[C#/WINFORM/EMGUCV] Tesseract OCR 문자 인식하기
■ Tesseract OCR 문자를 인식하는 방법을 보여준다. ▶ MainForm.cs
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using System; using System.Drawing; using System.IO; using System.Windows.Forms; using Emgu.CV; using Emgu.CV.OCR; using Emgu.CV.Structure; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// TESSERACT /// </summary> private Tesseract tesseract; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.tesseract = new Tesseract("", "eng", Tesseract.OcrEngineMode.OEM_TESSERACT_CUBE_COMBINED); this.languageValueLabel.Text = "eng : tesseract + cube"; this.loadLanguageMenuItem.Click += loadLanguageMenuItem_Click; this.loadImageButton.Click += loadImageButton_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 언어 로드 메뉴 항목 클릭시 처리하기 - loadLanguageMenuItem_Click(sender, e) /// <summary> /// 언어 로드 메뉴 항목 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void loadLanguageMenuItem_Click(object sender, EventArgs e) { if(this.languageOpenFileDialog.ShowDialog() == DialogResult.OK) { this.tesseract.Dispose(); string filePath = Path.GetDirectoryName(this.languageOpenFileDialog.FileName); string language = Path.GetFileNameWithoutExtension(this.languageOpenFileDialog.FileName).Split('.')[0]; this.tesseract = new Tesseract(filePath, language, Tesseract.OcrEngineMode.OEM_DEFAULT); this.languageValueLabel.Text = String.Format("{0} : tesseract", language); } } #endregion #region 이미지 로드 버튼 클릭시 처리하기 - loadImageButton_Click(sender, e) /// <summary> /// 이미지 로드 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void loadImageButton_Click(object sender, EventArgs e) { if(this.imageOpenFileDialog.ShowDialog() == DialogResult.OK) { Bgr blueBgr = new Bgr(Color.Blue); try { Image<Bgr, Byte> image = new Image<Bgr, byte>(this.imageOpenFileDialog.FileName); using(Image<Gray, byte> grayImage = image.Convert<Gray, Byte>()) { this.tesseract.Recognize(grayImage); Tesseract.Charactor[] charactorArray = this.tesseract.GetCharactors(); foreach(Tesseract.Charactor character in charactorArray) { image.Draw(character.Region, blueBgr, 1); } this.imageBox.Image = image; string result = this.tesseract.GetText(); this.resultTextBox.Text = result; } } catch(Exception exception) { MessageBox.Show(exception.Message); } } } #endregion } } |
TestProject.zip