/// <summary>
/// Verify the face with the person, get whether these two faces belong to the same person
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event argument</param>
private async void Face2PersonVerification_Click(object sender, RoutedEventArgs e)
{
// Call face to face verification, verify REST API supports one face to one person verification only
// Here, we handle single face image only
if (Person != null && Person.Faces.Count != 0 && RightFaceResultCollection.Count == 1)
{
PersonVerifyResult = "Verifying...";
var faceId = RightFaceResultCollection[0].FaceId;
MainWindow.Log("Request: Verifying face {0} and person {1}", faceId, Person.PersonName);
// Call verify REST API with two face id
try
{
var faceServiceClient = FaceServiceClientHelper.GetInstance(this);
var res = await faceServiceClient.Face.VerifyFaceToPersonAsync(Guid.Parse(faceId), Guid.Parse(Person.PersonId), null, GroupName);
// Verification result contains IsIdentical (true or false) and Confidence (in range 0.0 ~ 1.0),
// here we update verify result on UI by PersonVerifyResult binding
PersonVerifyResult = string.Format("{0} ({1:0.0})", res.IsIdentical ? "the face belongs to the person" : "the face not belong to the person", res.Confidence);
MainWindow.Log("Response: Success. Face {0} {1} person {2}", faceId, res.IsIdentical ? "belong" : "not belong", Person.PersonName);
}
catch (APIErrorException ex)
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
return;
}
}
else
{
MessageBox.Show("Verification accepts one person containing face(s) and one face as input, please check.", "Warning", MessageBoxButton.OK);
}
GC.Collect();
}
/// <summary>
/// Pick image for detection, and using the detected face as the face to person verify.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void FaceImagePicker_Click(object sender, RoutedEventArgs e)
{
// Show image picker, show jpg type files only
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.DefaultExt = ".jpg";
dlg.Filter = "Image files(*.jpg, *.png, *.bmp, *.gif) | *.jpg; *.png; *.bmp; *.gif";
var result = dlg.ShowDialog();
if (result.HasValue && result.Value)
{
PersonVerifyResult = string.Empty;
// User already picked one image
var pickedImagePath = dlg.FileName;
var renderingImage = UIHelper.LoadImageAppliedOrientation(pickedImagePath);
var imageInfo = UIHelper.GetImageInfoForRendering(renderingImage);
RightImageDisplay2.Source = renderingImage;
// Clear last time detection results
RightFaceResultCollection.Clear();
PersonVerifyButton.IsEnabled = (FacesCollection.Count != 0 && RightFaceResultCollection.Count != 0);
MainWindow.Log("Request: Detecting in {0}", pickedImagePath);
var sw = Stopwatch.StartNew();
// Call detection REST API, detect faces inside the image
using (var fileStream = File.OpenRead(pickedImagePath))
{
try
{
var faceServiceClient = FaceServiceClientHelper.GetInstance(this);
var faces = await faceServiceClient.Face.DetectWithStreamAsync(fileStream, recognitionModel : recognitionModel);
// Handle REST API calling error
if (faces == null)
{
return;
}
MainWindow.Log("Response: Success. Detected {0} face(s) in {1}", faces.Count, pickedImagePath);
// Convert detection results into UI binding object for rendering
foreach (var face in UIHelper.CalculateFaceRectangleForRendering(faces, MaxImageSize, imageInfo))
{
// Detected faces are hosted in result container, will be used in the verification later
RightFaceResultCollection.Add(face);
}
PersonVerifyButton.IsEnabled = (FacesCollection.Count != 0 && RightFaceResultCollection.Count != 0);
}
catch (APIErrorException ex)
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
return;
}
}
}
GC.Collect();
}
/// <summary>
/// Verify two detected faces, get whether these two faces belong to the same person
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event argument</param>
private async void Face2FaceVerification_Click(object sender, RoutedEventArgs e)
{
// Call face to face verification, verify REST API supports one face to one face verification only
// Here, we handle single face image only
if (LeftResultCollection.Count == 1 && RightResultCollection.Count == 1)
{
FaceVerifyResult = "Verifying...";
var faceId1 = LeftResultCollection[0].FaceId;
var faceId2 = RightResultCollection[0].FaceId;
MainWindow.Log("Request: Verifying face {0} and {1}", faceId1, faceId2);
// Call verify REST API with two face id
try
{
var faceServiceClient = FaceServiceClientHelper.GetInstance(this);
var res = await faceServiceClient.Face.VerifyFaceToFaceAsync(Guid.Parse(faceId1), Guid.Parse(faceId2));
// Verification result contains IsIdentical (true or false) and Confidence (in range 0.0 ~ 1.0),
