private async Task UpdateResultsAsync(ImageAnalyzer img)
{
try
{
DetectedFaceCollection.Clear();
if (img.DetectedFaces.Any())
{
// extract crops from the image
IList <DetectedFaceViewModel> detectedFaceViewModels = GetDetectedFaceViewModels(img.DetectedFaces, img.IdentifiedPersons);
var stream = img.ImageUrl == null ? await img.GetImageStreamCallback() : new MemoryStream(await new HttpClient().GetByteArrayAsync(img.ImageUrl));
using (stream)
{
var faces = await Util.GetImageCrops(detectedFaceViewModels, i => i.FaceRectangle.ToRect(), stream.AsRandomAccessStream());
if (faces != null)
{
DetectedFaceCollection.AddRange(faces);
}
}
}
CurrentDetectedFace = DetectedFaceCollection.FirstOrDefault();
this.notFoundGrid.Visibility = DetectedFaceCollection.Any() ? Visibility.Collapsed : Visibility.Visible;
}
finally
{
this.progressRing.IsActive = false;
}
}
private void DisplayProcessingUI()
{
CurrentDetectedFace = null;
DetectedFaceCollection.Clear();
this.progressRing.IsActive = true;
}
