L_AutoLineRemove (original) (raw)
Summary
Detects and removes the straight lines from the document image.
This function is available in the Document and Medical Imaging toolkits.
Syntax
#include "l_bitmap.h"
L_LTIMGCOR_API L_INT L_AutoLineRemove(pBitmap)
Parameters
pBITMAPHANDLE pBitmap
Pointer to the bitmap handle referencing the bitmap on which to perform line removal.
Returns
| Value | Meaning |
|---|---|
| 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 does not 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
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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