// here we update verify result on UI by FaceVerifyResult binding
FaceVerifyResult = string.Format("Confidence = {0:0.00}, {1}", res.Confidence, res.IsIdentical ? "two faces belong to same person" : "two faces not belong to same person");
MainWindow.Log("Response: Success. Face {0} and {1} {2} to the same person", faceId1, faceId2, res.IsIdentical ? "belong" : "not belong");
}
catch (APIErrorException ex)
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
return;
}
}
else
{
MessageBox.Show("Verification accepts two faces as input, please pick images with only one detectable face in it.", "Warning", MessageBoxButton.OK);
}
GC.Collect();
}
/// <summary>
/// Pick image folder to detect faces and using these faces to create the person database
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void PersonImageFolderPicker_Click(object sender, RoutedEventArgs e)
{
bool groupExists = false;
var faceServiceClient = FaceServiceClientHelper.GetInstance(this);
// Test whether the group already exists
try
{
MainWindow.Log("Request: Group {0} will be used to build a person database. Checking whether the group exists.", GroupName);
await faceServiceClient.LargePersonGroup.GetAsync(GroupName);
groupExists = true;
MainWindow.Log("Response: Group {0} exists.", GroupName);
}
catch (APIErrorException ex)
{
if (ex.Body.Error.Code != "LargePersonGroupNotFound")
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
return;
}
else
{
MainWindow.Log("Response: Group {0} did not exist previously.", GroupName);
}
}
if (groupExists)
{
var cleanGroup = System.Windows.MessageBox.Show(string.Format("Requires a clean up for group \"{0}\" before setting up a new person database. Click OK to proceed, group \"{0}\" will be cleared.", GroupName), "Warning", MessageBoxButton.OKCancel);
if (cleanGroup == MessageBoxResult.OK)
{
await faceServiceClient.LargePersonGroup.DeleteAsync(GroupName);
PersonVerifyResult = string.Empty;
Person.Faces.Clear();
}
else
{
return;
}
}
// Show folder picker
System.Windows.Forms.FolderBrowserDialog dlg = new System.Windows.Forms.FolderBrowserDialog();
var result = dlg.ShowDialog();
// Set the suggestion count is intent to minimum the data preparation step only,
// it's not corresponding to service side constraint
const int SuggestionCount = 15;
if (result == System.Windows.Forms.DialogResult.OK)
{
FacesCollection.Clear();
PersonVerifyButton.IsEnabled = (FacesCollection.Count != 0 && RightFaceResultCollection.Count != 0);
// Call create large person group REST API
// Create large person group API call will failed if group with the same name already exists
MainWindow.Log("Request: Creating group \"{0}\"", GroupName);
try
{
await faceServiceClient.LargePersonGroup.CreateAsync(GroupName, GroupName, recognitionModel : recognitionModel);
MainWindow.Log("Response: Success. Group \"{0}\" created", GroupName);
}
catch (APIErrorException ex)
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
return;
}
int processCount = 0;
bool forceContinue = false;
MainWindow.Log("Request: Preparing person for verification, detecting faces in chosen folder.");
// Enumerate top level directories, each directory contains one person's images
var tasks = new List <Task>();
var tag = System.IO.Path.GetFileName(dlg.SelectedPath);
Person = new Person();
Person.PersonName = tag;
var faces = new ObservableCollection <Face>();
Person.Faces = faces;
// Call create person REST API, the new create person id will be returned
MainWindow.Log("Request: Creating person \"{0}\"", Person.PersonName);
Person.PersonId =
(await faceServiceClient.LargePersonGroupPerson.CreateAsync(GroupName, Person.PersonName)).PersonId.ToString();
MainWindow.Log("Response: Success. Person \"{0}\" (PersonID:{1}) created", Person.PersonName, Person.PersonId);
string img;
var imageList =
new ConcurrentBag <string>(
Directory.EnumerateFiles(dlg.SelectedPath, "*.*", SearchOption.AllDirectories)
.Where(s => s.ToLower().EndsWith(".jpg") || s.ToLower().EndsWith(".png") || s.ToLower().EndsWith(".bmp") || s.ToLower().EndsWith(".gif")));
// Enumerate images under the person folder, call detection
int invalidImageCount = 0;
while (imageList.TryTake(out img))
{
tasks.Add(Task.Factory.StartNew(
async(obj) =>
{
var imgPath = obj as string;
using (var fStream = File.OpenRead(imgPath))
{
try
{
var persistFace =
await
faceServiceClient.LargePersonGroupPerson.AddFaceFromStreamAsync(GroupName, Guid.Parse(Person.PersonId), fStream, imgPath);
return(new Tuple <string, PersistedFace>(imgPath, persistFace));
}
catch (APIErrorException ex)
{
// if operation conflict, retry.
