Merge branch 'batl_db_update' into 'master'

Added an option to exclude specific types of attacks from train set in BATL DB

See merge request !66

bob/pad/face/database/batl.py

@@ -150,6 +150,7 @@ class BatlPadDatabase(PadDatabase):
             original_extension='.h5',
             annotations_temp_dir="",
             landmark_detect_method="mtcnn",
+            exlude_attacks_list=None,
             **kwargs):
         """
         **Parameters:**
@@ -186,6 +187,12 @@ class BatlPadDatabase(PadDatabase):
             landmarks. Possible options: "dlib" or "mtcnn".
             Default: ``"mtcnn"``.
 
+        ``exlude_attacks_list`` : [str]
+            A list of strings defining which attacks should be excluded from
+            the training set. This shoould be handled in ``objects()`` method.
+            Currently handled attacks: "makeup".
+            Default: ``None``.
+
         ``kwargs`` : dict
             The arguments of the :py:class:`bob.bio.base.database.BioDatabase`
             base class constructor.
@@ -217,6 +224,7 @@ class BatlPadDatabase(PadDatabase):
         self.original_extension = original_extension
         self.annotations_temp_dir = annotations_temp_dir
         self.landmark_detect_method = landmark_detect_method
+        self.exlude_attacks_list = exlude_attacks_list
 
     @property
     def original_directory(self):
@@ -378,6 +386,11 @@ class BatlPadDatabase(PadDatabase):
             The protocol is dependent on your database.
             If you do not have protocols defined, just ignore this field.
 
+        ``groups`` : :py:class:`str`
+            OR a list of strings.
+            The groups of which the clients should be returned.
+            Usually, groups are one or more elements of ('train', 'dev', 'eval')
+
         ``purposes`` : :obj:`str` or [:obj:`str`]
             The purposes for which File objects should be retrieved.
             Usually it is either 'real' or 'attack'.
@@ -433,7 +446,14 @@ class BatlPadDatabase(PadDatabase):
                                                     groups=groups,
                                                     purposes=purposes, **kwargs)
 
+        if groups == 'train' or 'train' in groups and len(groups) == 1:
+            # exclude "makeup" case
+            if self.exlude_attacks_list is not None and "makeup" in self.exlude_attacks_list:
+
+                files = [f for f in files if os.path.split(f.path)[-1].split("_")[-2:-1][0] != "5"]
+
         files = [BatlPadFile(f, stream_type, max_frames) for f in files]
+
         return files
 
     def annotations(self, f):