// The main function call for processing sequences
private void ProcessSequence(SequenceReader reader)
{
Thread.CurrentThread.Priority = ThreadPriority.Highest;
SetupFeatureExtractionMode();
thread_running = true;
// Reload the face landmark detector if needed
ReloadLandmarkDetector();
if (!landmark_detector.isLoaded())
{
DetectorNotFoundWarning();
EndMode();
thread_running = false;
return;
}
// Set the face detector
face_model_params.SetFaceDetector(DetectorHaar, DetectorHOG, DetectorCNN);
face_model_params.optimiseForVideo();
// Setup the visualization
Visualizer visualizer_of = new Visualizer(ShowTrackedVideo || RecordTracked, ShowAppearance, ShowAppearance, false);
// Initialize the face analyser
face_analyser = new FaceAnalyserManaged(AppDomain.CurrentDomain.BaseDirectory, DynamicAUModels, image_output_size, MaskAligned);
// Reset the tracker
landmark_detector.Reset();
// Loading an image file
var frame = new RawImage(reader.GetNextImage());
var gray_frame = new RawImage(reader.GetCurrentFrameGray());
// Setup recording
RecorderOpenFaceParameters rec_params = new RecorderOpenFaceParameters(true, reader.IsWebcam(),
Record2DLandmarks, Record3DLandmarks, RecordModelParameters, RecordPose, RecordAUs,
RecordGaze, RecordHOG, RecordTracked, RecordAligned, false,
reader.GetFx(), reader.GetFy(), reader.GetCx(), reader.GetCy(), reader.GetFPS());
RecorderOpenFace recorder = new RecorderOpenFace(reader.GetName(), rec_params, record_root);
// For FPS tracking
DateTime?startTime = CurrentTime;
var lastFrameTime = CurrentTime;
// Empty image would indicate that the stream is over
while (!gray_frame.IsEmpty)
{
if (!thread_running)
{
break;
}
double progress = reader.GetProgress();
bool detection_succeeding = landmark_detector.DetectLandmarksInVideo(frame, face_model_params, gray_frame);
// The face analysis step (for AUs and eye gaze)
face_analyser.AddNextFrame(frame, landmark_detector.CalculateAllLandmarks(), detection_succeeding, false);
gaze_analyser.AddNextFrame(landmark_detector, detection_succeeding, reader.GetFx(), reader.GetFy(), reader.GetCx(), reader.GetCy());
// Only the final face will contain the details
VisualizeFeatures(frame, visualizer_of, landmark_detector.CalculateAllLandmarks(), landmark_detector.GetVisibilities(), detection_succeeding, true, false, reader.GetFx(), reader.GetFy(), reader.GetCx(), reader.GetCy(), progress);
// Record an observation
RecordObservation(recorder, visualizer_of.GetVisImage(), 0, detection_succeeding, reader.GetFx(), reader.GetFy(), reader.GetCx(), reader.GetCy(), reader.GetTimestamp(), reader.GetFrameNumber());
if (RecordTracked)
{
recorder.WriteObservationTracked();
}
while (thread_running & thread_paused && skip_frames == 0)
{
Thread.Sleep(10);
}
if (skip_frames > 0)
{
skip_frames--;
}
frame = new RawImage(reader.GetNextImage());
gray_frame = new RawImage(reader.GetCurrentFrameGray());
lastFrameTime = CurrentTime;
processing_fps.AddFrame();
}
// Finalize the recording and flush to disk
recorder.Close();
// Post-process the AU recordings
if (RecordAUs)
{
face_analyser.PostProcessOutputFile(recorder.GetCSVFile());
}
// Close the open video/webcam
reader.Close();
EndMode();
}
private void ProcessIndividualImages(ImageReader reader)
{
// Make sure the GUI is setup appropriately
SetupFeatureExtractionMode();
// Indicate we will start running the thread
thread_running = true;
// Reload the face landmark detector if needed
ReloadLandmarkDetector();