if (ex.Body.Error.Code.Equals("ConcurrentOperationConflict"))
{
imageList.Add(imgPath);
return(null);
}
// if operation cause rate limit exceed, retry.
else if (ex.Body.Error.Code.Equals("RateLimitExceeded"))
{
imageList.Add(imgPath);
return(null);
}
else if (ex.Body.Error.Message.Contains("more than 1 face in the image."))
{
Interlocked.Increment(ref invalidImageCount);
}
// Here we simply ignore all detection failure in this sample
// You may handle these exceptions by check the Error.Error.Code and Error.Message property for ClientException object
return(new Tuple <string, PersistedFace>(imgPath, null));
}
}
},
img).Unwrap().ContinueWith((detectTask) =>
{
// Update detected faces for rendering
var detectionResult = detectTask?.Result;
if (detectionResult?.Item2 == null)
{
return;
}
this.Dispatcher.Invoke(
new Action
<ObservableCollection <Face>, string, PersistedFace>(
UIHelper.UpdateFace),
FacesCollection,
detectionResult.Item1,
detectionResult.Item2);
}));
processCount++;
if (processCount >= SuggestionCount && !forceContinue)
{
var continueProcess =
System.Windows.Forms.MessageBox.Show(
"The images loaded have reached the recommended count, may take long time if proceed. Would you like to continue to load images?",
"Warning", System.Windows.Forms.MessageBoxButtons.YesNo);
if (continueProcess == System.Windows.Forms.DialogResult.Yes)
{
forceContinue = true;
}
else
{
break;
}
}
if (tasks.Count >= _maxConcurrentProcesses || imageList.IsEmpty)
{
await Task.WhenAll(tasks);
tasks.Clear();
}
}
Person.Faces = FacesCollection;
PersonVerifyButton.IsEnabled = (FacesCollection.Count != 0 && RightFaceResultCollection.Count != 0);
if (invalidImageCount > 0)
{
MainWindow.Log("Warning: more or less than one face is detected in {0} images, can not add to face list.", invalidImageCount);
}
MainWindow.Log("Response: Success. Total {0} faces are detected.", Person.Faces.Count);
}
GC.Collect();
}
/// <summary>
/// Pick image, detect and identify all faces detected
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event arguments</param>
private async void Identify_Click(object sender, RoutedEventArgs e)
{
// Show file picker
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.DefaultExt = ".jpg";
dlg.Filter = "Image files(*.jpg, *.png, *.bmp, *.gif) | *.jpg; *.png; *.bmp; *.gif";
var result = dlg.ShowDialog();
if (result.HasValue && result.Value)
{
// User picked one image
// Clear previous detection and identification results
TargetFaces.Clear();
var pickedImagePath = dlg.FileName;
var renderingImage = UIHelper.LoadImageAppliedOrientation(pickedImagePath);
var imageInfo = UIHelper.GetImageInfoForRendering(renderingImage);
SelectedFile = renderingImage;
var sw = Stopwatch.StartNew();
var faceServiceClient = FaceServiceClientHelper.GetInstance(this);
// Call detection REST API
using (var fStream = File.OpenRead(pickedImagePath))
{
try
{
var faces = await faceServiceClient.Face.DetectWithStreamAsync(fStream, recognitionModel : recognitionModel, detectionModel : detectionModel);
// Convert detection result into UI binding object for rendering
foreach (var face in UIHelper.CalculateFaceRectangleForRendering(faces, MaxImageSize, imageInfo))
{
TargetFaces.Add(face);
}
MainWindow.Log("Request: Identifying {0} face(s) in group \"{1}\"", faces.Count, GroupName);
// Identify each face
// Call identify REST API, the result contains identified person information
var identifyResult = await faceServiceClient.Face.IdentifyAsync((from face in faces where face.FaceId != null select face.FaceId.Value).ToList(), null, GroupName);
for (int idx = 0; idx < faces.Count; idx++)
{
// Update identification result for rendering
var face = TargetFaces[idx];
var res = identifyResult[idx];
if (res.Candidates.Count > 0 && Persons.Any(p => p.PersonId == res.Candidates[0].PersonId.ToString()))
