/// <summary>
/// Saves a thumbnail from a source image, using the Face's FaceRectangle and ThumbnailPath.
/// </summary>
/// <param name="face">The Face to save a thumbnail for.</param>
/// <param name="sourceImage">The source image where the thumbnail will be cropped from.</param>
public static void SaveThumbnailFromSource(this Model.Face face, UIImage sourceImage)
{
using (var thumbnail = face.CreateThumbnail(sourceImage))
{
face.SaveThumbnail(thumbnail);
}
}
async Task AddFace(Model.Face face)
{
try
{
this.ShowHUD("Adding face");
await FaceClient.Shared.AddFaceForPerson(Person, Group, face, SourceImage.AsJpegStream);
face.SaveThumbnailFromSource(SourceImage);
//we should be done with the source image now
SourceImage.Dispose();
SourceImage = null;
this.ShowSimpleHUD("Face added for this person");
PersonFaceCVC.CollectionView.ReloadData();
FaceState.Current.NeedsTraining = true;
}
catch (Exception)
{
this.HideHUD().ShowSimpleAlert("Failed to add face.");
}
}
public void SetFace(Model.Face face, UIImage thumbnail)
{
TitleLabel.Text = face.Id;
SizeLabel.Text = $"Position: {face.FaceRectangle.Left}, {face.FaceRectangle.Top}; Size: {face.FaceRectangle.Width}x{face.FaceRectangle.Height}";
var attrs = face.Attributes;
if (attrs != null)
{
AgeLabel.Text = $"Age: {attrs.Age}";
GenderLabel.Text = $"Gender: {attrs.Gender}";
HairLabel.Text = attrs.Hair?.ToString();
SmileLabel.Text = $"Smile Intensity: {attrs.SmileIntensity}";
FacialHairLabel.Text = attrs.FacialHair?.ToString();
GlassesLabel.Text = $"Glasses: {attrs.Glasses}";
EmotionLabel.Text = attrs.Emotion?.ToString();
MakeupLabel.Text = attrs.Makeup?.ToString();
HeadPoseLabel.Text = attrs.HeadPose?.ToString();
AccessoriesLabel.Text = attrs.Accessories?.ToString();
OcclusionLabel.Text = attrs.Occlusion?.ToString();
BlurLabel.Text = attrs.Blur?.ToString();
NoiseLabel.Text = attrs.Noise?.ToString();
ExposureLabel.Text = attrs.Exposure?.ToString();
}
FaceImageView.ContentMode = UIViewContentMode.ScaleAspectFit;
FaceImageView.Image = thumbnail;
}
/// <summary>
/// Gets the thumbnail image for the given Face. This assumes the thumbnail has already been saved using the <see cref="SaveThumbnail"/> method.
/// </summary>
/// <returns>The thumbnail image.</returns>
/// <param name="face">Face.</param>
public static Bitmap GetThumbnailImage(this Model.Face face)
{
if (!string.IsNullOrEmpty(face.ThumbnailPath))
{
return(BitmapFactory.DecodeFile(face.ThumbnailPath));
}
return(null);
}
public UIImage GetThumbnailForFace(Model.Face face)
{
var index = Faces.IndexOf(face);
if (index > -1 && thumbnailImages.Count > index)
{
return(thumbnailImages [index]);
}
return(null);
}
internal static Model.Face ToFace(this Droid.Contract.PersonFace personFace)
{
var face = new Model.Face
{
Id = personFace.PersistedFaceId.ToString(),
UserData = personFace.UserData
};
face.UpdateThumbnailPath();
return(face);
}
internal static Model.Face ToFace(this MPOPersonFace mpoFace)
{
var face = new Model.Face
{
Id = mpoFace.PersistedFaceId,
UserData = mpoFace.UserData
};
face.UpdateThumbnailPath();
return(face);
}
private static Face MapToDomain(this Model.Face f)
{
return(new Face
{
Id = f.id,
Name = f.name,
Confidence = f.confidence,
Description = f.description,
Title = f.title,
ThumbnailUrl = f.thumbnailFullUrl,
SeenDuration = f.seenDuration,
SeenDurationRatio = f.seenDurationRatio,
Appearances = f.appearances?.Select(MapToDomain).ToList(),
});
}
internal static Model.Face ToFace(this Droid.Contract.Face thisFace, bool adaptLandmarks = false, FaceAttributeType [] attributes = null)
{
var thatFace = new Model.Face
{
Id = thisFace.FaceId.ToString(),
FaceRectangle = thisFace.FaceRectangle.ToFaceRectangle(),
Attributes = thisFace.FaceAttributes?.ToFaceAttributes(attributes)
};
if (adaptLandmarks)
{
thatFace.Landmarks = thisFace.FaceLandmarks?.ToFaceLandmarks();
}
thatFace.UpdateThumbnailPath();
return(thatFace);
}
internal static Model.Face ToFace(this MPOFace mpoFace, bool adaptLandmarks = false, FaceAttributeType [] attributes = null)
{
var face = new Model.Face
{
Id = mpoFace.FaceId,
FaceRectangle = mpoFace.FaceRectangle.ToFaceRectangle(),
Attributes = mpoFace.Attributes?.ToFaceAttributes(attributes)
};
if (adaptLandmarks)
{
face.Landmarks = mpoFace.FaceLandmarks?.ToFaceLandmarks();
}
face.UpdateThumbnailPath();
return(face);
}
async Task ExecuteDeleteFace(Model.Face face)
{
//progressDialog.Show ();
AddLog("Request: Deleting face " + face.Id);
try
{
//progressDialog.SetMessage ("Deleting selected faces...");
SetInfo("Deleting selected faces...");
await FaceClient.Shared.DeletePersonFace(Person, Group, face);
SetInfo("Face " + face.Id + " successfully deleted");
AddLog("Response: Success. Deleting face " + face.Id + " succeed");
}
catch (Exception e)
{
AddLog(e.Message);
SetInfo("Error deleting face with Id " + face.Id);
}
//progressDialog.Dismiss ();
}
/// <summary>
/// Resize face rectangle, for better view of the person.
