CSharp: Tesseract OCR V5.0 in donet core 3.1

Reference resources
https://github.com/alex-doe/open-ocr-dotnet
https://github.com/tleyden/open-ocr/ go
https://github.com/DayBreak-u/chineseocr_lite
https://github.com/pjreddie/darknet
https://sourceforge.net/projects/vietocr/
https://github.com/PaddlePaddle/PaddleOCR
https://github.com/gumblex/tessdata_chi
https://github.com/nobody132/masr
https://code.google.com/p/tesseractdotnet
https://github.com/tesseract-ocr/tesseract
https://github.com/tesseract-ocr/tessdata
https://github.com/charlesw/tesseract
https://github.com/charlesw/tesseract-samples
https://github.com/tesseract-ocr/langdata

 

 

 

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/// <summary>   /// https://tesseract-ocr.github.io/tessdoc/Data-Files   /// geovindu,Geovin Du   /// </summary>   public enum LanguangeList   {       /// <summary>       /// Afrikaans   afr.traineddata       /// </summary>       afr,           /// <summary>       /// Amharic amh.traineddata       /// </summary>       amh,           /// <summary>       /// Arabic  ara.traineddata       /// </summary>       ara,           /// <summary>       /// Assamese    asm.traineddata       /// </summary>       asm,           /// <summary>       /// Azerbaijani aze.traineddata       /// </summary>       aze,           /// <summary>       /// Azerbaijani - Cyrillic  aze_cyrl.traineddata       /// </summary>       aze_cyrl,           /// <summary>       /// Belarusian  bel.traineddata       /// </summary>       bel,           /// <summary>       /// Bengali ben.traineddata       /// </summary>       ben,       /// <summary>       /// Tibetan bod.traineddata       /// </summary>       bod,           /// <summary>       /// Bosnian bos.traineddata       /// </summary>       bos,           /// <summary>       /// Bulgarian   bul.traineddata       /// </summary>       bul,           /// <summary>       /// Catalan; Valencian  cat.traineddata       /// </summary>       cat,           /// <summary>       /// Cebuano ceb.traineddata       /// </summary>       ceb,           /// <summary>       /// Czech   ces.traineddata       /// </summary>       ces,           /// <summary>       /// 简体中文       /// Chinese - Simplified    chi_sim.traineddata       /// </summary>       chi_sim,           /// <summary>       /// 繁体中文       /// Chinese - Traditional   chi_tra.traineddata       /// </summary>       chi_tra,           /// <summary>       /// Cherokee    chr.traineddata       /// </summary>       chr,           /// <summary>       /// Welsh   cym.traineddata       /// </summary>       cym,           /// <summary>       /// Danish  dan.traineddata       /// </summary>       dan,           /// <summary>       /// German  deu.traineddata       /// </summary>       deu,           /// <summary>       /// Dzongkha    dzo.traineddata       /// </summary>       dzo,           /// <summary>       /// Greek, Modern (1453-)   ell.traineddata       /// </summary>       ell,           /// <summary>       /// English eng.traineddata       /// </summary>       eng,           /// <summary>       /// English, Middle (1100-1500) enm.traineddata       /// </summary>       enm,           /// <summary>       /// Esperanto   epo.traineddata       /// </summary>       epo,           /// <summary>       /// Estonian    est.traineddata       /// </summary>       est,           /// <summary>       /// Basque  eus.traineddata       /// </summary>       eus,           /// <summary>       /// Persian fas.traineddata       /// </summary>       fas,           /// <summary>       /// Finnish fin.traineddata       /// </summary>       fin,           /// <summary>       /// French  fra.traineddata       /// </summary>       fra,           /// <summary>       /// German Fraktur  frk.traineddata       /// </summary>       frk,           /// <summary>       /// French, Middle (ca. 1400-1600)  frm.traineddata       /// </summary>       frm,           /// <summary>       /// Irish   gle.traineddata       /// </summary>       gle,           /// <summary>       /// Galician    glg.traineddata       /// </summary>       glg,           /// <summary>       /// Greek, Ancient (-1453)  grc.traineddata       /// </summary>       grc,           /// <summary>       /// Gujarati    guj.traineddata       /// </summary>       guj,           /// <summary>       /// Haitian; Haitian Creole hat.traineddata       /// </summary>       hat,           /// <summary>       /// Hebrew  heb.traineddata       /// </summary>       heb,           /// <summary>       /// Hindi   hin.traineddata       /// </summary>       hin,           /// <summary>       /// Croatian    hrv.traineddata       /// </summary>       hrv,           /// <summary>       /// Hungarian   hun.traineddata       /// </summary>       hun,           /// <summary>       /// Inuktitut   iku.traineddata       /// </summary>       iku,           /// <summary>       /// Indonesian  ind.traineddata       /// </summary>       ind,           /// <summary>       /// Icelandic   isl.traineddata       /// </summary>       isl,           /// <summary>       /// Italian ita.traineddata       /// </summary>       ita,           /// <summary>       /// Italian - Old   ita_old.traineddata       /// </summary>       