formmain.cs

ocr samples for use with .net c#

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.OleDb;

namespace OCR
{

	struct Suited
	{
		public string Character;  //字符名
		public int MaxMatch;	  //匹配率
		public float MaxUseCount;	  //使用频率

		public Suited(string Character,int MaxMatch,float MaxUseCount)
		{
			this.Character = Character;
			this.MaxMatch = MaxMatch;
			this.MaxUseCount = MaxUseCount;
		}
	}

	/// <summary>
	/// OCR 的摘要说明。
	/// </summary>
	public class FormMain : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label TeachLabelText;
		private System.Windows.Forms.TextBox inputLearnCharacter;
		private System.Windows.Forms.Button buttonLearnConfirm;
		private System.Windows.Forms.Button buttonLearnCancel;
		private System.Windows.Forms.Label textResult;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		string strCaption = ""; 
		bool currentlyDrawing = false; 

		Bitmap userDrawAreaBmp;
		Bitmap userTemplateAreaBmp;

		ArrayList arrCurrentEigenvalue ;
		ArrayList resultList ;
		OleDbConnection DbConn ;
		OleDbCommand DbCmd ;

		public int SplitWidth = 20;
		public int SplitHeight = 20;
		public Size PointSize = new Size(10,10);

		private System.Windows.Forms.GroupBox frameArea1;
		private System.Windows.Forms.GroupBox frameArea3;
		private System.Windows.Forms.PictureBox userDrawArea;
		private System.Windows.Forms.Button buttonRecognise;
		private System.Windows.Forms.Button buttonClearScreen;
		private System.Windows.Forms.PictureBox userTemplateArea;
		private System.Windows.Forms.ListBox ResultList;
		private System.Windows.Forms.ProgressBar progressRecognition;
		private System.Windows.Forms.Label progressText;
		private System.Windows.Forms.Label resultText;
		private System.Windows.Forms.TrackBar precisionTrackBar;
		private System.Windows.Forms.Button AutoLearn;
		private System.Windows.Forms.OpenFileDialog openFileDialog1;
		private System.Windows.Forms.Button btnBreak;
		private System.Windows.Forms.Label precisionText; 

