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#1 Posted : Sunday, May 11, 2008 11:08:08 AM(UTC)

alir  
alir

Groups: Registered
Posts: 3


The code that I'm posting worked fine with v13 but it fails with V15 eval.

The call to L_DocAddPage returns ERROR_DOC_INV_IMAGE_RESOLUTION.


CDC *pDC = GetDC();


CDC MemDC;
MemDC.CreateCompatibleDC(pDC);


CBitmap Bmp;
Bmp.CreateCompatibleBitmap(pDC,m_Capture.Width(),m_Capture.Height());

CBitmap *pOldBmp = MemDC.SelectObject(&Bmp);

CDC *pDeskDC = GetDesktopWindow()->GetDC();

MemDC.BitBlt(0,0,m_Capture.Width(),m_Capture.Height(),pDeskDC,m_Capture.left,m_Capture.top,SRCCOPY);

GetDesktopWindow()->ReleaseDC(pDeskDC);

L_INT Ret;


L_InitBitmap(&BmpHandle, sizeof(BITMAPHANDLE), 0, 0, 0);
L_ChangeFromDDB(MemDC.GetSafeHdc(),&BmpHandle,sizeof(BITMAPHANDLE),(HBITMAP)Bmp.GetSafeHandle(),NULL);
if (!m_Palm || m_Pocket)
{
Ret = L_ColorResBitmap(&BmpHandle,&BmpHandle,sizeof(BITMAPHANDLE),1,CRF_OPTIMIZEDPALETTE,NULL,NULL,0,NULL,NULL);
}
if (!m_Pocket)
{
for (int i = 0; i GetSafeHdc(), /* Device context */
&BmpHandle,/* Bitmap handle */
NULL, /* Default source rectangle */
NULL, /* Default source clip area */
&MyRect, /* Destination rectangle */
NULL, /* Default destination clipping rectangle */
SRCCOPY); /* ROP3 code for a Normal Paint */

ReleaseDC(pDC);

Ret = L_DocAddPage(hDoc,&BmpHandle,0);

LANGIDS * pLangIds = NULL;
L_INT nLangCount = 0;
RECOGNIZEOPTS RecogOpts;
RECOGMODULE_TRADEOFF TradeOff;

L_INT nRet = L_DocGetDefaultSpellLanguages (hDoc, &pLangIds, &nLangCount);
if (nRet == SUCCESS)
{
nRet = L_DocGetRecognizeModuleTradeOff(hDoc, &TradeOff);
if (TradeOff != RECGMD_ACCURATE)
nRet = L_DocSetRecognizeModuleTradeOff(hDoc, RECGMD_BALANCED);
HANDPRINTOPTIONS HOptions;
HOptions.uStructSize = sizeof(HANDPRINTOPTIONS);
HOptions.bSpace = FALSE;
HOptions.nCharHeight = HOptions.nCharSpace = HOptions.nCharWidth = 0;
HOptions.style = HAND_STYLE_US;
L_DocSetHandPrintOptions(hDoc,&HOptions);

RecogOpts.uStructSize = sizeof(RECOGNIZEOPTS);
RecogOpts.nPageIndexStart = 0;
RecogOpts.nPagesCount = 1;
RecogOpts.bEnableSubSystem = TRUE;
RecogOpts.bEnableCorrection = TRUE;
RecogOpts.SpellLangId = LANG_ID_NO;
RecogOpts.pszFileName = TEXT("c:\\testrdf.rdf");

// nRet = L_DocRecognize(hDoc, &RecogOpts, NULL, NULL);
nRet = L_DocRecognize(hDoc, &RecogOpts, NULL, NULL);
RECOGCHARS *pRecChar;
L_INT32 Count;
nRet = L_DocGetRecognizedCharacters(hDoc,0,&pRecChar,&Count,sizeof(RECOGCHARS));
TRACE1("Count %d\n",Count);
m_LettersCtrl.SetWindowText(m_Letters);
if (Count < 6)
{
continue;
}
for (int i = 0; i < Count;i++)
{
m_Letters += CString(pRecChar[i].wGuessCode);
if (m_Letters[i] == '0')
{
m_Letters.SetAt(i,'O');
}
if (m_Letters[i] == '1')
{
m_Letters.SetAt(i,'I');
}
}
L_DocFreeRecognizedCharacters(hDoc,&pRecChar);
 

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#2 Posted : Monday, May 12, 2008 5:42:19 AM(UTC)

Adnan Ismail  
Guest

Groups: Guests
Posts: 3,034

Was thanked: 2 time(s) in 2 post(s)






It seems
you're feeding images to the OCR engine that you draw on using Windows functions (some sort of screen capture).

In all
cases, when you give a bitmap to the OCR engine using L_DocAddPage, it should
have an appropriate value in the XResolution and YResolution members of the BITMAPHANDLE
structure. If these members have too low or too high values, try to change them to something between 150 and 300.

 
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