// Displays the image and calls Detect Faces.
private async void BrowseButton_Click(object sender, RoutedEventArgs e)
{
// Get the image file to scan from the user.
var openDlg = new Microsoft.Win32.OpenFileDialog();
openDlg.Filter = "JPEG Image(*.jpg)|*.jpg";
bool?result = openDlg.ShowDialog(this);
// Return if canceled.
if (!(bool)result)
{
return;
}
// Display the image file.
string filePath = openDlg.FileName;
Uri fileUri = new Uri(filePath);
BitmapImage bitmapSource = new BitmapImage();
bitmapSource.BeginInit();
bitmapSource.CacheOption = BitmapCacheOption.None;
bitmapSource.UriSource = fileUri;
bitmapSource.EndInit();
FacePhoto.Source = bitmapSource;
// Detect any faces in the image.
Title = "Detecting...";
faces = await UploadAndDetectFaces(filePath);
Title = String.Format("Detection Finished. {0} face(s) detected", faces.Length);
if (faces.Length > 0)
{
// Prepare to draw rectangles around the faces.
DrawingVisual visual = new DrawingVisual();
DrawingContext drawingContext = visual.RenderOpen();
drawingContext.DrawImage(bitmapSource,
new Rect(0, 0, bitmapSource.Width, bitmapSource.Height));
double dpi = bitmapSource.DpiX;
resizeFactor = 96 / dpi;
faceDescriptions = new String[faces.Length];
for (int i = 0; i < faces.Length; ++i)
{
Face face = faces[i];
// Draw a rectangle on the face.
drawingContext.DrawRectangle(
Brushes.Transparent,
new Pen(Brushes.Red, 2),
new Rect(
face.FaceRectangle.Left * resizeFactor,
face.FaceRectangle.Top * resizeFactor,
face.FaceRectangle.Width * resizeFactor,
face.FaceRectangle.Height * resizeFactor
)
);
// Store the face description.
faceDescriptions[i] = FaceDescription(face);
}
drawingContext.Close();
// Display the image with the rectangle around the face.
RenderTargetBitmap faceWithRectBitmap = new RenderTargetBitmap(
(int)(bitmapSource.PixelWidth * resizeFactor),
(int)(bitmapSource.PixelHeight * resizeFactor),
96,
96,
PixelFormats.Pbgra32);
faceWithRectBitmap.Render(visual);
FacePhoto.Source = faceWithRectBitmap;
// Set the status bar text.
faceDescriptionStatusBar.Text = "Place the mouse pointer over a face to see the face description.";
}
}
private static void CreateTags(Face face)
{
// Age tag
double age = face.faceAttributes.age;
string ageTag = "adult";
if (age < 2)
{
ageTag = "baby";
}
if (age < 5)
{
ageTag = "toddler";
}
else if (age < 13)
{
ageTag = "child";
}
else if (age < 19)
{
ageTag = "teenager";
}
else if (age < 26)
{
ageTag = "young adult";
}
else if (age > 65)
{
ageTag = "elderly";
}
face.tags.Add(ageTag);
// Smile tag
float thresholdSmile = 0.5f;
if (face.faceAttributes.smile > thresholdSmile)
{
face.tags.Add("smiling");
}
// Gender tag
if (face.faceAttributes.gender == "female")
{
if (age < 18)
{
face.tags.Add("girl");
}
else
{
face.tags.Add("woman");
}
}
else if (face.faceAttributes.gender == "male")
{
if (age < 18)
{
face.tags.Add("boy");
}
else
{
face.tags.Add("man");
}
}
// Facial hair tag
float thresholdFacialHair = 0.5f;
if (face.faceAttributes.facialHair.moustache > thresholdFacialHair)
{
face.tags.Add("moustache");
}
if (face.faceAttributes.facialHair.beard > thresholdFacialHair)
{
face.tags.Add("beard");
}
if (face.faceAttributes.facialHair.sideburns > thresholdFacialHair)
{
face.tags.Add("sideburns");
}
// Glasses tag
if (face.faceAttributes.glasses != "NoGlasses")
{
face.tags.Add(face.faceAttributes.glasses);
}
// Makeup tag
if (face.faceAttributes.makeup.eyeMakeup)
