■ FaceDetector 클래스의 DetectFacesAsync 메소드를 사용해 얼굴을 탐지하는 방법을 보여준다.
▶ IFaceDetectionService.cs
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using System.Collections.Generic; using System.Drawing; using System.IO; using System.Threading.Tasks; using Windows.Media.FaceAnalysis; namespace TestProject { /// <summary> /// 얼굴 탐지 서비스 /// </summary> public interface IFaceDetectionService { //////////////////////////////////////////////////////////////////////////////////////////////////// Method #region 탐지 얼굴 리스트 구하기 - GetDetectedFaceList(stream) /// <summary> /// 탐지 얼굴 리스트 구하기 /// </summary> /// <param name="stream">스트림</param> /// <returns>탐지 얼굴 리스트 태스크</returns> Task<IList<DetectedFace>> GetDetectedFaceList(Stream stream); #endregion #region 탐지 얼굴 비트맵 구하기 - GetDetectedFaceBitmap(stream, detectedFaceList, boxColor, strokeThickness) /// <summary> /// 탐지 얼굴 비트맵 구하기 /// </summary> /// <param name="stream">스트림</param> /// <param name="detectedFaceList">탐지 얼굴 리스트</param> /// <param name="boxColor">박스 색상</param> /// <param name="strokeThickness">스트로크 두께</param> /// <returns>탐지 얼굴 비트맵</returns> Bitmap GetDetectedFaceBitmap(Stream stream, IList<DetectedFace> detectedFaceList, Color boxColor, int strokeThickness = 2); #endregion } } |
▶ FaceDetectionService.cs
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using System; using System.Collections.Generic; using System.IO; using System.Threading.Tasks; using Windows.Graphics.Imaging; using Windows.Media.FaceAnalysis; using Windows.Storage.Streams; namespace TestProject { /// <summary> /// 얼굴 탐지 서비스 /// </summary> public class FaceDetectionService : IFaceDetectionService { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 탐지 얼굴 리스트 구하기 - GetDetectedFaceList(stream) /// <summary> /// 탐지 얼굴 리스트 구하기 /// </summary> /// <param name="stream">스트림</param> /// <returns>탐지 얼굴 리스트 태스크</returns> public async Task<IList<DetectedFace>> GetDetectedFaceList(Stream stream) { IRandomAccessStream randomAccessStream = stream.AsRandomAccessStream(); var bitmapDecoder = await BitmapDecoder.CreateAsync(randomAccessStream); using SoftwareBitmap sourceBitmap = await bitmapDecoder.GetSoftwareBitmapAsync(); SoftwareBitmap targetBitmap = FaceDetector.IsBitmapPixelFormatSupported(sourceBitmap.BitmapPixelFormat) ? sourceBitmap : SoftwareBitmap.Convert(sourceBitmap, BitmapPixelFormat.Gray8); FaceDetector faceDetector = await FaceDetector.CreateAsync(); IList<DetectedFace> detectedFaceList = await faceDetector.DetectFacesAsync(targetBitmap); return detectedFaceList; } #endregion #region 탐지 얼굴 비트맵 구하기 - GetDetectedFaceBitmap(stream, detectedFaceList, boxColor, strokeThickness) /// <summary> /// 탐지 얼굴 비트맵 구하기 /// </summary> /// <param name="stream"></param> /// <param name="detectedFaceList"></param> /// <param name="boxColor"></param> /// <param name="strokeThickness"></param> /// <returns></returns> public System.Drawing.Bitmap GetDetectedFaceBitmap ( Stream stream, IList<DetectedFace> detectedFaceList, System.Drawing.Color boxColor, int strokeThickness = 2 ) { System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(stream); using(System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(bitmap)) { using System.Drawing.Pen pen = new System.Drawing.Pen(boxColor, strokeThickness); foreach(DetectedFace detectedFace in detectedFaceList) { BitmapBounds bitmapBounds = detectedFace.FaceBox; graphics.DrawRectangle ( pen, (int)bitmapBounds.X, (int)bitmapBounds.Y, (int)bitmapBounds.Width, (int)bitmapBounds.Height ); } } return bitmap; } #endregion } } |
▶ MainWindow.xaml
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<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="FaceDetector 클래스 : DetectFacesAsync 메소드를 사용해 얼굴 탐지하기" FontFamily="나눔고딕코딩" FontSize="16"> <Grid> <Border Margin="10" BorderThickness="1" BorderBrush="Black"> <Image Name="image" /> </Border> </Grid> </Window> |
▶ MainWindow.xaml.cs
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using System.IO; using System.Windows; using System.Windows.Media.Imaging; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); Loaded += Window_Loaded; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 윈도우 로드시 처리하기 - Window_Loaded(sender, e) /// <summary> /// 윈도우 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private async void Window_Loaded(object sender, RoutedEventArgs e) { FaceDetectionService service = new FaceDetectionService(); await using FileStream fileStream = File.OpenRead(@"IMAGE\sample.jpg"); var faces = await service.GetDetectedFaceList(fileStream); System.Drawing.Bitmap FacesBitmap = service.GetDetectedFaceBitmap(fileStream, faces, System.Drawing.Color.Red, 8); this.image.Source = GetBitmapImage(FacesBitmap); } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 비트맵 이미지 구하기 - GetBitmapImage(bitmap) /// <summary> /// 비트맵 이미지 구하기 /// </summary> /// <param name="bitmap">비트맵</param> /// <returns>비트맵 이미지</returns> private BitmapImage GetBitmapImage(System.Drawing.Bitmap bitmap) { using MemoryStream stream = new MemoryStream(); bitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Bmp); stream.Position = 0; BitmapImage bitmapImage = new BitmapImage(); bitmapImage.BeginInit(); bitmapImage.CacheOption = BitmapCacheOption.OnLoad; bitmapImage.StreamSource = stream; bitmapImage.EndInit(); bitmapImage.Freeze(); return bitmapImage; } #endregion } } |
