diff --git a/bob/bio/base/test/dummy/algorithm.py b/bob/bio/base/test/dummy/algorithm.py
index d1d25d487ea756a2ead758fabd266cb64853cd0a..ab427baeaa2292b6ec43a9fb52103d142866f286 100644
--- a/bob/bio/base/test/dummy/algorithm.py
+++ b/bob/bio/base/test/dummy/algorithm.py
@@ -1,6 +1,6 @@
import scipy.spatial
import bob.io.base
-
+import numpy
from bob.bio.base.algorithm import Algorithm
_data = [5., 6., 7., 8., 9.]
@@ -57,3 +57,28 @@ class DummyAlgorithm (Algorithm):
return scipy.spatial.distance.euclidean(model, probe)
algorithm = DummyAlgorithm()
+
+
+class DummyAlgorithmMetadata (DummyAlgorithm):
+
+ def train_projector(self, train_files, projector_file, metadata=None):
+ """Does nothing, simply converts the data type of the data, ignoring any annotation."""
+ assert metadata is not None
+ return super(DummyAlgorithmMetadata, self).train_projector(train_files, projector_file)
+
+ def enroll(self, enroll_features, metadata=None):
+ # Cheking if the all the metadata are from the same client_id
+ assert numpy.alltrue([metadata[0].client_id == m.client_id for m in metadata])
+ #assert metadata is not None
+ return super(DummyAlgorithmMetadata, self).enroll(enroll_features)
+
+ def score(self, model, probe, metadata=None):
+ """Returns the Euclidean distance between model and probe"""
+ assert metadata is not None
+ return super(DummyAlgorithmMetadata, self).score(model, probe)
+
+ def project(self, feature, metadata=None):
+ assert metadata is not None
+ return super(DummyAlgorithmMetadata, self).project(feature)
+
+algorithm_metadata = DummyAlgorithmMetadata()
diff --git a/bob/bio/base/test/test_scripts.py b/bob/bio/base/test/test_scripts.py
index 609487982bc24ada63ad7fe37a425f75f2965496..072a431b03af1eea9afa23d96ddb211a1ec9e183 100644
--- a/bob/bio/base/test/test_scripts.py
+++ b/bob/bio/base/test/test_scripts.py
@@ -150,7 +150,7 @@ def test_verify_resources_metadata():
'-d', 'dummy',
'-p', 'dummy_metadata',
'-e', 'dummy_metadata',
- '-a', 'dummy',
+ '-a', 'dummy_metadata',
'--zt-norm',
'--allow-missing-files',
'-vs', 'test_resource',
diff --git a/bob/bio/base/tools/algorithm.py b/bob/bio/base/tools/algorithm.py
index 06a5a1be5b5e0f4f3ce7dc823838cdac1ee8f726..ff2d69ff3d8553751b9d3bc9b169fc093f3e9c51 100644
--- a/bob/bio/base/tools/algorithm.py
+++ b/bob/bio/base/tools/algorithm.py
@@ -2,6 +2,7 @@ import bob.io.base
import os
import logging
+import inspect
logger = logging.getLogger("bob.bio.base")
from .FileSelector import FileSelector
@@ -45,6 +46,7 @@ def train_projector(algorithm, extractor, allow_missing_files = False, force = F
bob.io.base.create_directories_safe(os.path.dirname(fs.projector_file))
# train projector
logger.info("- Projection: loading training data")
+
train_files = fs.training_list('extracted', 'train_projector', arrange_by_client = algorithm.split_training_features_by_client)
train_features = read_features(train_files, extractor, algorithm.split_training_features_by_client, allow_missing_files)
if algorithm.split_training_features_by_client:
@@ -53,8 +55,11 @@ def train_projector(algorithm, extractor, allow_missing_files = False, force = F
logger.info("- Projection: training projector '%s' using %d training files: ", fs.projector_file, len(train_files))
# perform training
- algorithm.train_projector(train_features, fs.projector_file)
-
+ if "metadata" in inspect.getargspec(algorithm.train_projector).args:
+ metadata = fs.database.training_files('train_projector', algorithm.split_training_features_by_client)
+ algorithm.train_projector(train_features, fs.projector_file, metadata=metadata)
+ else:
+ algorithm.train_projector(train_features, fs.projector_file)
def project(algorithm, extractor, groups = None, indices = None, allow_missing_files = False, force = False):
@@ -99,6 +104,7 @@ def project(algorithm, extractor, groups = None, indices = None, allow_missing_f
feature_files = fs.feature_list(groups=groups)
projected_files = fs.projected_list(groups=groups)
+ metadata = fs.original_data_list(groups=groups)
# select a subset of indices to iterate
if indices is not None:
@@ -129,8 +135,12 @@ def project(algorithm, extractor, groups = None, indices = None, allow_missing_f
bob.io.base.create_directories_safe(os.path.dirname(projected_file))
# load feature
feature = extractor.read_feature(feature_file)
+
# project feature
- projected = algorithm.project(feature)
