public async Task InitializeAsync()
{
try
{
IsLoading = true;
if (FaceService == null)
{
FaceService = await FaceServiceHelper.CreateNewFaceServiceAsync();
}
var personGroupResult = await FaceService.ListPersonGroupsAsync();
personGroupResult.OrderBy(pg => pg.Name);
personGroupResult.ForEach(pg => PersonGroups.Add(pg));
IsLoading = false;
}
catch (FaceAPIException ex)//Handle API-Exception
{
await MessageDialogHelper.MessageDialogAsync(ex.ErrorMessage);
}
catch (Exception ex)
{
await MessageDialogHelper.MessageDialogAsync(ex.Message);
}
}
/// <summary>
/// Initializes face detection on the preview stream, from https://docs.microsoft.com/en-us/windows/uwp/audio-video-camera/scene-analysis-for-media-capture
/// </summary>
/// <returns></returns>
public async Task InitializeFaceDetection()
{
// Load the face service client to to face recognition with Cognitive Services
if (FaceService == null)
{
FaceService = await FaceServiceHelper.CreateNewFaceServiceAsync();
}
// Create the definition, which will contain some initialization settings
var definition = new FaceDetectionEffectDefinition();
// To ensure preview smoothness, do not delay incoming samples
definition.SynchronousDetectionEnabled = false;
// In this scenario, choose detection speed over accuracy
definition.DetectionMode = FaceDetectionMode.HighPerformance;
// Add the effect to the preview stream
_faceDetectionEffect = (FaceDetectionEffect)await _mediaCapture.AddVideoEffectAsync(definition, MediaStreamType.VideoPreview);
// TODO: Chance to a good frequency to save Cognitive Services API calls
// Choose the shortest interval between detection events
//_faceDetectionEffect.DesiredDetectionInterval = TimeSpan.FromMilliseconds(33);
// Currently we offline detect faces every 3 seconds to save API calls
_faceDetectionEffect.DesiredDetectionInterval = TimeSpan.FromMilliseconds(3000);
// Start detecting faces
_faceDetectionEffect.Enabled = true;
// Register for face detection events
_faceDetectionEffect.FaceDetected += FaceDetectionEffect_FaceDetected;
_isDetecting = true;
}
public async Task InitializeAsync()
{
try
{
if (FaceService == null)
{
FaceService = await FaceServiceHelper.CreateNewFaceServiceAsync();
}
//Load all facegroups
_personGroups = await FaceService.ListPersonGroupsAsync();
}
catch (FaceAPIException ex)//Handle API-Exception
{
await MessageDialogHelper.MessageDialogAsync(ex.ErrorMessage);
}
catch (Exception ex)
{
await MessageDialogHelper.MessageDialogAsync(ex.Message);
}
startLoop();
}
public async Task InitializeAsync()
{
try
{
IsLoading = true;
if (FaceService == null)
{
FaceService = await FaceServiceHelper.CreateNewFaceServiceAsync();
}
await LoadGroupsAsync();
IsLoading = false;
}
catch (FaceAPIException ex)//Handle API-Exception
{
await MessageDialogHelper.MessageDialogAsync(ex.ErrorMessage);
}
catch (Exception ex)
{
await MessageDialogHelper.MessageDialogAsync(ex.Message);
}
}