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);
}
sb.ToString就可以得到了
圖片轉成 tiff
Bitmap bitmap = new Bitmap(100, 100);
bitmap.Save("somefilename", ImageFormat.Tiff);
如何進行截屏呢?
拷屏.先把整個屏幕的圖像拷過來(其它地方也會用到這個.比如做一個操作動作的外掛等)
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));
指定區域是利用
另一個窗口來的..把這個窗口的透明屬性opacity設爲100%這樣人家就看不到了.
然後利用 MouseDown 畫出我們截屏的範圍 和 mouseUP事件.
mouseUP後引發一個完成的事件.並通知座標大小
主要代碼
// 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;
g.DrawRectangle(new Pen(Color.Red, 1), 這個改成紅色一個像素看起來更舒服,這個函數是鼠標一移動都會被調用的.
static extern string craboOCR(string file, int type);
{
if(File.Exists(_imgPath))//ok now?
{
try
{
this.picbVeryfyCode.Image=System.Drawing.Bitmap.FromFile(_imgPath);
_veryfyCode=craboOCR(_imgPath,-1); //將返回string,並以"\r\n"結尾!!
_veryfyCode=_veryfyCode.Substring(0,4);
this.txtVeryfyCode.Text=_veryfyCode;
}
catch(Exception e)
{
this.lblResult.Text+=e.Message;
}
}
}
{
tessnet2.Tesseractocr=newtessnet2.Tesseract();//聲明一個OCR類
stringdefaultCharList="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-";
if(!string.IsNullOrEmpty(txtCharList.Text))
{
defaultCharList=txtCharList.Text;
}
ocr.SetVariable("tessedit_char_whitelist", defaultCharList);//設置識別變量，當前只能識別數字及英文字符。
ocr.Init(Application.StartupPath+@"\tessdata","eng",false);//應用當前語言包。注，Tessnet2是支持多國語的。語言包下載鏈接：http://code.google.com/p/tesseract-ocr/downloads/list
WebClient wc=newWebClient();
byte[]oimg=wc.DownloadData(txtImageUrl.Text);// 自己修改成要識別的地址吧
Bitmap bp=newBitmap(newMemoryStream(oimg),true);//識別圖像
Bitmap bp2=newBitmap(newMemoryStream(oimg),true);
picBox1.Image=bp2;
//bp = ImageProcess.RemoveGreen(bp);
//bp = ImageProcess.ToBW(bp);
picBox2.Image=bp;
List<tessnet2.Word>result=newList<tessnet2.Word>();
stringtxt="";
try
{
result=ocr.DoOCR(bp, Rectangle.Empty);//執行識別操作
foreach(tessnet2.Wordwordinresult)//遍歷識別結果。
{
txt+=word.Text;
}
}
catch(Exception ex)
{
}
if(string.IsNullOrEmpty(txt)||txt=="~")
{
#region 如圖片太小，無法識別，則先放大
intw=bp.Width>=100?bp.Width:100;
inth=bp.Height>=30?bp.Height:30;
Bitmap resizedBmp=newBitmap(w, h);
Graphics g=Graphics.FromImage(resizedBmp);
g.DrawImage(bp,newRectangle(0,0, w, h),newRectangle(0,0, bp.Width, bp.Height), GraphicsUnit.Pixel);
bp=resizedBmp;
#endregion
picBox2.Image=bp;
result=ocr.DoOCR(bp, Rectangle.Empty);//執行識別操作
txt="";
foreach(tessnet2.Wordwordinresult)//遍歷識別結果。
{
txt+=word.Text;
}
}
textBox1.Text=txt;
}
