学步园

转载地址:http://www.cnblogs.com/xuneng/archive/2008/07/31/1257448.html

先确保的是你要装上这个组件Microsoft Office Document Imaging 12.0 Type Library或者Microsoft Office Document Imaging 11.0 Type Library

装好后项目里添加引用这个com就可以了

它识别英文和中文的正确率都还不错。要注意的是：如果要识别简体中文，你必须下载安装中文简体OCR引擎，微软官方下载地址：中文简体OCR引擎

以下是识别的核心代码

 MODI.Document md = new MODI.Document();
            md.Create(Directory.GetCurrentDirectory() + "\\SampleForOCR.tiff");
            md.OCR(MODI.MiLANGUAGES.miLANG_ENGLISH, true, true);

            MODI.Image image = (MODI.Image)md.Images[0];
            MODI.Layout layout = image.Layout;

            MODI.Word word;
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < layout.Words.Count;i++ )
            {
                word = (MODI.Word)layout.Words[i];
                sb.Append(word.Text);
            }

Bitmap bitmap = new Bitmap(100, 100);
            bitmap.Save("somefilename", ImageFormat.Tiff);

Graphics g = Graphics.FromImage(m_WindowDlg.m_objBitmap);
            // Copy the screen into the bitmap object.
            g.CopyFromScreen(0, 0, 0, 0, new Size(w, h));

// Make sure we clicked the mouse button and
            //   have a starting coordinate.
            if (m_nStartX != -1)
            {
                // Get the graphcis object from this window.
                Graphics g = Graphics.FromHwnd(Handle);

                // Check to see if we need to restore the
                //   screen from a previous rectangle draw.
                if (m_nLastX != -1)
                {
                    // Create a rectangle with which to clip.
                    //   Note that we are 3 pixels to the left
                    //   and 3 pixels to the right so that we
                    //   can take the width of the line into
                    //   account.
                    Rectangle rc = new Rectangle(m_nLastX-3, m_nLastY-3,
                        m_nLastWidth+6, m_nLastHeight+6);
                    g.SetClip(rc);
                    g.DrawImage(m_objBitmap, 0, 0);
                    g.ResetClip();
                }

                // Here we set some local variables just
                //   in case we have to swap the values.
                int nStartX = m_nStartX;
                int nStartY = m_nStartY;

                // Get and record our current mouse position.
                int nEndX = e.X;
                int nEndY = e.Y;

                // Calculate width and height.
                int nWidth = Math.Abs(nStartX - nEndX);
                int nHeight = Math.Abs(nStartY - nEndY);

                // We may need to swap values if user went
                //   left from the start position.
                if (nEndX < nStartX)
                {
                    int i = nStartX;
                    nStartX = nEndX;
                    nEndX = i;
                }
                // We may need to swap values if user went
                //   up from the start position.
                if (nEndY < nStartY)
                {
                    int i = nStartY;
                    nStartY = nEndY;
                    nEndY = i;
                }

                // Draw the rectangle.
                g.DrawRectangle(new Pen(Color.Black, 3),
                    nStartX, nStartY, nWidth, nHeight);

                // Record the operation so that we can restore
                //   when the mouse moves, and also give values
                //   to the EndCapture method.
                m_nLastX = nStartX;
                m_nLastY = nStartY;
                m_nLastWidth = nWidth;
                m_nLastHeight = nHeight;