{
face.PersonName = Persons.Where(p => p.PersonId == res.Candidates[0].PersonId.ToString()).First().PersonName;
}
else
{
face.PersonName = "Unknown";
}
}
var outString = new StringBuilder();
foreach (var face in TargetFaces)
{
outString.AppendFormat("Face {0} is identified as {1}. ", face.FaceId, face.PersonName);
}
MainWindow.Log("Response: Success. {0}", outString);
}
catch (APIErrorException ex)
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
}
}
}
GC.Collect();
}
/// <summary>
/// Pick image folder and detect all faces in these images
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event arguments</param>
private async void FolderPicker_Click(object sender, RoutedEventArgs e)
{
bool groupExists = false;
var faceServiceClient = FaceServiceClientHelper.GetInstance(this);
try
{
MainWindow.Log("Request: Large Face List {0} will be used to build a person database. Checking whether the large face list exists.", _largeFaceListName);
await faceServiceClient.LargeFaceList.GetAsync(_largeFaceListName);
groupExists = true;
MainWindow.Log("Response: Large Face List {0} exists.", _largeFaceListName);
}
catch (APIErrorException ex)
{
if (ex.Body.Error.Code != "LargeFaceListNotFound")
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
return;
}
else
{
MainWindow.Log("Response: Large Face List {0} did not exist previously.", _largeFaceListName);
}
}
if (groupExists)
{
var cleanFaceList = System.Windows.MessageBox.Show(string.Format("Requires a clean up for large face list \"{0}\" before setting up a new large face list. Click OK to proceed, large face list \"{0}\" will be cleared.", _largeFaceListName), "Warning", MessageBoxButton.OKCancel);
if (cleanFaceList == MessageBoxResult.OK)
{
await faceServiceClient.LargeFaceList.DeleteAsync(_largeFaceListName);
}
else
{
return;
}
}
OpenFaceButton.IsEnabled = false;
// Show folder picker
System.Windows.Forms.FolderBrowserDialog dlg = new System.Windows.Forms.FolderBrowserDialog();
var result = dlg.ShowDialog();
bool forceContinue = false;
if (result == System.Windows.Forms.DialogResult.OK)
{
// Enumerate all ".jpg" files in the folder, call detect
List <Task> tasks = new List <Task>();
FacesCollection.Clear();
TargetFaces.Clear();
FindSimilarMatchPersonCollection.Clear();
FindSimilarMatchFaceCollection.Clear();
SelectedFile = null;
// Set the suggestion count is intent to minimum the data preparation step only,
// it's not corresponding to service side constraint
const int SuggestionCount = 10;
int processCount = 0;
MainWindow.Log("Request: Preparing, detecting faces in chosen folder.");
await faceServiceClient.LargeFaceList.CreateAsync(_largeFaceListName, _largeFaceListName, "large face list for sample");
var imageList =
new ConcurrentBag <string>(
Directory.EnumerateFiles(dlg.SelectedPath, "*.*", SearchOption.AllDirectories)
.Where(s => s.ToLower().EndsWith(".jpg") || s.ToLower().EndsWith(".png") || s.ToLower().EndsWith(".bmp") || s.ToLower().EndsWith(".gif")));
string img;
int invalidImageCount = 0;
while (imageList.TryTake(out img))
{
tasks.Add(Task.Factory.StartNew(
async(obj) =>
{
var imgPath = obj as string;
// Call detection
using (var fStream = File.OpenRead(imgPath))
{
try
{
var faces =
await faceServiceClient.LargeFaceList.AddFaceFromStreamAsync(_largeFaceListName, fStream);
return(new Tuple <string, PersistedFace>(imgPath, faces));
}
catch (APIErrorException ex)
{
// if operation conflict, retry.
if (ex.Body.Error.Code.Equals("ConcurrentOperationConflict"))
{
imageList.Add(imgPath);
return(null);
}
// if operation cause rate limit exceed, retry.
else if (ex.Body.Error.Code.Equals("RateLimitExceeded"))
{
imageList.Add(imgPath);
return(null);
}
else if (ex.Body.Error.Message.Contains("more than 1 face in the image."))
