1.安裝Microsoft Office Document Imaging

??? 1）查看是否安裝：開始->所有程序->Microsoft Office->工具-> Microsoft Office Document Imaging ?

? ? ?

? ? 或者?

? ? ? ?C:/Program Files/Common Files/Microsoft Shared/MODI/12.0

?? 2）如未安裝，則打開：控制面板->添加或刪除程序->Microsoft Office 2007->更改->添加或刪除功能->繼續(xù)->office工具->Microsoft Office Document Imaging ->從本機(jī)運行全部程序->繼續(xù)

? ? ? ?

????? 需要指定office2007安裝盤路徑，按照提示即可；

2.開發(fā)：

?? VC6.0建個MFC的Dialog based工程“OCR”，然后"Project"->"add to project"->"Components and controls"，在Registered ActiveX Controls中找到Microsoft Office Document Imaging Viewer Control 12.0，INSERT建立一個類。

? ? ? ?

? ? ? ?然后從控件工具箱中拖一個到窗口上，右鍵classWizard，Member Variables找到IDC_MIDOCVIEW1然后AddVariable變量名為m_MIDOCtrl。然后在窗口上拖三個按鈕控件"Brower"、"OCR"和"CLOSE"、一個靜態(tài)文本控件“IDC_STATIC_PATH”和一個可編輯文本框控件“IDC_EDIT_TEXT”。

? ? ? ?

? ? ? 然后在你的文件里面找到OCRDlg.cpp，在最上面寫的#import "C:/Program Files/Common Files/Microsoft Shared/MODI/12.0/MDIVWCTL.DLL"，路徑需要你自己改一下，大多數(shù)就是這個路徑，然后編譯一下，在Debug下能找到MDIVWCTL.tlh，復(fù)制到工程文件夾中，在OCRDlg.cpp中寫入#include "MDIVWCTL.tlh"，然后刪除剛剛寫的#import. "C:/Program Files/Common Files/Microsoft Shared/MODI/12.0/MDIVWCTL.DLL"。

1）實現(xiàn)打開TIF圖片并顯示在 ActiveX Control 中，Browser按鈕函數(shù)：

void COCRDlg::OnBtnBrowser()
{
?// TODO: Add extra validation here
?CString csFilePath;?
??? CFileDialog FileDlg(TRUE,"tif",NULL,OFN_HIDEREADONLY|OFN_FILEMUSTEXIST|OFN_ALLOWMULTISELECT,"Image Files (*.tif;*.tif)|*.tif;*.tif|All Files(*.*)|*.*||");?
?????
??? if(FileDlg.DoModal()==IDOK)?
??? {?
??????? csFilePath =? FileDlg.GetPathName();?
??????? SetDlgItemText(IDC_STATIC_PATH,csFilePath);?
??????? ((CMiDocView *) GetDlgItem( IDC_MIDOCVIEW1 ))->SetFileName(csFilePath) ;?
??????? ((CMiDocView *) GetDlgItem( IDC_MIDOCVIEW1 ))->SetFitMode(1);?
??? }?
}

2）COCRDlg類添加成員函數(shù)bReadOCRByMODIAXCtrl(CString csFilePath, CString &csText)，主實現(xiàn)識別

