天天向上

   1: #region Image

   2: private ImageBW8 m_Source = new ImageBW8();

   3: private ROIBW8 m_Roi = new ROIBW8();

   4: #endregion

   5: #region OCR

   6: private Euresys.eVision.Ocr m_Ocr = new Ocr();

   7: private string m_OcrText = "";

   8: private bool m_bRead = false;

   9: private DragHandle m_Handle = DragHandle.NoHandle;

  10: #endregion

  11: #region Font

  12: private Font m_Font = new Font("Arial", 9);

  13: #endregion

  14: #region Pen

  15: private Pen m_RedPen = new Pen(Color.Red);

  16: private Pen m_GreenPen = new Pen(Color.FromArgb(0, 255, 0));

  17: #endregion

  18: #region Brush

  19: private Brush m_BlackBrush = new SolidBrush(Color.Black);

  20: private Brush m_WhiteBrush = new SolidBrush(Color.White);

  21: #endregion

   1: #region Subroutine

   2:       private void Redraw(Graphics g)

   3:       {

   4:           if (m_Source.Void)   // if (m_Source==null) then m_Source.Void return true   

   5:               return;

   6:  

   7:           // Display the source image

   8:           m_Source.Draw(g);

   9:  

  10:           // Draw the roi frame with its handles

  11:           m_Roi.DrawFrame(g, m_RedPen, FramePosition.On, true);

  12:  

  13:           // Draw the character bounding boxes if needed

  14:           if (m_bRead)

  15:           {

  16:               m_Ocr.DrawChars(g, m_GreenPen);

  17:  

  18:               // Display recognised text at (20, 20)

  19:               DrawBackedText(g, m_OcrText, 20, 20);

  20:           }

  21:       }

  22:       #region draw characters on the graphics

  23:       /* 根據傳入text, 先計算所需的包覆矩形大小size

  24:        * 白底黑字 FillRectangle & DrawString

  25:        */

  26:       private void DrawBackedText(Graphics g, string text, int x, int y)

  27:       {

  28:           SizeF size = g.MeasureString(text, m_Font);

  29:           g.FillRectangle(m_WhiteBrush, x, y, size.Width, size.Height);

  30:           g.DrawString(text, m_Font, m_BlackBrush, x, y);

  31:       }

  32:       #endregion

  33:      

  34:       #endregion

   1: this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseDown);

   2: this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseMove);

   3: this.MouseUp += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseUp);

   1: private void Form1_MouseDown(object sender, MouseEventArgs e)

   2: {

   3:     m_Handle = m_Roi.HitTest(e.X, e.Y);

   4: }

   1: private void Form1_MouseMove(object sender, MouseEventArgs e)

   2: {

   3:     if (m_Handle != DragHandle.NoHandle)

   4:     {

   5:         m_Roi.Drag(m_Handle, e.X, e.Y);

   6:         Redraw(CreateGraphics());

   7:     }

   8: }

   1: private void Form1_MouseUp(object sender, MouseEventArgs e)

   2:  {

   3:      m_Handle = DragHandle.NoHandle;

   4:  }

   1: openFileDialog1.Filter = "OCR font files (*.ocr)|*.ocr";

   2:             if (openFileDialog1.ShowDialog() == DialogResult.Cancel)

   3:                 return;

   4:             try

   5:             {

   6:                 m_Ocr.Load(openFileDialog1.FileName);    

   7:             }

   8:             catch( Euresys.eVisionException exc)

   9:             {

  10:                 MessageBox.Show(exc.Message);

  11:             }

  12:  

  13:             // Refresh form

  14:             Refresh();

   1: private void readToolStripMenuItem_Click(object sender, EventArgs e)

   2:         {

   3:             if (m_Source.Void)

   4:                 return;

   5:             m_Ocr.Threshold = ThresholdMode.MinResidue;

   6:  

   7:             try

   8:             {

   9:                 // Perform character detection

  10:                 m_Ocr.BuildObjects(m_Roi);

  11:                 m_Ocr.MinCharWidth = 28;

  12:                 m_Ocr.FindAllChars(m_Roi);

  13:  

  14:                 // Perform recognition

  15:                 System.Int32 classes = (int)EasyOcr.Class.AllClasses;

  16:                 m_Ocr.Recognize(m_Roi, 256, classes, ref m_OcrText);

  17:  

  18:                 // Enable the displaying

  19:                 m_bRead = true;

  20:             }

  21:             catch (Euresys.eVisionException exc)

  22:             {

  23:                 MessageBox.Show(exc.Message);

  24:             }

  25:  

  26:             // Force a redraw

  27:             Refresh();

  28:         }