L_AutoLineRemove

#include "l_bitmap.h"

L_LTIMGCOR_API L_INT L_AutoLineRemove(pBitmap)

pBITMAPHANDLE 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.

See Also

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

Example

This example loads a bitmap and applies auto line remove filter.

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; 
} 

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