		public FormMain()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.TeachLabelText = new System.Windows.Forms.Label();
			this.inputLearnCharacter = new System.Windows.Forms.TextBox();
			this.buttonLearnConfirm = new System.Windows.Forms.Button();
			this.buttonLearnCancel = new System.Windows.Forms.Button();
			this.textResult = new System.Windows.Forms.Label();
			this.frameArea1 = new System.Windows.Forms.GroupBox();
			this.buttonRecognise = new System.Windows.Forms.Button();
			this.buttonClearScreen = new System.Windows.Forms.Button();
			this.userDrawArea = new System.Windows.Forms.PictureBox();
			this.frameArea3 = new System.Windows.Forms.GroupBox();
			this.AutoLearn = new System.Windows.Forms.Button();
			this.userTemplateArea = new System.Windows.Forms.PictureBox();
			this.ResultList = new System.Windows.Forms.ListBox();
			this.progressRecognition = new System.Windows.Forms.ProgressBar();
			this.progressText = new System.Windows.Forms.Label();
			this.resultText = new System.Windows.Forms.Label();
			this.precisionTrackBar = new System.Windows.Forms.TrackBar();
			this.precisionText = new System.Windows.Forms.Label();
			this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
			this.btnBreak = new System.Windows.Forms.Button();
			this.frameArea1.SuspendLayout();
			this.frameArea3.SuspendLayout();
			((System.ComponentModel.ISupportInitialize)(this.precisionTrackBar)).BeginInit();
			this.SuspendLayout();
			// 
			// TeachLabelText
			// 
			this.TeachLabelText.AutoSize = true;
			this.TeachLabelText.Location = new System.Drawing.Point(8, 280);
			this.TeachLabelText.Name = "TeachLabelText";
			this.TeachLabelText.Size = new System.Drawing.Size(110, 17);
			this.TeachLabelText.TabIndex = 7;
			this.TeachLabelText.Text = "请输入学习的字符:";
			// 
			// inputLearnCharacter
			// 
			this.inputLearnCharacter.Location = new System.Drawing.Point(8, 304);
			this.inputLearnCharacter.MaxLength = 1;
			this.inputLearnCharacter.Name = "inputLearnCharacter";
			this.inputLearnCharacter.Size = new System.Drawing.Size(24, 21);
			this.inputLearnCharacter.TabIndex = 8;
			this.inputLearnCharacter.Text = "";
			// 
			// buttonLearnConfirm
			// 
			this.buttonLearnConfirm.Location = new System.Drawing.Point(40, 304);
			this.buttonLearnConfirm.Name = "buttonLearnConfirm";
			this.buttonLearnConfirm.Size = new System.Drawing.Size(40, 23);
			this.buttonLearnConfirm.TabIndex = 9;
			this.buttonLearnConfirm.Text = "确认";
			this.buttonLearnConfirm.Click += new System.EventHandler(this.buttonLearnConfirm_Click);
			// 
			// buttonLearnCancel
			// 
			this.buttonLearnCancel.Location = new System.Drawing.Point(80, 304);
			this.buttonLearnCancel.Name = "buttonLearnCancel";
			this.buttonLearnCancel.Size = new System.Drawing.Size(40, 23);
			this.buttonLearnCancel.TabIndex = 10;
			this.buttonLearnCancel.Text = "取消";
			this.buttonLearnCancel.Click += new System.EventHandler(this.buttonLearnCancel_Click);
			// 
			// textResult
			// 
			this.textResult.AutoSize = true;
			this.textResult.Location = new System.Drawing.Point(8, 344);
			this.textResult.Name = "textResult";
			this.textResult.Size = new System.Drawing.Size(97, 17);
			this.textResult.TabIndex = 11;
			this.textResult.Text = "字符识别状态...";
			// 
			// frameArea1
			// 
			this.frameArea1.Controls.Add(this.buttonRecognise);
			this.frameArea1.Controls.Add(this.buttonClearScreen);
			this.frameArea1.Controls.Add(this.userDrawArea);
			this.frameArea1.Location = new System.Drawing.Point(8, 8);
			this.frameArea1.Name = "frameArea1";
			this.frameArea1.Size = new System.Drawing.Size(216, 264);
			this.frameArea1.TabIndex = 12;
			this.frameArea1.TabStop = false;
			this.frameArea1.Text = "用户绘制区域";
			// 
			// buttonRecognise
			// 
			this.buttonRecognise.Location = new System.Drawing.Point(112, 232);
			this.buttonRecognise.Name = "buttonRecognise";
			this.buttonRecognise.TabIndex = 6;
			this.buttonRecognise.Text = "识别";
			this.buttonRecognise.Click += new System.EventHandler(this.buttonRecognise_Click);
			// 
			// buttonClearScreen
			// 
			this.buttonClearScreen.Location = new System.Drawing.Point(32, 232);
			this.buttonClearScreen.Name = "buttonClearScreen";
			this.buttonClearScreen.TabIndex = 5;
			this.buttonClearScreen.Text = "清除";
			this.buttonClearScreen.Click += new System.EventHandler(this.buttonClearScreen_Click);
			// 
			// userDrawArea
			// 
			this.userDrawArea.BackColor = System.Drawing.Color.Black;
			this.userDrawArea.Location = new System.Drawing.Point(8, 24);
			this.userDrawArea.Name = "userDrawArea";
			this.userDrawArea.Size = new System.Drawing.Size(200, 200);
			this.userDrawArea.TabIndex = 1;
			this.userDrawArea.TabStop = false;
			this.userDrawArea.MouseUp += new System.Windows.Forms.MouseEventHandler(this.userDrawArea_MouseUp);
			this.userDrawArea.MouseMove += new System.Windows.Forms.MouseEventHandler(this.userDrawArea_MouseMove);
			this.userDrawArea.MouseDown += new System.Windows.Forms.MouseEventHandler(this.userDrawArea_MouseDown);
			// 
			// frameArea3
			// 
			this.frameArea3.Controls.Add(this.btnBreak);
			this.frameArea3.Controls.Add(this.AutoLearn);
			this.frameArea3.Controls.Add(this.userTemplateArea);
			this.frameArea3.Location = new System.Drawing.Point(232, 8);
			this.frameArea3.Name = "frameArea3";
			this.frameArea3.Size = new System.Drawing.Size(216, 264);
			this.frameArea3.TabIndex = 14;
			this.frameArea3.TabStop = false;
			this.frameArea3.Text = "区域分析";
			// 
			// AutoLearn
			// 
			this.AutoLearn.Location = new System.Drawing.Point(8, 232);
			this.AutoLearn.Name = "AutoLearn";
			this.AutoLearn.Size = new System.Drawing.Size(96, 23);
			this.AutoLearn.TabIndex = 4;
			this.AutoLearn.Text = "自动学习";
			this.AutoLearn.Visible = false;
			this.AutoLearn.Click += new System.EventHandler(this.AutoLearn_Click);
			// 
			// userTemplateArea
			// 
			this.userTemplateArea.BackColor = System.Drawing.Color.Black;
			this.userTemplateArea.Location = new System.Drawing.Point(8, 24);
			this.userTemplateArea.Name = "userTemplateArea";
			this.userTemplateArea.Size = new System.Drawing.Size(200, 200);
			this.userTemplateArea.TabIndex = 3;
			this.userTemplateArea.TabStop = false;
			// 
			// ResultList
			// 
			this.ResultList.ColumnWidth = 20;
			this.ResultList.HorizontalScrollbar = true;
			this.ResultList.ItemHeight = 12;
			this.ResultList.Location = new System.Drawing.Point(240, 280);
			this.ResultList.MultiColumn = true;
			this.ResultList.Name = "ResultList";
			this.ResultList.Size = new System.Drawing.Size(200, 16);
			this.ResultList.TabIndex = 15;
			this.ResultList.DoubleClick += new System.EventHandler(this.ResultList_DoubleClick);
			// 
			// progressRecognition
			// 
			this.progressRecognition.Location = new System.Drawing.Point(240, 304);
			this.progressRecognition.Name = "progressRecognition";
			this.progressRecognition.Size = new System.Drawing.Size(200, 23);
			this.progressRecognition.TabIndex = 16;
			// 
			// progressText
			// 
			this.progressText.AutoSize = true;
			this.progressText.Location = new System.Drawing.Point(176, 312);
			this.progressText.Name = "progressText";
			this.progressText.Size = new System.Drawing.Size(60, 17);
			this.progressText.TabIndex = 17;
			this.progressText.Text = "处理进度:";
			// 
			// resultText
			// 
			this.resultText.AutoSize = true;
			this.resultText.Location = new System.Drawing.Point(176, 280);
			this.resultText.Name = "resultText";
			this.resultText.Size = new System.Drawing.Size(60, 17);
			this.resultText.TabIndex = 18;
			this.resultText.Text = "可选文字:";
			// 
			// precisionTrackBar
			// 
			this.precisionTrackBar.Location = new System.Drawing.Point(240, 336);
			this.precisionTrackBar.Maximum = 50;
			this.precisionTrackBar.Minimum = 1;
			this.precisionTrackBar.Name = "precisionTrackBar";
			this.precisionTrackBar.TabIndex = 100;
			this.precisionTrackBar.Value = 10;
			// 
			// precisionText
			// 
			this.precisionText.AutoSize = true;
			this.precisionText.Location = new System.Drawing.Point(176, 344);
			this.precisionText.Name = "precisionText";
			this.precisionText.Size = new System.Drawing.Size(60, 17);
			this.precisionText.TabIndex = 20;
			this.precisionText.Text = "识别精度:";
			// 
			// openFileDialog1
			// 
			this.openFileDialog1.Filter = "文本文件|*.txt";
			this.openFileDialog1.Title = "请选择源文件!用于学习!";
			// 
			// btnBreak
			// 
			this.btnBreak.Location = new System.Drawing.Point(112, 232);
			this.btnBreak.Name = "btnBreak";
			this.btnBreak.Size = new System.Drawing.Size(96, 23);
			this.btnBreak.TabIndex = 5;
			this.btnBreak.Text = "中断学习";
			this.btnBreak.Visible = false;
			this.btnBreak.Click += new System.EventHandler(this.btnBreak_Click);
			// 
			// FormMain
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(456, 373);
			this.Controls.Add(this.precisionText);
			this.Controls.Add(this.precisionTrackBar);
			this.Controls.Add(this.resultText);
			this.Controls.Add(this.progressText);
			this.Controls.Add(this.progressRecognition);
			this.Controls.Add(this.ResultList);
			this.Controls.Add(this.frameArea3);
			this.Controls.Add(this.frameArea1);
			this.Controls.Add(this.textResult);
			this.Controls.Add(this.buttonLearnCancel);
			this.Controls.Add(this.buttonLearnConfirm);
			this.Controls.Add(this.inputLearnCharacter);
			this.Controls.Add(this.TeachLabelText);
			this.Name = "FormMain";
			this.Text = "OCR 文字识别";
			this.Load += new System.EventHandler(this.FormMain_Load);
			this.frameArea1.ResumeLayout(false);
			this.frameArea3.ResumeLayout(false);
			((System.ComponentModel.ISupportInitialize)(this.precisionTrackBar)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new FormMain());
		}

