Tesseract Init()方法C3

Question

我在c# .net 4.5中使用Tesseract 2，只要代码到达OCR.InIt()方法，它就会从代码中出来，程序就会停止执行。即使Catch块也不保存代码。请告诉我如何检查这个问题。

Bitmap image = new Bitmap(ofd_OpenPhoto.FileName);
tessnet2.Tesseract ocr = new tessnet2.Tesseract();
ocr.Init("C:\\tessnet2\\tesseract-ocr\\tessdata", "eng", false);

请告诉我，如何使用Init()方法，我应该删除null吗？

private void btn_Browse_Click(object sender, EventArgs e)
        {
            ofd_OpenPhoto.Multiselect = false;
            ofd_OpenPhoto.RestoreDirectory = true;
            ofd_OpenPhoto.SupportMultiDottedExtensions = false;
            ofd_OpenPhoto.FileName = "";
            ofd_OpenPhoto.Title = "Select Photo";
            ofd_OpenPhoto.Filter = "Photo Files (*.jpg)|*.jpg";

            DialogResult result = ofd_OpenPhoto.ShowDialog();

            if (result == System.Windows.Forms.DialogResult.OK)
            {
                string file_name;
                if (ofd_OpenPhoto.FileName != null)
                {
                    try
                    {
                        file_name = ofd_OpenPhoto.FileName.Substring(ofd_OpenPhoto.FileName.LastIndexOf("\\") + 1);
                        txt_PhotoPath.Text = file_name.Substring(0, file_name.LastIndexOf("."));

                        Emgu.CV.Image<Bgr, Byte> img_o = new Emgu.CV.Image<Bgr, byte>(ofd_OpenPhoto.FileName);
                        pb_PhotoViewer_O.Image = img_o.ToBitmap();
                        if (pb_PhotoViewer_O.Image != null)
                        {
                            try
                            {
                                Bitmap image = new Bitmap(ofd_OpenPhoto.FileName);
                                tessnet2.Tesseract ocr = new tessnet2.Tesseract();
                                ocr.SetVariable("tessedit_char_whitelist", "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
                                ocr.Init(@"C:\\Program Files (x86)\\Tesseract-OCR", "eng", false);
                                List<tessnet2.Word> result1 = ocr.DoOCR(image, Rectangle.Empty);
                                txt_ExtractedNumber.Text = result1.ToString();
                            }
                            catch (Exception ex)
                            {

                            }
                        }
                    }
                    catch (Exception ex)
                    {
                        //e.Message();
                    }
                }
            }
        }

这是我的密码。谢谢。

Answer 1

如果您编写ocr.Init("C:\\tessnet2\\tesseract-ocr\\tessdata", "eng", false);，那么在C：\tessnet2 2\tesseract-ocr\tessdata目录下必须有下一个文件：

• eng.DangAmbigs
• eng.freq-dawg
• eng.inttemp
• eng.normproto
• eng.pffmtable
• eng.unicharset
• eng.user-words
• eng.word-dawg

还必须检查是否删除了Windows环境变量( TESSDATA_PREFIX )