? BOOL COCRDlg::bReadOCRByMODIAXCtrl(CString csFilePath, CString &csText)?
{?
??? BOOL bRet? = TRUE;?
??? HRESULT hr = 0;?
??? csText.Empty();?
??? IUnknown?? *pVal??? = NULL;?
??? MODI::IDocument? *IDobj?? = NULL;?
??? MODI::ILayout????? *ILayout = NULL;?
??? MODI::IImages??? *IImages = NULL;?
??? MODI::IImage???? *IImage? = NULL;?
??? MODI::IWords???? *IWords? = NULL;?
??? MODI::IWord????? *IWord?? = NULL;?
??? try?
??? {?
??????? pVal = (IUnknown *) m_MIDOCtrl.GetDocument();??
??????? if ( pVal != NULL )?
??????? {?
?????????????
??????????? //Already has image in it, Don't need to create again??
??????????? //Just get IDocument interface??
??????????? hr = pVal->QueryInterface(IID_IDocument,(void**) &IDobj);?
??????????? if ( SUCCEEDED(hr) )?
??????????? {?
?????????????????
??????????????? hr = IDobj->OCR(MODI::miLANG_ENGLISH/*miLANG_CHINESE_SIMPLIFIED*/,1,1);?
??????????????? if ( SUCCEEDED(hr) )?
??????????????? {?
?????????????????????
?????????????????????
??????????????????? IDobj->get_Images(&IImages);?
??????????????????? long iImageCount=0;?
??????????????????? IImages->get_Count(&iImageCount);?
??????????????????? for ( int img =0; img<iImageCount;img++)?
??????????????????? {?
??????????????????????? IImages->get_Item(img,(IDispatch**)&IImage);?
??????????????????????? IImage->get_Layout(&ILayout);?
?????????????????????????
??????????????????????? long numWord=0;?
??????????????????????? ILayout->get_NumWords(&numWord);?
??????????????????????? ILayout->get_Words(&IWords);?
??????????????????????? IWords->get_Count(&numWord);?
?????????????????????????
??????????????????????? for ( long i=0; i<numWord;i++)?
??????????????????????? {?
??????????????????????????? IWords->get_Item(i,(IDispatch**)&IWord);?
??????????????????????????? CString csTemp;?
??????????????????????????? BSTR result;?
??????????????????????????? IWord->get_Text(&result);?
??????????????????????????? char buf[256];?
??????????????????????????? sprintf(buf,"%S",result);?
??????????????????????????? csTemp.Format("%s",buf);?
?????????????????????????
??????????????????????????? csText += csTemp;?
??????????????????????????? csText +=" ";?
??????????????????????? }?
??????????????????????? //Release all objects??
??????????????????????? IWord->Release();?
??????????????????????? IWords->Release();?
??????????????????????? ILayout->Release();?
??????????????????????? IImage->Release();?
??????????????????? }?
??????????????????? IImages->Release();?
??????????????? } else {?
??????????????????? bRet = FALSE;?
??????????????? }?
??????????? } else {?
??????????????? bRet = FALSE;?
??????????? }?
?????????????
??????????? IDobj->Close(0);?
??????????? IDobj->Release();?
??????????? pVal->Release();?
?????????
??????? } else {?
??????????? bRet = FALSE;?
??????? }?
??????? pVal??? = NULL;?
??????? IDobj?? = NULL;?
??????? ILayout = NULL;?
??????? IImages = NULL;?
??????? IImage? = NULL;?
??????? IWords? = NULL;?
??????? IWord?? = NULL;?
??? }?
??? catch(...)?
??? {?
??? }?
??? return bRet;?
}?

?此時VC編譯器會顯示IID_IDocument未聲明，后面編輯MDIVWCTL.tlh即可。

3）雙擊OCR按鈕，寫入響應(yīng)函數(shù)，調(diào)用識別函數(shù)：

?

void COCRDlg::OnBtnOCR()
{
?// TODO: Add your control notification handler code here
?CString csText;?
??? CString csFilePath;?
??? GetDlgItemText(IDC_STATIC_PATH,csFilePath);?
?????
??? if ( bReadOCRByMODIAXCtrl(csFilePath,csText) == TRUE )?
??? {?
??????? SetDlgItemText(IDC_EDIT_TEXT,csText);?
??? }else??
??????? SetDlgItemText(IDC_EDIT_TEXT,"ERROR");???

}

?