		private void ClearGraphics(Image img,Color clearColor)
		{
			if(img!=null)
			{
				Graphics g = Graphics.FromImage(img);
				g.FillRectangle(new SolidBrush(clearColor),0,0,img.Width,img.Height);
				g.Dispose();
			}
			userDrawArea.Refresh();
			userTemplateArea.Refresh();
		}

		private void buttonLearnCancel_Click(object sender, System.EventArgs e)
		{
			this.inputLearnCharacter.Text = "";
		}

		private void buttonClearScreen_Click(object sender, System.EventArgs e)
		{
			arrCurrentEigenvalue.Clear();
			arrCurrentEigenvalue.TrimToSize();

			this.textResult.Text = ""; 
			this.progressRecognition.Value = 0;
			
			ClearGraphics(userDrawArea.Image,Color.Black);
			ClearGraphics(userTemplateArea.Image,Color.Black);
		}

		private void GraspRawData()
		{
			bool bool1stScan=true ;
			int ax,ay,bx,by;

			this.ClearGraphics(this.userTemplateArea.Image,Color.Black);

			ax = ay = bx = by = 0;

			Graphics g = Graphics.FromImage(userTemplateAreaBmp);
			
			int b = 0;
			for(int i=0;i<userDrawAreaBmp.Width;i+=(userDrawAreaBmp.Width/this.SplitWidth) / 2)
				for(int j=0;j<userDrawAreaBmp.Height;j+=(userDrawAreaBmp.Height/this.SplitHeight) / 2)
				{
					if(userDrawAreaBmp.GetPixel(i,j).ToArgb()==Color.White.ToArgb())
					{
						if(!bool1stScan)
						{
							if(i<ax) ax = i;
							if(i>=bx) bx = i;
							if(j<ay) ay = j;
							if(j>=by) by = j;
						}