public static BitmapSource DrawFaces(BitmapSource baseImage, FaceAPI.Face[] faces, ObservableCollection <Microsoft.ProjectOxford.Face.Controls.Face> targetFaces, EmotionScores[] emotionScores, string[] celebName, List <PersonData> personData, DataTable dataTable, ImageWall imageWall)
{
if (faces == null)
{
return(baseImage);
}
Action <DrawingContext, BitmapSource, double> drawAction = (drawingContext, oriImage, annotationScale) =>
{
for (int i = 0; i < faces.Length; i++)
{
if (targetFaces[i].PersonName == "Unknown")
{
continue;
}
var face = faces[i];
imageWall.colorful[imageWall.id.IndexOf(targetFaces[i].FaceId)] = true;
if (face.FaceRectangle == null)
{
continue;
}
PersonData pD = new PersonData();
try {
pD = personData.Find(x => x.ID == targetFaces[i].FaceId);
pD.Times++;
} catch (Exception) {
personData.Find(x => x.ID == targetFaces[i].FaceId);
}
Rect faceRect = new Rect(
face.FaceRectangle.Left, face.FaceRectangle.Top,
face.FaceRectangle.Width, face.FaceRectangle.Height);
Int32Rect faceRectInt32 = new Int32Rect(
face.FaceRectangle.Left, face.FaceRectangle.Top,
face.FaceRectangle.Width, face.FaceRectangle.Height);
string text = "";
drawingContext.DrawImage(new CroppedBitmap(oriImage, faceRectInt32), faceRect);
if (face.FaceAttributes != null)
{
text += Aggregation.SummarizeFaceAttributes(face.FaceAttributes, targetFaces[i].PersonName, pD);
}
if (emotionScores?[i] != null)
{
text += Aggregation.SummarizeEmotion(emotionScores[i]);
}
if (celebName?[i] != null)
{
text += celebName[i];
}
faceRect.Inflate(6 * annotationScale, 6 * annotationScale);
double lineThickness = 4 * annotationScale;
drawingContext.DrawRectangle(
Brushes.Transparent,
new Pen(s_lineBrush, lineThickness),
faceRect);
if (text != "")
{
FormattedText ft = new FormattedText(text,
CultureInfo.CurrentCulture, FlowDirection.LeftToRight, s_typeface,
16 * annotationScale, Brushes.Black);
var pad = 3 * annotationScale;
var ypad = pad;
var xpad = pad + 4 * annotationScale;
var origin = new System.Windows.Point(
faceRect.Left + xpad - lineThickness / 2,
faceRect.Top - ft.Height - ypad + lineThickness / 2);
var rect = ft.BuildHighlightGeometry(origin).GetRenderBounds(null);
rect.Inflate(xpad, ypad);
drawingContext.DrawRectangle(s_lineBrush, null, rect);
drawingContext.DrawText(ft, origin);
}
}
dataTable.dataGrid.ItemsSource = personData;
imageWall.UpdateCanvas();
};
return(DrawOverlay(baseImage, drawAction));
}
public static string SummarizeFaceAttributes(FaceAttributes attr, string personName, PersonData personData)
{
List <string> attrs = new List <string>();
//if (attr.Gender != null) attrs.Add(attr.Gender);
//if (attr.Age > 0) attrs.Add(attr.Age.ToString());
//if (attr.HeadPose != null)
//{
// // Simple rule to estimate whether person is facing camera.
// bool facing = Math.Abs(attr.HeadPose.Yaw) < 25;
// attrs.Add(facing ? "facing camera" : "not facing camera");
//}
attrs.Add(personName);
if (personName != "Unknown")
{
attrs.Add(personData.Times.ToString());
}
return(string.Join(", ", attrs));
}