WPF下System.Windows.Ink的手写识别可否达到工具栏中的tablet pc输入面板中的识别率
WPF下,用了InkCanvas控件和System.Windows.Ink进行手写识别。识别率还算可以。 但是用了下 任务栏-》工具栏-》tablet pc输入面板 中的手写识别后就不淡定了。 识别率咋就相差这么大呢?系统自带的这个工具咋就这么好使呢?难道调用不是同一个识别库文件吗?都有tablet pc字样啊?
C# code?//添加对 WPF 墨迹分析程序集、IAWinFX.dll、IACore.dll 和 IALoader.dll(这些内容可以在 \Program Files\Reference Assemblies\Microsoft\Tablet PC\v1.7 中找到)的引用。 using System.Windows.Ink; // Recognizes handwriting by using RecognizerContext private void buttonClick(object sender, RoutedEventArgs e) { InkAnalyzer theInkAnalyzer = new InkAnalyzer(); theInkAnalyzer.AddStrokes(theInkCanvas.Strokes); theInkAnalyzer.SetStrokesLanguageId(theInkCanvas.Strokes, 0x0804); // 0x0804 简体中文 theInkAnalyzer.SetStrokesType(theInkCanvas.Strokes, StrokeType.Writing); AnalysisStatus status = theInkAnalyzer.Analyze(); if (status.Successful) { //textBox1.Text = theInkAnalyzer.GetRecognizedString(); textBox1.Text = ""; for (int i = 0; i < theInkAnalyzer.GetAlternates().Count; i++) { textBox1.Text += theInkAnalyzer.GetAlternates()[i].RecognizedString; } } else { MessageBox.Show("识别失败"); } }
tablet pc输入面板是调用的哪个识别库?可否在WPF程序中调用它?达到tablet pc输入面板那样高的识别率?
如果换种方式在程序中打开tablet pc输入面板窗口的话, 又比较担心用户会通过点击输入窗口的选项或者帮助切换出主程序界面。
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF // ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO // THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A // PARTICULAR PURPOSE. // // Copyright (c) Microsoft Corporation. All rights reserved. // // File: InkRecognition.cs // Simple Ink Recognition Sample Application // // This program demonstrates how one can build a basic handwriting // recognition application using Microsoft Tablet PC Automation API. // It first creates an InkCollector object to enable inking // in the window. Upon receiving the "Recognize!" command, fired // from the application's button, ToString() is invoked on the // collected ink strokes to retrieve the best match using the // default recognizer. The results are presented in a message box. // // The features used are: InkCollector, Ink, Strokes, // RecognizerContext, and RecognizerResult // //-------------------------------------------------------------------------- using System; using System.Drawing; using System.Windows.Forms; // The Ink namespace, which contains the Tablet PC Platform API using Microsoft.Ink; namespace Microsoft.Samples.TabletPC.InkRecognition { /// <summary> /// The InkRecognition Sample Application form class /// </summary> public class InkRecognition : System.Windows.Forms.Form { // Declare the Ink Collector object private InkCollector myInkCollector = null; // myRecognizers is used to retrieve the number of installed recognizers Recognizers myRecognizers; #region Standard Template Code private System.Windows.Forms.GroupBox gbInkArea; private System.Windows.Forms.Button btnRecognize; private System.Windows.Forms.TextBox txtResults; private System.ComponentModel.Container components = null; #endregion /// <summary> /// Initialize the form and ink collector /// </summary> public InkRecognition() { #region Standard Template Code // // Required for Windows Form Designer support // InitializeComponent(); #endregion } #region Standard Template Code /// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } if (myInkCollector != null) { myInkCollector.Dispose(); } } base.Dispose( disposing ); } #endregion #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { this.gbInkArea = new System.Windows.Forms.GroupBox(); this.btnRecognize = new System.Windows.Forms.Button(); this.txtResults = new System.Windows.Forms.TextBox(); this.SuspendLayout(); // // gbInkArea // this.gbInkArea.Location = new System.Drawing.Point(8, 0); this.gbInkArea.Name = "gbInkArea"; this.gbInkArea.Size = new System.Drawing.Size(280, 136); this.gbInkArea.TabIndex = 0; this.gbInkArea.TabStop = false; this.gbInkArea.Text = "Ink Here"; // // btnRecognize // this.btnRecognize.Location = new System.Drawing.Point(8, 144); this.btnRecognize.Name = "btnRecognize"; this.btnRecognize.Size = new System.Drawing.Size(280, 23); this.btnRecognize.TabIndex = 1; this.btnRecognize.Text = "Recognize Ink"; this.btnRecognize.Click += new System.EventHandler(this.btnRecognize_Click); // // txtResults // this.txtResults.BackColor = System.Drawing.SystemColors.Window; this.txtResults.ForeColor = System.Drawing.SystemColors.WindowText; this.txtResults.Location = new System.Drawing.Point(8, 176); this.txtResults.Name = "txtResults"; this.txtResults.ReadOnly = true; this.txtResults.Size = new System.Drawing.Size(280, 20); this.txtResults.TabIndex = 2; this.txtResults.Text = ""; // // InkRecognition // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(292, 206); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.txtResults, this.btnRecognize, this.gbInkArea}); this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle; this.MaximizeBox = false; this.Name = "InkRecognition"; this.Text = "Ink Recognition Sample"; this.Load += new System.EventHandler(this.InkRecognition_Load); this.ResumeLayout(false); } #endregion #region Standard Template Code /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new InkRecognition()); } #endregion /// <summary> /// Event Handler from Form Load Event /// Setup the ink collector for collection /// </summary> /// <param name="sender">The control that raised the event.</param> /// <param name="e">The event arguments.</param> private void InkRecognition_Load(object sender, System.EventArgs e) { // Create the recognizers collection myRecognizers = new Recognizers(); // Create a new ink collector that uses the group box handle myInkCollector = new InkCollector(gbInkArea.Handle); // Turn the ink collector on myInkCollector.Enabled = true; } /// <summary> /// Event Handle recognize button click event /// </summary> /// <param name="sender">The control that raised the event.</param> /// <param name="e">The event arguments.</param> private void btnRecognize_Click(object sender, System.EventArgs e) { // Check to ensure that the user has at least one recognizer installed // Note that this is a preventive check - otherwise, an exception will // occur during recognition. if (0 == myRecognizers.Count) { MessageBox.Show("There are no handwriting recognizers installed. You need to have at least one in order to recognize ink."); } else { // Note that the Strokes' ToString() method is a // shortcut for retrieving the best match using the // default recognizer. The same result can also be // obtained using the RecognizerContext. For an // example, uncomment the following lines of code: // // using (RecognizerContext myRecoContext = new RecognizerContext()) // { // RecognitionStatus status; // RecognitionResult recoResult; // // myRecoContext.Strokes = myInkCollector.Ink.Strokes; // recoResult = myRecoContext.Recognize(out status); // txtResults.SelectedText = recoResult.TopString; // } txtResults.SelectedText = myInkCollector.Ink.Strokes.ToString(); // If the mouse is pressed, do not perform the deletion - // this prevents deleting a stroke that is still being drawn if (!myInkCollector.CollectingInk) { // Once the strokes have been recognized, delete them myInkCollector.Ink.DeleteStrokes(); // Repaint the drawing area gbInkArea.Refresh(); } } } } }
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