flags.Allocated) 
      L_FreeBitmap(&LeadBitmap); 
   return nRet; 
}

Help Version 19.0.2017.10.27

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LEADTOOLS Raster Imaging C API Help

Introduction

Version History

Getting Started

LEADTOOLS Raster Imaging Features

Redistributables/Files To Be Included With Your Application

Functions:	LINEREMOVECALLBACK, L_SmoothBitmap, L_BorderRemoveBitmap, L_InvertedTextBitmap, L_DotRemoveBitmap, L_HolePunchRemoveBitmap, L_BlankPageDetectorBitmap, L_AutoBinarizeBitmap, L_DynamicBinaryBitmap, L_AutoBinaryBitmap, L_InvertedPageBitmap
Topics:	Cleaning Up 1-Bit Images
	Raster Image Functions: Cleaning Up 1-Bit Images