{
face.tags.Add("eye makeup");
}
if (face.faceAttributes.makeup.lipMakeup)
{
face.tags.Add("lip makeup");
}
// Emotion tag
float thresholdEmotion = 0.6f;
if (face.faceAttributes.emotion.anger > thresholdEmotion)
{
face.tags.Add("angry");
}
if (face.faceAttributes.emotion.contempt > thresholdEmotion)
{
face.tags.Add("arrogant");
}
if (face.faceAttributes.emotion.disgust > thresholdEmotion)
{
face.tags.Add("disgusted");
}
if (face.faceAttributes.emotion.fear > thresholdEmotion)
{
face.tags.Add("scared");
}
if (face.faceAttributes.emotion.happiness > thresholdEmotion)
{
face.tags.Add("happy");
}
if (face.faceAttributes.emotion.neutral > thresholdEmotion)
{
face.tags.Add("neutral");
}
if (face.faceAttributes.emotion.sadness > thresholdEmotion)
{
face.tags.Add("sad");
}
if (face.faceAttributes.emotion.surprise > thresholdEmotion)
{
face.tags.Add("surprised");
}
// Accessories tag
float thresholdAccessory = 0.5f;
foreach (Accessory a in face.faceAttributes.accessories)
{
if (a.confidence > thresholdAccessory)
{
face.tags.Add(a.type);
}
}
// Hair tag
float thresholdHair = 0.6f;
if (face.faceAttributes.hair.bald > thresholdHair)
{
face.tags.Add("bald");
}
foreach (HairColor h in face.faceAttributes.hair.hairColor)
{
if (h.confidence > thresholdHair)
{
face.tags.Add($"{h.color} hair");
}
}
}
// Returns a string that describes the given face.
private string FaceDescription(Face face)
{
StringBuilder sb = new StringBuilder();
sb.Append("Face: ");
// Add the gender, age, and smile.
sb.Append(face.FaceAttributes.Gender);
sb.Append(", ");
sb.Append(face.FaceAttributes.Age);
sb.Append(", ");
sb.Append(String.Format("smile {0:F1}%, ", face.FaceAttributes.Smile * 100));
// Add the emotions. Display all emotions over 10%.
sb.Append("Emotion: ");
EmotionScores emotionScores = face.FaceAttributes.Emotion;
if (emotionScores.Anger >= 0.1f)
{
sb.Append(String.Format("anger {0:F1}%, ", emotionScores.Anger * 100));
}
if (emotionScores.Contempt >= 0.1f)
{
sb.Append(String.Format("contempt {0:F1}%, ", emotionScores.Contempt * 100));
}
if (emotionScores.Disgust >= 0.1f)
{
sb.Append(String.Format("disgust {0:F1}%, ", emotionScores.Disgust * 100));
}
if (emotionScores.Fear >= 0.1f)
{
sb.Append(String.Format("fear {0:F1}%, ", emotionScores.Fear * 100));
}
if (emotionScores.Happiness >= 0.1f)
{
sb.Append(String.Format("happiness {0:F1}%, ", emotionScores.Happiness * 100));
}
if (emotionScores.Neutral >= 0.1f)
{
sb.Append(String.Format("neutral {0:F1}%, ", emotionScores.Neutral * 100));
}
if (emotionScores.Sadness >= 0.1f)
{
sb.Append(String.Format("sadness {0:F1}%, ", emotionScores.Sadness * 100));
}
if (emotionScores.Surprise >= 0.1f)
{
sb.Append(String.Format("surprise {0:F1}%, ", emotionScores.Surprise * 100));
}
// Add glasses.
sb.Append(face.FaceAttributes.Glasses);
sb.Append(", ");
// Add hair.
sb.Append("Hair: ");
// Display baldness confidence if over 1%.
if (face.FaceAttributes.Hair.Bald >= 0.01f)
{
sb.Append(String.Format("bald {0:F1}% ", face.FaceAttributes.Hair.Bald * 100));
}
// Display all hair color attributes over 10%.
HairColor[] hairColors = face.FaceAttributes.Hair.HairColor;
foreach (HairColor hairColor in hairColors)
{
if (hairColor.Confidence >= 0.1f)
{
sb.Append(hairColor.Color.ToString());
sb.Append(String.Format(" {0:F1}% ", hairColor.Confidence * 100));
}
}
// Return the built string.
return(sb.ToString());
}
