Tessnet2 协助

发布于 2024-09-27 03:08:46 字数 1559 浏览 3 评论 0原文

我需要建议。我正在尝试使用 Tessnet2 lib 来识别图像文本。

图像由一个包含五个字符（字符和数字）的字符串组成。

我从http://www.pixel-technology.com/freeware/tessnet2下载了lib /.
在我的项目中添加对此库的引用。
然后我下载了语言数据定义文件（来自 http://code .google.com/p/tesseract-ocr/downloads/list）并将其放入tessdata目录中。

数据定义文件与exe文件位于同一目录中。

这是我的代码：

try
{ //download image from server
    System.Net.WebRequest request =
        System.Net.WebRequest.Create(
        textBox1.Text);
    System.Net.WebResponse response = request.GetResponse();
    System.IO.Stream responseStream =
        response.GetResponseStream();
    Bitmap  image = new Bitmap(responseStream);

    pictureBox1.Image =image;

    tessnet2.Tesseract ocr = new tessnet2.Tesseract();

    ocr.SetVariable("tessedit_char_whitelist", "0123456789"); 

    ocr.Init(@"C:\Users\Tan\Documents\Visual Studio 2010\Projects\TestProject\bin\Release", "eng", false); // To use correct tessdata

    List<tessnet2.Word> result = ocr.DoOCR(image, Rectangle.Empty);
    foreach (tessnet2.Word word in result)
    {
        richTextBox1.Text = string.Format("{0} : {1}", word.Confidence, word.Text);
    }

}
catch (System.Net.WebException)
{
    MessageBox.Show("There was an error opening the image file."
       + "Check the URL");
}

问题是，如果我调用此代码，应用程序将关闭。我没有收到任何错误消息。我不明白为什么。有人可以帮助我吗？谢谢。

原文

I need advice. I am trying to use Tessnet2 lib to recognize text of image.

Image consist a string with five characters(chars and digit).

I downloaded lib from http://www.pixel-technology.com/freeware/tessnet2/.
Add refrence on this lib in my project.
Then I downloaded language data definition file (from http://code.google.com/p/tesseract-ocr/downloads/list)and put it in tessdata directory.

The data definition file is in same directory as exe file.

Here is my code:

try
{ //download image from server
    System.Net.WebRequest request =
        System.Net.WebRequest.Create(
        textBox1.Text);
    System.Net.WebResponse response = request.GetResponse();
    System.IO.Stream responseStream =
        response.GetResponseStream();
    Bitmap  image = new Bitmap(responseStream);

    pictureBox1.Image =image;

    tessnet2.Tesseract ocr = new tessnet2.Tesseract();

    ocr.SetVariable("tessedit_char_whitelist", "0123456789"); 

    ocr.Init(@"C:\Users\Tan\Documents\Visual Studio 2010\Projects\TestProject\bin\Release", "eng", false); // To use correct tessdata

    List<tessnet2.Word> result = ocr.DoOCR(image, Rectangle.Empty);
    foreach (tessnet2.Word word in result)
    {
        richTextBox1.Text = string.Format("{0} : {1}", word.Confidence, word.Text);
    }

}
catch (System.Net.WebException)
{
    MessageBox.Show("There was an error opening the image file."
       + "Check the URL");
}

Problem is, if I invoke this code, app is closed. I get nothing error message. I don’t why.
Can anybody help me? Thank you.

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