{
Interlocked.Increment(ref invalidImageCount);
}
// Here we simply ignore all detection failure in this sample
// You may handle these exceptions by check the Error.Error.Code and Error.Message property for ClientException object
return(new Tuple <string, PersistedFace>(imgPath, null));
}
}
},
img).Unwrap().ContinueWith((detectTask) =>
{
var res = detectTask?.Result;
if (res?.Item2 == null)
{
return;
}
// Update detected faces on UI
this.Dispatcher.Invoke(
new Action
<ObservableCollection <Face>, string, PersistedFace>(
UIHelper.UpdateFace),
FacesCollection,
res.Item1,
res.Item2);
}));
processCount++;
if (processCount >= SuggestionCount && !forceContinue)
{
var continueProcess =
System.Windows.Forms.MessageBox.Show(
"The images loaded have reached the recommended count, may take long time if proceed. Would you like to continue to load images?",
"Warning", System.Windows.Forms.MessageBoxButtons.YesNo);
if (continueProcess == System.Windows.Forms.DialogResult.Yes)
{
forceContinue = true;
}
else
{
break;
}
}
if (tasks.Count >= _maxConcurrentProcesses || imageList.IsEmpty)
{
await Task.WhenAll(tasks);
tasks.Clear();
}
}
if (invalidImageCount > 0)
{
MainWindow.Log("Warning: more or less than one face is detected in {0} images, can not add to large face list.", invalidImageCount);
}
MainWindow.Log("Response: Success. Total {0} faces are detected.", FacesCollection.Count);
try
{
// Start to train the large face list.
MainWindow.Log("Request: Training large face list \"{0}\"", _largeFaceListName);
await faceServiceClient.LargeFaceList.TrainAsync(_largeFaceListName);
// Wait until the training is completed.
while (true)
{
await Task.Delay(1000);
var trainingStatus = await faceServiceClient.LargeFaceList.GetTrainingStatusAsync(_largeFaceListName);
MainWindow.Log("Response: {0}. Large face list \"{1}\" training process is {2}", "Success", _largeFaceListName, trainingStatus.Status);
if (trainingStatus.Status != TrainingStatusType.Running)
{
if (trainingStatus.Status == TrainingStatusType.Failed)
{
MainWindow.Log("Response: Training failed with message {0}.", trainingStatus.Message);
}
break;
}
}
OpenFaceButton.IsEnabled = true;
}
catch (APIErrorException ex)
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
}
}
GC.Collect();
}
/// <summary>
/// Pick image and call find similar with both two modes for each faces detected
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event arguments</param>
private async void FindSimilar_Click(object sender, RoutedEventArgs e)
{
// Show file picker
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.DefaultExt = ".jpg";
dlg.Filter = "Image files (*.jpg, *.png, *.bmp, *.gif) | *.jpg; *.png; *.bmp; *.gif";
var filePicker = dlg.ShowDialog();
if (filePicker.HasValue && filePicker.Value)
{
// User picked image
// Clear previous detection and find similar results
TargetFaces.Clear();
FindSimilarMatchPersonCollection.Clear();
FindSimilarMatchFaceCollection.Clear();
var sw = Stopwatch.StartNew();
var pickedImagePath = dlg.FileName;
var renderingImage = UIHelper.LoadImageAppliedOrientation(pickedImagePath);
var imageInfo = UIHelper.GetImageInfoForRendering(renderingImage);
SelectedFile = renderingImage;
// Detect all faces in the picked image
using (var fStream = File.OpenRead(pickedImagePath))
{
MainWindow.Log("Request: Detecting faces in {0}", SelectedFile);
var faceServiceClient = FaceServiceClientHelper.GetInstance(this);
IList <DetectedFace> faces = await faceServiceClient.Face.DetectWithStreamAsync(fStream);
// Update detected faces on UI
foreach (var face in UIHelper.CalculateFaceRectangleForRendering(faces, MaxImageSize, imageInfo))
{
TargetFaces.Add(face);
}
MainWindow.Log("Response: Success. Detected {0} face(s) in {1}", faces.Count, SelectedFile);
// Find two modes similar faces for each face
foreach (var f in faces)
{
if (f.FaceId == null)
{
continue;
}
var faceId = f.FaceId.Value;
MainWindow.Log("Request: Finding similar faces in Personal Match Mode for face {0}", faceId);
try
{
// Default mode, call find matchPerson similar REST API, the result contains all the face ids which is personal similar to the query face
