/// <summary>
/// Initializes Oxford API. Builds existing whitelist or creates one if one does not exist.
/// </summary>
public async static Task <bool> InitializeOxford()
{
// Attempts to open whitelist folder, or creates one
StorageFolder whitelistFolder = await KnownFolders.PicturesLibrary.CreateFolderAsync(GeneralConstants.WhiteListFolderName, CreationCollisionOption.OpenIfExists);
// Creates a new instance of the Oxford API Controller
FaceApiRecognizer sdkController = FaceApiRecognizer.Instance;
// Attempts to open whitelist ID file, or creates one
StorageFile WhiteListIdFile = await whitelistFolder.CreateFileAsync("WhiteListId.txt", CreationCollisionOption.OpenIfExists);
// Reads whitelist file to get whitelist ID and stores value
string savedWhitelistId = await FileIO.ReadTextAsync(WhiteListIdFile);
// If the ID has not been created, creates a whitelist ID
if (savedWhitelistId == "")
{
string id = Guid.NewGuid().ToString();
await FileIO.WriteTextAsync(WhiteListIdFile, id);
savedWhitelistId = id;
}
// Builds whitelist from exisiting whitelist folder
await sdkController.CreateWhitelistFromFolderAsync(savedWhitelistId, whitelistFolder, null);
// Return true to indicate that Oxford was initialized successfully
return(true);
}
/// <summary>
/// Accepts the name of a visitor. Removes them from whitelist.
/// </summary>
public async static void RemoveUserFromWhitelist(string name)
{
// Acquires instance of Oxford SDK controller
FaceApiRecognizer sdkController = FaceApiRecognizer.Instance;
// Asynchronously remove user from whitelist
await sdkController.RemovePersonFromWhitelistAsync(name);
}
/// <summary>
/// Checks to see if a whitelisted visitor is in passed through image. Returns list of whitelisted visitors. If no authorized users are detected, returns an empty list.
/// </summary>
public async static Task <List <string> > IsFaceInWhitelist(StorageFile image)
{
FaceApiRecognizer sdkController = FaceApiRecognizer.Instance;
List <string> matchedImages = await sdkController.FaceRecognizeAsync(image);
return(matchedImages);
}
/// <summary>
/// Checks to see if a whitelisted visitor is in passed through image. Returns list of whitelisted visitors. If no authorized users are detected, returns an empty list.
/// </summary>
public async static Task <Dictionary <HSFace, HSPerson> > IsFaceInWhitelist(StorageFile image)
{
FaceApiRecognizer sdkController = FaceApiRecognizer.Instance;
return(await sdkController.FaceRecognizeAsync(image));
/* List<string> matchedImages = new List<string>();
* matchedImages = await sdkController.FaceRecognizeAsync(image);
*
* return matchedImages;*/
}
/// <summary>
/// Accepts an image file and the name of a visitor. Associates photo with exisiting visitor.
/// </summary>
public async static void AddImageToWhitelist(StorageFile imageFile, string name)
{
try {
// Acquires instance of Oxford SDK controller
FaceApiRecognizer sdkController = FaceApiRecognizer.Instance;
// Asynchronously adds image to whitelist
await sdkController.AddImageToWhitelistAsync(imageFile, name);
}
catch {
Debug.WriteLine("Failed to add image.");
}
}
/// <summary>
/// Accepts a user name and the folder in which their identifying photos are stored. Adds them to the whitelist.
/// </summary>
public async static void AddUserToWhitelist(string name, StorageFolder photoFolder)
{
try
{
// Acquires instance of Oxford SDK controller
FaceApiRecognizer sdkController = FaceApiRecognizer.Instance;
// Asynchronously adds user to whitelist
await sdkController.AddPersonToWhitelistAsync(photoFolder, name);
}
catch (Exception)
{
Debug.WriteLine("Failed to add user to whitelist.");
}
}
/// <summary>
/// Accepts the name of a visitor. Removes them from whitelist.
/// </summary>
public async static void RemoveUserFromWhitelist(string name)
{
try
{
// Acquires instance of Oxford SDK controller
FaceApiRecognizer sdkController = FaceApiRecognizer.Instance;
// Asynchronously remove user from whitelist
await sdkController.RemovePersonFromWhitelistAsync(name);
}
catch (Exception)
{
Debug.WriteLine("Fail to deleted user");
}
}
