private void RemoveFace(HSPerson person, HSFace face)
{
_faceIdToFace.Remove(face.Id);
_faceNameToFace.Remove(face.ImageFile);
_personFacesDict[person.Id].Remove(face.Id);
}
private void AddFace(HSPerson person, Guid faceId, string faceImageFile)
{
// create new face and add to dictionaries
var face = new HSFace(faceId, faceImageFile);
_faceIdToFace.Add(faceId, face);
_faceNameToFace.Add(faceImageFile, face);
// add face id to face list of the person
var faceList = _personFacesDict[person.Id];
faceList.Add(faceId);
}