private async void AddFace()
{
if (SelectedImage == -1)
{
return;
}
if (string.IsNullOrWhiteSpace(UsernameText))
{
return;
}
var selectedImage = PreviewImages[SelectedImage];
var addedFaceData = await RecognitionData.InsertFace(selectedImage.Original, selectedImage.Grayframe, UsernameText);
if (addedFaceData.FaceId != -1)
{
ResultText = $"Success: ID {addedFaceData.FaceId}";
PreviewImages.Clear();
PreviewHeaderVisible = false;
UsernameText = "";
}
else
{
ResultText = "Error!";
}
await Task.Delay(3000);
ResultText = "";
}
private void OnRecognition(IntPtr data)
{
/* Custom Marshalling */
RecognitionData data2 = new RecognitionData();
data2.timeStamp = Marshal.ReadInt64(data, 0);
data2.grammar = Marshal.ReadInt32(data, 8);
data2.duration = Marshal.ReadInt32(data, 12);
Int64 addr = data.ToInt64() + 16;
for (int i = 0; i < NBEST_SIZE; i++)
{
Marshal.PtrToStructure(new IntPtr(addr), data2.scores[i]);
addr += Marshal.SizeOf(typeof(NBest));
}
handler.onRecognition(data2);
}
private void OnRecognition(IntPtr data)
{
/* Custom Marshalling */
RecognitionData data2 = new RecognitionData();
data2.timeStamp = Marshal.ReadInt64(data, 0);
data2.grammar = Marshal.ReadInt32(data, 8);
data2.duration = Marshal.ReadInt32(data, 12);
Int64 addr = data.ToInt64() + 16;
for (int i = 0; i < NBEST_SIZE; i++)
{
Marshal.PtrToStructure(new IntPtr(addr), data2.scores[i]);
addr += Marshal.SizeOf(typeof(NBest));
}
handler.onRecognition(data2);
}
private void RecognizeUser(ref Image <Bgr, byte> original, Image <Gray, byte> grayframe, Rectangle rectangle)
{
grayframe.ROI = rectangle;
var size = Properties.Settings.Default.RecognitionImageSize;
try
{
var id = RecognitionEngine.RecognizeUser(grayframe.Copy().Resize(size, size, Inter.Cubic));
if (id > 0)
{
var user = RecognitionData.GetUser(id);
if (user != null)
{
original.Draw(user.Username, new Point(rectangle.Left, rectangle.Top - 10), FontFace.HersheyPlain, 2, new Bgr(Color.DarkTurquoise));
}
}
}
catch (CvException)
{
// ignored
}
}