const int requestCandidatesCount = 4;
IList <SimilarFace> result = await faceServiceClient.Face.FindSimilarAsync(
faceId,
null,
_largeFaceListName,
maxNumOfCandidatesReturned : requestCandidatesCount);
// Update find matchPerson similar results collection for rendering
var personSimilarResult = new FindSimilarResult();
personSimilarResult.Faces = new ObservableCollection <Face>();
personSimilarResult.QueryFace = new Face()
{
ImageFile = SelectedFile,
Top = f.FaceRectangle.Top,
Left = f.FaceRectangle.Left,
Width = f.FaceRectangle.Width,
Height = f.FaceRectangle.Height,
FaceId = faceId.ToString(),
};
foreach (var fr in result)
{
var candidateFace = FacesCollection.First(ff => ff.FaceId == fr.PersistedFaceId.ToString());
Face newFace = new Face();
newFace.ImageFile = candidateFace.ImageFile;
newFace.Confidence = fr.Confidence;
newFace.FaceId = candidateFace.FaceId;
personSimilarResult.Faces.Add(newFace);
}
MainWindow.Log("Response: Found {0} similar faces for face {1}", personSimilarResult.Faces.Count, faceId);
FindSimilarMatchPersonCollection.Add(personSimilarResult);
}
catch (APIErrorException ex)
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
}
try
{
// Call find facial match similar REST API, the result faces the top N with the highest similar confidence
const int requestCandidatesCount = 4;
var result = await faceServiceClient.Face.FindSimilarAsync(
faceId,
null,
_largeFaceListName,
maxNumOfCandidatesReturned : requestCandidatesCount,
mode : FindSimilarMatchMode.MatchFace);
// Update "matchFace" similar results collection for rendering
var faceSimilarResults = new FindSimilarResult();
faceSimilarResults.Faces = new ObservableCollection <Face>();
faceSimilarResults.QueryFace = new Face()
{
ImageFile = SelectedFile,
Top = f.FaceRectangle.Top,
Left = f.FaceRectangle.Left,
Width = f.FaceRectangle.Width,
Height = f.FaceRectangle.Height,
FaceId = faceId.ToString(),
};
foreach (var fr in result)
{
var candidateFace = FacesCollection.First(ff => ff.FaceId == fr.PersistedFaceId.ToString());
Face newFace = new Face();
newFace.ImageFile = candidateFace.ImageFile;
newFace.Confidence = fr.Confidence;
newFace.FaceId = candidateFace.FaceId;
faceSimilarResults.Faces.Add(newFace);
}
MainWindow.Log("Response: Found {0} similar faces for face {1}", faceSimilarResults.Faces.Count, faceId);
FindSimilarMatchFaceCollection.Add(faceSimilarResults);
}
catch (APIErrorException ex)
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
}
}
}
}
GC.Collect();
}
/// <summary>
/// Pick folder, then group detected faces by similarity
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event arguments</param>
private async void Grouping_Click(object sender, RoutedEventArgs e)
{
// Show folder picker
System.Windows.Forms.FolderBrowserDialog dlg = new System.Windows.Forms.FolderBrowserDialog();
var result = dlg.ShowDialog();
// Set the suggestion count is intent to minimum the data preparation step only,
// it's not corresponding to service side constraint
const int SuggestionCount = 10;
if (result == System.Windows.Forms.DialogResult.OK)
{
// User picked one folder
List <Task> tasks = new List <Task>();
int processCount = 0;
bool forceContinue = false;
// Clear previous grouping result
GroupedFaces.Clear();
Faces.Clear();
var faceServiceClient = FaceServiceClientHelper.GetInstance(this);
MainWindow.Log("Request: Preparing faces for grouping, detecting faces in chosen folder.");
var imageList =
new ConcurrentBag <string>(
Directory.EnumerateFiles(dlg.SelectedPath, "*.*", SearchOption.AllDirectories)
.Where(s => s.ToLower().EndsWith(".jpg") || s.ToLower().EndsWith(".png") || s.ToLower().EndsWith(".bmp") || s.ToLower().EndsWith(".gif")));
string img;
while (imageList.TryTake(out img))
{
tasks.Add(Task.Factory.StartNew(
async(obj) =>
{
var imgPath = obj as string;
// Detect faces in image
using (var fStream = File.OpenRead(imgPath))
{
try
{
var faces = await faceServiceClient.Face.DetectWithStreamAsync(fStream);
return(new Tuple <string, IList <DetectedFace> >(imgPath, faces));
}
catch (APIErrorException ex)
{
// if operation conflict, retry.
