private static async Task IngestionPipeline()
{
Console.WriteLine("\n Ingestion Pipeline");
Console.WriteLine("\n Enter new image url:");
string img = Console.ReadLine();
Console.WriteLine("\n Enter Large Face List ID:");
string faceListID = Console.ReadLine();
try
{
List <Face> detectedFaces = await FaceAPIHelpers.DetectFaces(img, true);
foreach (Face f in detectedFaces)
{
try
{
PersistedFace persistedFace = await FaceAPIHelpers.AddFace(img, faceListID, f.faceRectangle);
Console.WriteLine("\n Face " + persistedFace.persistedFaceId + " added.");
}
catch (Exception e)
{
Console.WriteLine($"\n{e.GetType().Name}: Could not add face to Large Face List.");
throw (e);
}
}
try
{
await FaceAPIHelpers.TrainFaceList(faceListID);
}
catch (Exception e)
{
Console.WriteLine($"\n{e.GetType().Name}: Could not train Large Face List.");
throw (e);
}
}
catch (Exception e)
{
Console.WriteLine($"\n{e.GetType().Name}: Could not detect faces.");
throw (e);
}
AskUser();
}
/// <summary>
/// LargeFaceList - Add Face API: adds a face to a Large Face List
/// If several faces are in the given image, the target rectangle must be provided
/// </summary>
public static async Task <PersistedFace> AddFace(string img, string faceListID, Rectangle target = null, string userData = "")
{
Console.WriteLine("\n Adding face to Large Face List...");
string uri = "https://westeurope.api.cognitive.microsoft.com/face/v1.0/largefacelists/" + faceListID + "/persistedfaces";
if (userData != "" || target != null)
{
uri += "?";
}
if (userData != "")
{
uri += "userData=";
uri += userData;
}
if (target != null)
{
if (userData != "")
{
uri += "&";
}
uri += "targetFace=";
uri += target.left;
uri += ",";
uri += target.top;
uri += ",";
uri += target.width;
uri += ",";
uri += target.height;
}
string response = null;
PersistedFace result = null;
try
{
response = await RequestHelpers.PostRequest(uri, new JsonContent(new
{
url = img
}));
Console.WriteLine($"\nFace added to Large Face List.");
}
catch (Exception e)
{
Console.WriteLine($"\n{e.GetType().Name}: Error adding face to Large Face List.");
throw;
}
if (response != null)
{
try
{
result = JsonConvert.DeserializeObject <PersistedFace>(response);
}
catch (Exception e)
{
Console.WriteLine($"\n{e.GetType().Name}: Error parsing response after adding face to Large Face List.");
throw;
}
}
return(result);
}
