public DictionaryFaceDatabase(IFaceInfo <TTemplate> baseInstance = null, IEnumerable <KeyValuePair <int, IFaceInfo <TTemplate> > > initialDb = null)
{
if (baseInstance == null)
{
// if no IFaceInfo base instance is supplied, find a suitable type using reflection
var firstType = (from t in Assembly.GetExecutingAssembly().GetExportedTypes()
where !t.IsAbstract && !t.IsInterface && typeof(IFaceInfo <TTemplate>).IsAssignableFrom(t) && t.GetConstructor(Type.EmptyTypes) != null
select t)
.FirstOrDefault();
if (firstType != null)
{
_baseFaceInfo = (IFaceInfo <TTemplate>)Activator.CreateInstance(firstType);
}
else
{
throw new ApplicationException($"No suitable class implementing {typeof(IFaceInfo<TTemplate>)} found");
}
}
else
{
_baseFaceInfo = baseInstance;
}
_storedFaces = initialDb == null
? new ConcurrentDictionary <int, IFaceInfo <TTemplate> >()
: new ConcurrentDictionary <int, IFaceInfo <TTemplate> >(initialDb);
}
public Match(int faceId, float similarity, FaceSnapshot <TTemplate> snapshot, IFaceInfo <TTemplate> faceInfo, bool isValid = true)
{
FaceId = faceId;
Similarity = similarity;
Snapshot = snapshot;
FaceInfo = faceInfo;
IsValid = isValid;
}
/// <summary>
/// Will do nothing if a face the same <paramref name="id"/> is already in the database
/// </summary>
/// <param name="info"></param>
/// <param name="id"></param>
/// <returns><c>true</c> if successful</returns>
public bool TryAddNewFace(int id, IFaceInfo <TTemplate> info)
{
bool ret = _storedFaces.TryAdd(id, info);
if (ret)
{
UpdateNextId(id);
}
return(ret);
}
public void Add(int id, IFaceInfo <TTemplate> faceInfo)
{
if (_storedFaces.TryGetValue(id, out var targetFaceInfo))
{
targetFaceInfo.Merge(faceInfo);
}
else
{
_storedFaces[id] = faceInfo;
UpdateNextId(id);
}
}
public FaceDatabaseDeserializer(IFaceInfo <TTemplate> faceInfoBaseInstance, DictionaryFaceDatabase <TTemplate> db)
{
_faceInfoBaseInstance = faceInfoBaseInstance;
_db = db;
}
public bool TryGetValue(int id, out IFaceInfo <TTemplate> faceInfo)
{
return(_storedFaces.TryGetValue(id, out faceInfo));
}