[C#/WPF] InkCanvas 클래스 : 필기 인식하기

■ InkCanvas 클래스에서 필기를 인식하는 방법을 보여준다.

TestProject.zip

0.16MB

▶ MainWindow.xaml

<Window x:Class="TestProject.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="800"
    Height="600"
    Title="TestProject"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <StackPanel
        HorizontalAlignment="Center"
        VerticalAlignment="Center">
        <Border
            Width="300"
            Height="300"
            BorderThickness="2"
            BorderBrush="Black"
            Background="White">
            <InkCanvas Name="inkCanvas" />
        </Border>
        <StackPanel
            HorizontalAlignment="Center"
            Margin="10"
            Orientation="Horizontal">
            <TextBox Name="resultTextBox"
                Width="225"
                Height="25"
                BorderThickness="1"
                BorderBrush="Black"
                IsReadOnly="True"
                VerticalContentAlignment="Center" />
            <Button Name="recognizeButton"
                Margin="10 0 0 0"
                Width="100"
                Height="30"
                Content="인식하기" />
        </StackPanel>
        <Button x:Name="clearCanvasButton"
            Width="150"
            Height="30"
            Content="캐버스 지우기" />
    </StackPanel>
</Window>

 

▶ MainWindow.xaml.cs

using System.IO;
using System.Windows;

using Microsoft.Ink;

namespace TestProject
{
    /// <summary>
    /// 메인 윈도우
    /// </summary>
    public partial class MainWindow : Window
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainWindow()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainWindow()
        {
            InitializeComponent();

            this.recognizeButton.Click   += recognizeButton_Click;
            this.clearCanvasButton.Click += clearCanvasButton_Click;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region 인식하기 버튼 클릭시 처리하기 - recognizeButton_Click(sender, e)

        /// <summary>
        /// 인식하기 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void recognizeButton_Click(object sender, RoutedEventArgs e)
        {
            using(MemoryStream stream = new MemoryStream())
            {
                this.inkCanvas.Strokes.Save(stream);

                Ink ink = new Ink();

                ink.Load(stream.ToArray());

                using(RecognizerContext context = new RecognizerContext())
                {
                    if(ink.Strokes.Count > 0)
                    {
                        context.Strokes = ink.Strokes;

                        RecognitionStatus status;

                        RecognitionResult result = context.Recognize(out status);

                        if(status == RecognitionStatus.NoError)
                        {
                            this.resultTextBox.Text = result.TopString;
                        }
                        else
                        {
                            MessageBox.Show("글자 인식을 실패했습니다.");
                        }
                    }
                    else
                    {
                        MessageBox.Show("글자 획을 발견할 수 없습니다.");
                    }
                }
            }
        }

        #endregion
        #region 캔버스 지우기 버튼 클릭시 처리하기 - clearCanvasButton_Click(sender, e)

        /// <summary>
        /// 캔버스 지우기 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void clearCanvasButton_Click(object sender, RoutedEventArgs e)
        {
            this.inkCanvas.Strokes.Clear();

            this.resultTextBox.Text = null;
        }

        #endregion
    }
}

 

※ C:\Program Files\Common Files\microsoft shared\ink\Microsoft.Ink.dll 파일을 참조한다.