ita_old,           /// <summary>       /// Javanese    jav.traineddata       /// </summary>       jav,           /// <summary>       /// Japanese    jpn.traineddata       /// </summary>       jpn,           /// <summary>       /// Kannada kan.traineddata       /// </summary>       kan,           /// <summary>       /// Georgian    kat.traineddata       /// </summary>       kat,           /// <summary>       /// Georgian - Old  kat_old.traineddata       /// </summary>       kat_old,           /// <summary>       /// Kazakh  kaz.traineddata       /// </summary>       kaz,           /// <summary>       /// Central Khmer   khm.traineddata       /// </summary>       khm,           /// <summary>       /// Kirghiz; Kyrgyz kir.traineddata       /// </summary>       kir,           /// <summary>       /// Korean  kor.traineddata       /// </summary>       kor,           /// <summary>       /// Kurdish kur.traineddata       /// </summary>       kur,           /// <summary>       /// Lao lao.traineddata       /// </summary>       lao,           /// <summary>       /// Latin   lat.traineddata       /// </summary>       lat,         /// <summary>       /// Latvian lav.traineddata       /// </summary>       lav,         /// <summary>       /// Lithuanian  lit.traineddata       /// </summary>       lit,         /// <summary>       /// Malayalam   mal.traineddata       /// </summary>       mal,         /// <summary>       /// Marathi mar.traineddata       /// </summary>       mar,         /// <summary>       /// Macedonian  mkd.traineddata       /// </summary>       mkd,           /// <summary>       /// Maltese mlt.traineddata       /// </summary>       mlt,           /// <summary>       /// Malay   msa.traineddata       /// </summary>       msa,           /// <summary>       /// Burmese mya.traineddata       /// </summary>       mya,           /// <summary>       /// Nepali  nep.traineddata       /// </summary>       nep,           /// <summary>       /// Dutch; Flemish  nld.traineddata       /// </summary>       nld,           /// <summary>       /// Norwegian   nor.traineddata       /// </summary>       nor,           /// <summary>       /// Oriya   ori.traineddata       /// </summary>       ori,           /// <summary>       /// Panjabi; Punjabi    pan.traineddata       /// </summary>       pan,           /// <summary>       /// Polish  pol.traineddata       /// </summary>       pol,           /// <summary>       /// Portuguese  por.traineddata       /// </summary>       por,           /// <summary>       /// Pushto; Pashto  pus.traineddata       /// </summary>       pus,           /// <summary>       /// Romanian; Moldavian; Moldovan   ron.traineddata       /// </summary>       ron,           /// <summary>       /// Russian rus.traineddata       /// </summary>       rus,           /// <summary>       /// Sanskrit    san.traineddata       /// </summary>       san,           /// <summary>       /// Sinhala; Sinhalese  sin.traineddata       /// </summary>       sin,           /// <summary>       /// Slovak  slk.traineddata       /// </summary>       slk,           /// <summary>       /// Slovenian   slv.traineddata       /// </summary>       slv,           /// <summary>       /// Spanish; Castilian  spa.traineddata       /// </summary>       spa,           /// <summary>       /// Spanish; Castilian - Old    spa_old.traineddata       /// </summary>       spa_old,           /// <summary>       /// Albanian    sqi.traineddata       /// </summary>       sqi,           /// <summary>       /// Serbian srp.traineddata       /// </summary>       srp,           /// <summary>       /// Serbian - Latin srp_latn.traineddata       /// </summary>       srp_latn,           /// <summary>       /// Swahili swa.traineddata       /// </summary>       swa,           /// <summary>       /// Swedish swe.traineddata       /// </summary>       swe,           /// <summary>       /// Syriac  syr.traineddata       /// </summary>       syr,           /// <summary>       /// Tamil   tam.traineddata       /// </summary>       tam,           /// <summary>       /// Telugu  tel.traineddata       /// </summary>       tel,           /// <summary>       /// Tajik   tgk.traineddata       /// </summary>       tgk,           /// <summary>       /// Tagalog tgl.traineddata       /// </summary>       tgl,           /// <summary>       /// Thai    tha.traineddata       /// </summary>       tha,           /// <summary>       /// Tigrinya    tir.traineddata       /// </summary>       tir,           /// <summary>       /// Turkish tur.traineddata       /// </summary>       tur,           /// <summary>       /// Uighur; Uyghur  uig.traineddata       /// </summary>       uig,           /// <summary>       /// Ukrainian   ukr.traineddata       /// </summary>       ukr,           /// <summary>       /// Urdu    urd.traineddata       /// </summary>       urd,           /// <summary>       /// Uzbek   uzb.traineddata       /// </summary>       uzb,           /// <summary>       /// Uzbek - Cyrillic    uzb_cyrl.traineddata       /// </summary>       uzb_cyrl,           /// <summary>       /// Vietnamese  vie.traineddata       /// </summary>       vie,           /// <summary>       /// Yiddish yid.traineddata       /// </summary>       yid     }