if (ex.Body.Error.Code.Equals("ConcurrentOperationConflict"))
{
imageList.Add(imgPath);
return(null);
}
// Here we simply ignore all detection failure in this sample
// You may handle these exceptions by check the Error.Error.Code and Error.Message property for ClientException object
return(new Tuple <string, IList <DetectedFace> >(imgPath, null));
}
}
},
img).Unwrap().ContinueWith((detectTask) =>
{
// Update detected faces on UI
var res = detectTask?.Result;
if (res?.Item2 == null)
{
return;
}
foreach (var f in res.Item2)
{
this.Dispatcher.Invoke(
new Action <ObservableCollection <Face>, string, DetectedFace>(UIHelper.UpdateFace),
Faces,
res.Item1,
f);
}
}));
if (processCount >= SuggestionCount && !forceContinue)
{
var continueProcess = System.Windows.Forms.MessageBox.Show("Found many images under chosen folder, may take long time if proceed. Continue?", "Warning", System.Windows.Forms.MessageBoxButtons.YesNo);
if (continueProcess == System.Windows.Forms.DialogResult.Yes)
{
forceContinue = true;
}
else
{
break;
}
}
if (tasks.Count >= _maxConcurrentProcesses || imageList.IsEmpty)
{
await Task.WhenAll(tasks);
tasks.Clear();
}
}
MainWindow.Log("Response: Success. Total {0} faces are detected.", Faces.Count);
try
{
MainWindow.Log("Request: Grouping {0} faces.", Faces.Count);
// Call grouping, the grouping result is a group collection, each group contains similar faces
var groupRes = await faceServiceClient.Face.GroupAsync(Faces.Select(f => Guid.Parse(f.FaceId)).ToArray());
// Update grouping results for rendering
foreach (var g in groupRes.Groups)
{
var gg = new GroupingResult()
{
Faces = new ObservableCollection <Face>(),
IsMessyGroup = false,
};
foreach (var fr in g)
{
gg.Faces.Add(Faces.First(f => f.FaceId == fr.ToString()));
}
GroupedFaces.Add(gg);
}
// MessyGroup contains all faces which are not similar to any other faces.
// Take an extreme case for example:
// On grouping faces which are not similar to any other faces, the grouping result will contains only one messy group
if (groupRes.MessyGroup.Count > 0)
{
var messyGroup = new GroupingResult()
{
Faces = new ObservableCollection <Face>(),
IsMessyGroup = true
};
foreach (var messy in groupRes.MessyGroup)
{
messyGroup.Faces.Add(Faces.First(f => f.FaceId == messy.ToString()));
}
GroupedFaces.Add(messyGroup);
}
MainWindow.Log("Response: Success. {0} faces are grouped into {1} groups.", Faces.Count, GroupedFaces.Count);
}
catch (APIErrorException ex)
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
}
}
GC.Collect();
}
/// <summary>
/// Pick image for face detection and set detection result to result container
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event argument</param>
private async void ImagePicker_Click(object sender, RoutedEventArgs e)
{
// Show file picker dialog
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.DefaultExt = ".jpg";
dlg.Filter = "Image files (*.jpg, *.png, *.bmp, *.gif) | *.jpg; *.png; *.bmp; *.gif";
var result = dlg.ShowDialog();
if (result.HasValue && result.Value)
{
// User picked one image
var pickedImagePath = dlg.FileName;
var renderingImage = UIHelper.LoadImageAppliedOrientation(pickedImagePath);
var imageInfo = UIHelper.GetImageInfoForRendering(renderingImage);
SelectedFile = renderingImage;
