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#1 Posted : Wednesday, March 21, 2012 11:23:56 PM(UTC)
fildomen

Groups: Registered
Posts: 1


Hi,
I'm trying to binarize a bitmap with L_AutoBinarizeBitmap and call L_BorderRemoveBitmap after that, the problem is that i get a ERROR_BITPERPIXEL error on the BorderRemove method. Here is my code:

L_INT Doc2AddPageExample(L_HDOC2 hDoc,L_TCHAR* pszFileName)
{
L_INT nRet;
BITMAPHANDLE Bitmap;
L_INT nPageCount = 0;
L_TCHAR szBuffer[100];

memset(szBuffer, 0, sizeof(szBuffer));

nRet = L_InitBitmap(&Bitmap, sizeof(BITMAPHANDLE), 0, 0,0);
if(nRet != SUCCESS)
return nRet;

nRet = L_LoadBitmap(pszFileName, &Bitmap, sizeof(BITMAPHANDLE),0, ORDER_BGRORGRAY, NULL, NULL);
if (nRet != SUCCESS)
return nRet;

nRet = L_AutoBinarizeBitmap( &Bitmap, 0, AUTO_BINARIZE_PRE_BG_ELIMINATION | AUTO_BINARIZE_THRESHOLD_AUTO);
if (nRet != SUCCESS)
return nRet;

nRet = BorderRemoveBitmapExample( &Bitmap);
if (nRet != SUCCESS)
return nRet;

nRet = L_Doc2AddPage(hDoc, &Bitmap, 0);
if (nRet != SUCCESS)
return nRet;

nRet = L_Doc2GetPageCount (hDoc, &nPageCount);
return SUCCESS;
}

L_INT BorderRemoveBitmapExample(pBITMAPHANDLE pBitmap)
{
L_INT32 nRet;
BORDERREMOVE br;
BITMAPHANDLE RegionBitmap;

memset(&RegionBitmap, 0, sizeof(BITMAPHANDLE));

//Create a NULL region
br.uStructSize = sizeof(BORDERREMOVE);
br.iBorderPercent = 20;
br.iVariance = 2;
br.iWhiteNoiseLength = 5;
br.uBorderToRemove = BORDER_TOP | BORDER_BOTTOM | BORDER_LEFT | BORDER_RIGHT;
br.uFlags = BORDER_USE_VARIANCE;
br.pBitmapRegion = &RegionBitmap;
br.uBitmapStructSize = sizeof(BITMAPHANDLE);

nRet = L_BorderRemoveBitmap( pBitmap,&br,NULL,NULL,0);

if (nRet == SUCCESS)
{
RECT rectRgn;
HRGN hRgnAll;
GetRgnBox(hRgnAll, &rectRgn);
if (!IsRectEmpty(&rectRgn))
{
nRet = L_SetBitmapRgnHandle(pBitmap, NULL, hRgnAll, L_RGN_SET);
if(nRet != SUCCESS)
return nRet;
DeleteObject(hRgnAll);
}
}
else
{
return nRet;
}

return nRet;
}

Can someone help me figure out how to make it work ?

Thank you,

Yassine
 

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#2 Posted : Thursday, March 22, 2012 6:35:17 AM(UTC)
Maen Hasan

Groups: Registered, Tech Support
Posts: 1,328

Was thanked: 1 time(s) in 1 post(s)

To resolve the problem, you need to change the bitmap's bits-per-pixel to 1-bit after calling the L_AutoBinarizeBitmap() function. You can do this by using the L_ColorResBitmap() function.

Thanks,
Maen Badwan
LEADTOOLS Technical Support
 
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