4）解決IID_IDocument未聲明的問題，編輯MDIVWCTL.tlh，在在最后#pragma pack(pop)之前加入如下：

??? //??
// Named GUID constants initializations??
//??
extern "C" const GUID __declspec(selectany) LIBID_MODI =?
{0xa5ededf4,0x2bbc,0x45f3,{0x82,0x2b,0xe6,0x0c,0x27,0x8a,0x1a,0x79}};?
extern "C" const GUID __declspec(selectany) IID_IMiFont =?
{0x1ffc9a7b,0x7606,0x4c97,{0x81,0x19,0x78,0x67,0x3e,0x9d,0x48,0x21}};?
extern "C" const GUID __declspec(selectany) IID_IMiRect =?
{0x87d6fb47,0x7cfa,0x4db3,{0x82,0xcd,0xe8,0xdc,0xc5,0xbd,0xa7,0xab}};?
extern "C" const GUID __declspec(selectany) IID_IMiRects =?
{0x895c88a9,0x8598,0x44cc,{0x91,0xc4,0x80,0x10,0xae,0x24,0x75,0xeb}};?
extern "C" const GUID __declspec(selectany) IID_IWord =?
{0x5612275b,0xb4f1,0x42af,{0xb6,0x96,0x36,0x0d,0x40,0xdf,0x04,0x1d}};?
extern "C" const GUID __declspec(selectany) IID_IWords =?
{0xd8363824,0x4b07,0x423b,{0x88,0x03,0x49,0xb4,0x70,0x43,0x4f,0x3d}};?
extern "C" const GUID __declspec(selectany) IID_ILayout =?
{0xc300c846,0xa3fd,0x4a5b,{0xad,0x65,0x4a,0x6a,0xb4,0x6b,0x78,0x21}};?
extern "C" const GUID __declspec(selectany) IID_IImage =?
{0xac0d48a6,0x886d,0x4eb5,{0xa8,0xa1,0x09,0x3d,0x60,0xb9,0xa8,0x4a}};?
extern "C" const GUID __declspec(selectany) IID_IImages =?
{0x77096557,0x54ca,0x45c8,{0x81,0xc9,0xe7,0x0c,0x2a,0xba,0xa0,0xfb}};?
extern "C" const GUID __declspec(selectany) IID_IDocument =?
{0xd4073843,0xa58a,0x469a,{0xa8,0xe2,0xcf,0xf3,0xff,0x77,0xee,0x4e}};?
extern "C" const GUID __declspec(selectany) DIID__IDocumentEvents =?
{0x0cf31963,0x5e4d,0x4772,{0xae,0x8d,0x82,0xfe,0x5a,0x08,0x2b,0x26}};?
extern "C" const GUID __declspec(selectany) CLSID_Document =?
{0x40942a6c,0x1520,0x4132,{0xbd,0xf8,0xbd,0xc1,0xf7,0x1f,0x54,0x7b}};?
extern "C" const GUID __declspec(selectany) CLSID_Layout =?
{0x1afc4117,0x128e,0x4314,{0x9d,0x53,0x64,0xcb,0xda,0x5c,0x7e,0x02}};?
extern "C" const GUID __declspec(selectany) DIID__IImageEvents =?
{0x99f3a122,0x448f,0x4d36,{0x82,0x43,0x48,0xbf,0xe3,0x2d,0x50,0xb2}};?
extern "C" const GUID __declspec(selectany) CLSID_Image =?
{0x56f963ec,0x6efc,0x4a6b,{0x9a,0x1e,0x5b,0xfe,0x54,0x5c,0x89,0xd0}};?
extern "C" const GUID __declspec(selectany) CLSID_Word =?
{0x5995e30f,0x59eb,0x42ae,{0xbd,0xcf,0x89,0x08,0x27,0x1c,0x0b,0x32}};?
extern "C" const GUID __declspec(selectany) CLSID_MiFont =?
{0xc5eae79b,0xaccc,0x4e51,{0x8e,0xd5,0xa1,0x6f,0x42,0xfb,0x7b,0x1f}};?
extern "C" const GUID __declspec(selectany) CLSID_Words =?