/// To make the rectangle larger, faceRectEnlargeRatio should be larger than 1, recommended value (and default) is 1.3.
/// </summary>
/// <returns>The resized face rectangle.</returns>
/// <param name="face">The Face to calculate a new face renctagle for.</param>
/// <param name="bitmap">the source Bitmap.</param>
/// <param name="faceRectEnlargeRatio">Face rect enlarge ratio.</param>
public static System.Drawing.RectangleF CalculateLargeFaceRectangle(this Model.Face face, Bitmap bitmap, double faceRectEnlargeRatio = FACE_RECT_SCALE_RATIO)
{
// Get the resized side length of the face rectangle
double sideLength = face.FaceRectangle.Width * faceRectEnlargeRatio;
sideLength = Math.Min(sideLength, bitmap.Width);
sideLength = Math.Min(sideLength, bitmap.Height);
// Make the left edge to left more.
double left = face.FaceRectangle.Left - face.FaceRectangle.Width * (faceRectEnlargeRatio - 1.0) * 0.5;
left = Math.Max(left, 0.0);
left = Math.Min(left, bitmap.Width - sideLength);
// Make the top edge to top more.
double top = face.FaceRectangle.Top - face.FaceRectangle.Height * (faceRectEnlargeRatio - 1.0) * 0.5;
top = Math.Max(top, 0.0);
top = Math.Min(top, bitmap.Height - sideLength);
// Shift the top edge to top more, for better view for human
double shiftTop = faceRectEnlargeRatio - 1.0;
shiftTop = Math.Max(shiftTop, 0.0);
shiftTop = Math.Min(shiftTop, 1.0);
top -= 0.15 * shiftTop * face.FaceRectangle.Height;
top = Math.Max(top, 0.0);
return(new System.Drawing.RectangleF
{
X = (int)left,
Y = (int)top,
Width = (int)sideLength,
Height = (int)sideLength
});
}
/// <summary>
/// Gets the thumbnail image for the given Face. This assumes the thumbnail has already been saved using the <see cref="SaveThumbnail"/> method.
/// </summary>
/// <returns>The thumbnail image.</returns>
/// <param name="face">Face.</param>
public static UIImage GetThumbnailImage(this Model.Face face)
{
return(UIImage.FromFile(face.ThumbnailPath));
}
/// <summary>
/// Updates the thumbnail path of the Face. This will use the current Id to generate the thumbnail path for this Face.
/// </summary>
/// <param name="face">The <see cref="Face"/>.</param>
public static void UpdateThumbnailPath(this Model.Face face)
{
var filePath = Path.Combine(DocsDir, face.FileName);
face.ThumbnailPath = filePath;
}
/// <summary>
/// Saves the thumbnail image using the Face's current thumbnail path.
/// </summary>
/// <param name="face">Face.</param>
/// <param name="thumbnail">Thumbnail image.</param>
public static void SaveThumbnail(this Model.Face face, UIImage thumbnail)
{
face.UpdateThumbnailPath();
thumbnail.SaveAsJpeg(face.ThumbnailPath);
}
/// <summary>
/// Creates a thumbnail image for a given Face.
/// </summary>
/// <returns>The thumbnail image.</returns>
/// <param name="face">The Face to generate a thumbnail for.</param>
/// <param name="sourceImage">The source image or photo to crop the thumbnail from.</param>
public static UIImage CreateThumbnail(this Model.Face face, UIImage sourceImage)
{
return(sourceImage.Crop(face.FaceRectangle.ToRectangle()));
}
public void SetFaceImage(Model.Face face, UIImage image)
{
this.face = face;
FaceImageView.Image = image;
}
/// <summary>
/// Creates a thumbnail image for a given Face.
/// </summary>
/// <returns>The thumbnail image.</returns>
/// <param name="face">The Face to generate a thumbnail for.</param>
/// <param name="sourceImage">The source image or photo to crop the thumbnail from.</param>
public static Bitmap CreateThumbnail(this Model.Face face, Bitmap sourceImage)
{
var largeFaceRect = face.CalculateLargeFaceRectangle(sourceImage);
return(sourceImage.Crop(largeFaceRect));
}