/// <summary>
/// Updates the corresponding tracked identity object in the local identity store, used when emotions are detected for a certain (detected) face.
/// </summary>
/// <param name="emotion">The emotion object as generated by the Cognitive Services Emotion API.</param>
/// <remarks>
/// Assumes the concerning face is also (or rather, already) detected by the face tracker (Windows FaceAnalysis namespace).
/// </remarks>
public void DetectedEmotion(Emotion emotion)
{
var identity = FindNearestIdentity(emotion.FaceRectangle);
if (identity != null)
{
identity.EmotionScores = emotion.Scores;
}
}
public Emotions GetMaxEmotion(Microsoft.ProjectOxford.Emotion.Contract.Emotion personEmotion)
{
var emotions = personEmotion.Scores.ToRankedList();
Emotions maxEmotion = new Emotions {
EmotionName = Emotions.emotion.Happiness,
EmotionValue = 0
};
foreach (var emotion in emotions)
{
if (emotion.Value > maxEmotion.EmotionValue)
{
maxEmotion.EmotionValue = emotion.Value;
maxEmotion.EmotionName = (Emotions.emotion)Enum.Parse(typeof(Emotions.emotion), emotion.Key);
}
}
return(maxEmotion);
}
private void SetNewEmotions()
{
var originalHeight = _model.Photo.GetFullImageHeight();
var originalWidth = _model.Photo.GetFullImageWidth();
for (var i = 0; i < _model.Emotions.Length; i++)
{
Emotion emotion = _model.Emotions[i];
var strongestEmotion = GetStrongestEmotion(emotion.Scores);
View faceView;
if (strongestEmotion != null)
{
faceView = new Image
{
Source = ImageSource.FromResource($"IntelligentPx.Resources.Emotions.{strongestEmotion}.png"),
Aspect = Aspect.AspectFit
};
}
else
{
faceView = new BoxView {
BackgroundColor = Color.Black, Opacity = 0.4
};
}
ImageLayout.Children.Add(faceView,
Constraint.RelativeToView(Image, (rl, v) => v.X + emotion.FaceRectangle.Left * v.Width / originalWidth),
Constraint.RelativeToView(Image, (rl, v) => v.Y + emotion.FaceRectangle.Top * v.Height / originalHeight),
Constraint.RelativeToView(Image, (rl, v) => emotion.FaceRectangle.Width * v.Width / originalWidth),
Constraint.RelativeToView(Image, (rl, v) => emotion.FaceRectangle.Height * v.Height / originalHeight));
ImageLayout.Children.Add(new Label {
Text = i.ToString(), TextColor = Color.White, FontAttributes = FontAttributes.Bold
},
Constraint.RelativeToView(faceView, (rl, v) => v.X - 10),
Constraint.RelativeToView(faceView, (rl, v) => v.Y + 10));
}
}