// Clear last detection result
ResultCollection.Clear();
DetectedFaces.Clear();
DetectedResultsInText = string.Format("Detecting...");
MainWindow.Log("Request: Detecting {0}", pickedImagePath);
var sw = Stopwatch.StartNew();
// Call detection REST API
using (var fStream = File.OpenRead(pickedImagePath))
{
try
{
var faceServiceClient = FaceServiceClientHelper.GetInstance(this);
IList <DetectedFace> faces = await faceServiceClient.Face.DetectWithStreamAsync(
fStream,
false,
true,
new List <FaceAttributeType>()
{
FaceAttributeType.Accessories,
FaceAttributeType.Age,
FaceAttributeType.Blur,
FaceAttributeType.Emotion,
FaceAttributeType.Exposure,
FaceAttributeType.FacialHair,
FaceAttributeType.Gender,
FaceAttributeType.Glasses,
FaceAttributeType.Hair,
FaceAttributeType.HeadPose,
FaceAttributeType.Makeup,
FaceAttributeType.Noise,
FaceAttributeType.Occlusion,
FaceAttributeType.Smile
},
recognitionModel
);
MainWindow.Log("Response: Success. Detected {0} face(s) in {1}", faces.Count, pickedImagePath);
DetectedResultsInText = string.Format("{0} face(s) has been detected", faces.Count);
foreach (var face in faces)
{
DetectedFaces.Add(new Face()
{
ImageFile = renderingImage,
Left = face.FaceRectangle.Left,
Top = face.FaceRectangle.Top,
Width = face.FaceRectangle.Width,
Height = face.FaceRectangle.Height,
FaceId = face.FaceId?.ToString(),
Age = string.Format("{0:#} years old", face.FaceAttributes.Age),
Gender = face.FaceAttributes.Gender.ToString(),
HeadPose = string.Format("Pitch: {0}, Roll: {1}, Yaw: {2}", Math.Round(face.FaceAttributes.HeadPose.Pitch, 2), Math.Round(face.FaceAttributes.HeadPose.Roll, 2), Math.Round(face.FaceAttributes.HeadPose.Yaw, 2)),
FacialHair = string.Format("FacialHair: {0}", face.FaceAttributes.FacialHair.Moustache + face.FaceAttributes.FacialHair.Beard + face.FaceAttributes.FacialHair.Sideburns > 0 ? "Yes" : "No"),
Glasses = string.Format("GlassesType: {0}", face.FaceAttributes.Glasses.ToString()),
Emotion = $"{GetEmotion(face.FaceAttributes.Emotion)}",
Hair = string.Format("Hair: {0}", GetHair(face.FaceAttributes.Hair)),
Makeup = string.Format("Makeup: {0}", ((face.FaceAttributes.Makeup.EyeMakeup || face.FaceAttributes.Makeup.LipMakeup) ? "Yes" : "No")),
EyeOcclusion = string.Format("EyeOccluded: {0}", ((face.FaceAttributes.Occlusion.EyeOccluded) ? "Yes" : "No")),
ForeheadOcclusion = string.Format("ForeheadOccluded: {0}", (face.FaceAttributes.Occlusion.ForeheadOccluded ? "Yes" : "No")),
MouthOcclusion = string.Format("MouthOccluded: {0}", (face.FaceAttributes.Occlusion.MouthOccluded ? "Yes" : "No")),
Accessories = $"{GetAccessories(face.FaceAttributes.Accessories)}",
Blur = string.Format("Blur: {0}", face.FaceAttributes.Blur.BlurLevel.ToString()),
Exposure = string.Format("{0}", face.FaceAttributes.Exposure.ExposureLevel.ToString()),
Noise = string.Format("Noise: {0}", face.FaceAttributes.Noise.NoiseLevel.ToString()),
});
}
// Convert detection result into UI binding object for rendering
foreach (var face in UIHelper.CalculateFaceRectangleForRendering(faces, MaxImageSize, imageInfo))
{
ResultCollection.Add(face);
}
}
catch (APIErrorException ex)
{
MainWindow.Log("Response: {0}. {1}", ex.Body.Error.Code, ex.Body.Error.Message);
GC.Collect();
return;
}
GC.Collect();
}
}
}