/// <summary> Function which submits a frame to the Face API. </summary>
/// <param name="frame"> The video frame to submit. </param>
/// <returns> A <see cref="Task{LiveCameraResult}"/> representing the asynchronous API call,
/// and containing the faces returned by the API. </returns>
private async Task <LiveCameraResult> FacesAnalysisFunction(VideoFrame frame)
{
// Encode image.
var jpg = frame.Image.ToMemoryStream(".jpg", s_jpegParams);
// Submit image to API.
var detectWithStreamCmd = new DetectWithStreamCmd();
var faces = await detectWithStreamCmd.DetectWithStreamAsync(jpg);
// Count the API call.
Properties.Settings.Default.FaceAPICallCount++;
// Output.
return(new LiveCameraResult {
Faces = faces.ToArray(), VideoFrame = frame
});
}
public async Task <bool> FindSimilar(LiveCameraResult liveCameraResult)
{
try
{
if (string.IsNullOrWhiteSpace(DocumentImagePath))
{
return(false);
}
IList <Guid?> targetFaceIds = new List <Guid?>();
using (var jpg = File.OpenRead(DocumentImagePath))
{
// Detect faces from load image.
var detectWithStreamCmd = new DetectWithStreamCmd();
var faces = await detectWithStreamCmd.DetectWithStreamAsync(jpg);
//// Add detected faceId to list of GUIDs.
if (faces.Count <= 0)
{
MessageArea.Text = $"No se detectaron rostros en la imagen.";
return(false);
}
targetFaceIds.Add(faces[0].FaceId.Value);
}
var verifyFaceToFaceCmd = new VerifyFaceToFaceCmd();
var similarResults = await verifyFaceToFaceCmd.VerifyFaceToFaceAsync(liveCameraResult.Faces.First().FaceId.Value, targetFaceIds.First().Value);
if (similarResults.IsIdentical)
{
RightImage.Source = VisualizeResult(liveCameraResult.VideoFrame);
MessageArea.Text = $"Los rostros son similares con una confianza de: {similarResults.Confidence}.";
return(true);
}
else
{
MessageArea.Text = $"Los rostros no son identicos.";
return(true);
}
}
catch (Exception ex)
{
MessageArea.Text = $"Se ha presentado un error: {ex.Message}";
return(false);
}
}