{0x72acbce3,0x9067,0x4d5e,{0x95,0x39,0x34,0x97,0xfe,0xcd,0x03,0x2d}};?
extern "C" const GUID __declspec(selectany) CLSID_Images =?
{0xf961d185,0x2cc1,0x43db,{0x80,0xab,0x56,0x7f,0xa1,0x02,0x51,0xec}};?
extern "C" const GUID __declspec(selectany) CLSID_MiRect =?
{0x00607e44,0x15df,0x49bc,{0xaf,0x0c,0xa9,0x02,0x3e,0x06,0x07,0x91}};?
extern "C" const GUID __declspec(selectany) CLSID_MiRects =?
{0xcb2fbd52,0x56c1,0x4dd8,{0x89,0x7f,0x96,0x1d,0x15,0x43,0xb8,0x77}};?
extern "C" const GUID __declspec(selectany) IID_IMiSelectRect =?
{0xea280c3c,0xe4b7,0x42bf,{0xac,0xc8,0xfe,0x3a,0xd3,0x58,0x16,0x38}};?
extern "C" const GUID __declspec(selectany) IID_IMiSelectRects =?
{0x3a1e1b7a,0xc041,0x4ddc,{0xbf,0x3b,0x04,0x2a,0x0b,0x95,0xb8,0x2b}};?
extern "C" const GUID __declspec(selectany) IID_IMiSelectableItem =?
{0x01c4414a,0xd123,0x4bc7,{0xa1,0xfa,0x64,0xe3,0x76,0xc0,0x16,0x55}};?
extern "C" const GUID __declspec(selectany) IID_IMiSelectableImage =?
{0xf6379198,0x3b20,0x461a,{0xb3,0xa9,0x19,0x19,0x45,0x75,0x25,0x57}};?
extern "C" const GUID __declspec(selectany) IID_IMiSearchCallback =?
{0x8376d508,0x78ca,0x416d,{0xa9,0x03,0x2e,0xd6,0x2e,0x91,0xe2,0x9b}};?
extern "C" const GUID __declspec(selectany) IID_IMiDocView =?
{0xf958524a,0x8422,0x4b07,{0xb6,0x9e,0x19,0x9f,0x24,0x21,0xed,0x89}};?
extern "C" const GUID __declspec(selectany) DIID__IMiDocViewEvents =?
{0x9028b775,0xec59,0x4118,{0x86,0x2a,0xef,0xde,0xaf,0x59,0x55,0xa4}};?
extern "C" const GUID __declspec(selectany) IID_IMiDocSearch =?
{0xbc06ed64,0xa40c,0x4fb4,{0xa6,0x60,0xac,0x6d,0xbc,0x75,0x22,0x92}};?
extern "C" const GUID __declspec(selectany) CLSID_MiDocView =?
{0xef347a62,0xba21,0x42e4,{0x94,0xa0,0x1c,0x0a,0x6d,0x7f,0xdf,0xe7}};?
extern "C" const GUID __declspec(selectany) CLSID_MiDocSearch =?
{0xfa554db9,0xc806,0x46a9,{0xae,0xf8,0xb5,0xaf,0x89,0x1a,0x94,0xf9}};?
extern "C" const GUID __declspec(selectany) CLSID_MiSelectRect =?
{0xa4d2b51f,0x809f,0x4c53,{0x91,0x47,0x55,0x16,0x87,0x18,0x16,0xbd}};?
extern "C" const GUID __declspec(selectany) CLSID_MiSelectRects =?
?{0x23e9e94b,0xc202,0x4e9c,{0x8c,0x2e,0xf5,0x3b,0xc5,0x36,0xff,0x1d}};?

這是office 2003生成的MDIVWCTL.tlh文件中存在的，但在office 2007生成的MDIVWCTL.tlh文件中缺失，因此要補上。

3.運行

運行程序，單擊Browse導(dǎo)入測試圖片，然后單擊OCR進(jìn)行光學(xué)字符識別，效果如圖

? ?

?

? ?

?? 特別說明：

?? 1）只能識別TIF格式圖片；

? ?2）僅對英文識別較為準(zhǔn)確；

總結(jié)

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