if (!landmark_detector.isLoaded())
{
DetectorNotFoundWarning();
EndMode();
thread_running = false;
return;
}
// Setup the parameters optimized for working on individual images rather than sequences
face_model_params.optimiseForImages();
// Setup the visualization
Visualizer visualizer_of = new Visualizer(ShowTrackedVideo || RecordTracked, ShowAppearance, ShowAppearance, false);
// Initialize the face detector if it has not been initialized yet
if (face_detector == null)
{
face_detector = new FaceDetector(face_model_params.GetHaarLocation(), face_model_params.GetMTCNNLocation());
}
// Initialize the face analyser
face_analyser = new FaceAnalyserManaged(AppDomain.CurrentDomain.BaseDirectory, false, image_output_size, MaskAligned);
// Loading an image file
var frame = reader.GetNextImage();
var gray_frame = reader.GetCurrentFrameGray();
// For FPS tracking
DateTime?startTime = CurrentTime;
var lastFrameTime = CurrentTime;
// This will be false when the image is not available
while (reader.isOpened())
{
if (!thread_running)
{
break;
}
// Setup recording
RecorderOpenFaceParameters rec_params = new RecorderOpenFaceParameters(false, false,
Record2DLandmarks, Record3DLandmarks, RecordModelParameters, RecordPose, RecordAUs,
RecordGaze, RecordHOG, RecordTracked, RecordAligned, true,
reader.GetFx(), reader.GetFy(), reader.GetCx(), reader.GetCy(), 0);
RecorderOpenFace recorder = new RecorderOpenFace(reader.GetName(), rec_params, record_root);
visualizer_of.SetImage(frame, reader.GetFx(), reader.GetFy(), reader.GetCx(), reader.GetCy());
// Detect faces here and return bounding boxes
List <Rect> face_detections = new List <Rect>();
List <float> confidences = new List <float>();
if (DetectorHOG)
{
face_detector.DetectFacesHOG(face_detections, gray_frame, confidences);
}
else if (DetectorCNN)
{
face_detector.DetectFacesMTCNN(face_detections, frame, confidences);
}
else if (DetectorHaar)
{
face_detector.DetectFacesHaar(face_detections, gray_frame, confidences);
}
// For visualization
double progress = reader.GetProgress();
for (int i = 0; i < face_detections.Count; ++i)
{
bool detection_succeeding = landmark_detector.DetectFaceLandmarksInImage(frame, face_detections[i], face_model_params, gray_frame);
var landmarks = landmark_detector.CalculateAllLandmarks();
// Predict action units
var au_preds = face_analyser.PredictStaticAUsAndComputeFeatures(frame, landmarks);
// Predic eye gaze
gaze_analyser.AddNextFrame(landmark_detector, detection_succeeding, reader.GetFx(), reader.GetFy(), reader.GetCx(), reader.GetCy());
// Only the final face will contain the details
VisualizeFeatures(frame, visualizer_of, landmarks, landmark_detector.GetVisibilities(), detection_succeeding, i == 0, true, reader.GetFx(), reader.GetFy(), reader.GetCx(), reader.GetCy(), progress);
// Record an observation
RecordObservation(recorder, visualizer_of.GetVisImage(), i, detection_succeeding, reader.GetFx(), reader.GetFy(), reader.GetCx(), reader.GetCy(), 0, 0);
}
recorder.SetObservationVisualization(visualizer_of.GetVisImage());
frame = reader.GetNextImage();
gray_frame = reader.GetCurrentFrameGray();
// Write out the tracked image
if (RecordTracked)
{
recorder.WriteObservationTracked();
}
// Do not cary state accross images
landmark_detector.Reset();
face_analyser.Reset();
recorder.Close();
lastFrameTime = CurrentTime;
processing_fps.AddFrame();
// TODO how to report errors from the reader here? exceptions? logging? Problem for future versions?
}
EndMode();
}