　

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/// <summary>    ///    /// </summary>    internal class Program    {          /// <summary>        /// https://tesseract-ocr.github.io/tessdoc/Data-Files        /// https://github.com/charlesw/tesseract-samples        /// https://github.com/tesseract-ocr/tessdata        /// https://github.com/danbloomberg/leptonica/releases        /// </summary>        /// <param name="args"></param>        public static void Main(string[] args)        {            var testImagePath = "./geovindu2.jpg"; //phototest.tif            if (args.Length > 0)            {                testImagePath = args[0];            }              try            {                using (var engine = new TesseractEngine(@"./tessdata", LanguangeList.chi_sim.ToString(), EngineMode.Default))  //chi_tra //eng //                 {                    using (var img = Pix.LoadFromFile(testImagePath))                    {                        using (var page = engine.Process(img))                        {                            var text = page.GetText();                            Console.WriteLine("Mean confidence: {0}", page.GetMeanConfidence());                              Console.WriteLine("Text (GetText): \r\n{0}", text);                            Console.WriteLine("Text (iterator):");                            using (var iter = page.GetIterator())                            {                                iter.Begin();                                  do                                {                                    do                                    {                                        do                                        {                                            do                                            {                                                if (iter.IsAtBeginningOf(PageIteratorLevel.Block))                                                {                                                    Console.WriteLine("<BLOCK>");                                                }                                                  Console.Write(iter.GetText(PageIteratorLevel.Word));                                                Console.Write(" ");                                                  if (iter.IsAtFinalOf(PageIteratorLevel.TextLine, PageIteratorLevel.Word))                                                {                                                    Console.WriteLine();                                                }                                            } while (iter.Next(PageIteratorLevel.TextLine, PageIteratorLevel.Word));                                              if (iter.IsAtFinalOf(PageIteratorLevel.Para, PageIteratorLevel.TextLine))                                            {                                                Console.WriteLine();                                            }                                        } while (iter.Next(PageIteratorLevel.Para, PageIteratorLevel.TextLine));                                    } while (iter.Next(PageIteratorLevel.Block, PageIteratorLevel.Para));                                } while (iter.Next(PageIteratorLevel.Block));                            }                        }                    }                }            }            catch (Exception e)            {                Trace.TraceError(e.ToString());                Console.WriteLine("Unexpected Error: " + e.Message);                Console.WriteLine("Details: ");                Console.WriteLine(e.ToString());            }            Console.Write("Press any key to continue . . . ");            Console.ReadKey(true);        }    }

　　

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/// <summary>   /// Description of MainForm.   /// 引用 leptonica-1.82.0.dll   /// geovindu,Geovin Du   /// </summary>   public class DefaultPage : System.Web.UI.Page   {         #region Data         // input panel controls         protected Panel inputPanel;       protected HtmlInputFile imageFile;       protected HtmlButton submitFile;         // result panel controls       protected Panel resultPanel;       protected HtmlGenericControl meanConfidenceLabel;       protected HtmlTextArea resultText;       protected HtmlButton restartButton;           #endregion         #region Event Handlers         private void OnSubmitFileClicked(object sender, EventArgs args)       {           if (imageFile.PostedFile != null && imageFile.PostedFile.ContentLength > 0)           {               // for now just fail hard if there's any error however in a propper app I would expect a full demo.               //chi_sim  https://tesseract-ocr.github.io/tessdoc/Data-Files               using (var engine = new TesseractEngine(Server.MapPath(@"~/tessdata"), LanguangeList.chi_sim.ToString(), EngineMode.Default))//eng  //chi_sim               {                   // have to load Pix via a bitmap since Pix doesn't support loading a stream.                   using (var image = new System.Drawing.Bitmap(imageFile.PostedFile.InputStream))                   {                       using (var pix = PixConverter.ToPix(image))                       {                           using (var page = engine.Process(pix))                           {                               meanConfidenceLabel.InnerText = String.Format("{0:P}", page.GetMeanConfidence());                               resultText.InnerText = page.GetText();                           }                       }                   }               }               inputPanel.Visible = false;               resultPanel.Visible = true;           }       }         private void OnRestartClicked(object sender, EventArgs args)       {           resultPanel.Visible = false;           inputPanel.Visible = true;       }         #endregion         #region Page Setup       protected override void OnInit(EventArgs e)       {           InitializeComponent();           base.OnInit(e);       }         //----------------------------------------------------------------------       private void InitializeComponent()       {           this.restartButton.ServerClick += OnRestartClicked;           this.submitFile.ServerClick += OnSubmitFileClicked;       }         #endregion   }

　　

输出：

 

 

　

 

GPTs are GPTs: An Early Look at the Labor Market Impact Potential of Large Language Models
https://arxiv.org/pdf/2303.10130.pdf

Sparks of Artificial General Intelligence: Early experiments with GPT-4
https://arxiv.org/abs/2303.12712
https://arxiv.org/pdf/2303.12712.pdf