+ if "metadata" in inspect.getargspec(algorithm.project).args:
+ projected = algorithm.project(feature, metadata=metadata)
+ else:
+ projected = algorithm.project(feature)
if projected is None:
if allow_missing_files:
@@ -264,8 +274,8 @@ def enroll(algorithm, extractor, compute_zt_norm, indices = None, groups = ['dev
# Removes old file if required
if not utils.check_file(model_file, force,
algorithm.min_model_file_size):
- enroll_files = fs.enroll_files(model_id, group, 'projected' if algorithm.use_projected_features_for_enrollment else 'extracted')
+ enroll_files = fs.enroll_files(model_id, group, 'projected' if algorithm.use_projected_features_for_enrollment else 'extracted')
if allow_missing_files:
enroll_files = utils.filter_missing_files(enroll_files)
if not enroll_files:
@@ -280,7 +290,11 @@ def enroll(algorithm, extractor, compute_zt_norm, indices = None, groups = ['dev
# load all files into memory
enroll_features = [reader.read_feature(enroll_file) for enroll_file in enroll_files]
- model = algorithm.enroll(enroll_features)
+ if "metadata" in inspect.getargspec(algorithm.enroll).args:
+ metadata = fs.database.enroll_files(group=group, model_id=model_id)
+ model = algorithm.enroll(enroll_features, metadata=metadata)
+ else:
+ model = algorithm.enroll(enroll_features)
if model is None:
if allow_missing_files:
@@ -327,7 +341,11 @@ def enroll(algorithm, extractor, compute_zt_norm, indices = None, groups = ['dev
# load all files into memory
t_enroll_features = [reader.read_feature(t_enroll_file) for t_enroll_file in t_enroll_files]
- t_model = algorithm.enroll(t_enroll_features)
+ if "metadata" in inspect.getargspec(algorithm.enroll).args:
+ metadata = fs.database.enroll_files(group=group, model_id=t_model_id)
+ t_model = algorithm.enroll(t_enroll_features, metadata=metadata)
+ else:
+ t_model = algorithm.enroll(t_enroll_features)
if t_model is None:
if allow_missing_files:
diff --git a/bob/bio/base/tools/scoring.py b/bob/bio/base/tools/scoring.py
index 1649add9826561f8c13a9336c9538154958a6773..58f5d81703498a492ec88e6663a4b0c19f95dce8 100644
--- a/bob/bio/base/tools/scoring.py
+++ b/bob/bio/base/tools/scoring.py
@@ -5,12 +5,12 @@ import bob.measure
import numpy
import os, sys
import tarfile
+import inspect
import logging
logger = logging.getLogger("bob.bio.base")
from .FileSelector import FileSelector
-from .extractor import read_features
from .. import utils
def _scores(algorithm, reader, model, probe_objects, allow_missing_files):
@@ -28,12 +28,12 @@ def _scores(algorithm, reader, model, probe_objects, allow_missing_files):
return scores
# Loops over the probe sets
- for i, probe_element in enumerate(probes):
+ for i, probe_element, probe_metadata in zip(range(len(probes)), probes, probe_objects):
if fs.uses_probe_file_sets():
assert isinstance(probe_element, list)
# filter missing files
if allow_missing_files:
- probe_element = utils.filter_missing_files(probe_element)
+ probe_element = utils.filter_missing_files(probe_element, probe_objects)
if not probe_element:
# we keep the NaN score
continue
@@ -48,7 +48,11 @@ def _scores(algorithm, reader, model, probe_objects, allow_missing_files):
# read probe
probe = reader.read_feature(probe_element)
# compute score
- scores[0,i] = algorithm.score(model, probe)
+ if "metadata" in inspect.getargspec(algorithm.score).args:
+ scores[0, i] = algorithm.score(model, probe, metadata=probe_metadata)
+ else:
+ scores[0, i] = algorithm.score(model, probe)
+
# Returns the scores
return scores
diff --git a/doc/implementation.rst b/doc/implementation.rst
index 55908a9a79f496e94710ea1f63e6ce84a7c843df..cccdb11822467bae66bff758dc41a18a2db25e44 100644
--- a/doc/implementation.rst
+++ b/doc/implementation.rst
@@ -45,6 +45,13 @@ All of them implement the following two functions:
.. note::
When the database does not provide annotations, the ``annotations`` parameter might be ``None``.
+ .. note::
+ If necessary, an instance of :py:class:`bob.bio.base.database.BioFile` can be passed to the preprocessor.
+ For that, the method ``__call__`` has a keyword called **metadata**.
+ If this keyword is set in its header, an instance of :py:class:`bob.bio.base.database.BioFile`
+ is shipped via this keyword argument.
+
+
By default, the data returned by the preprocessor is of type :py:class:`numpy.ndarray`.
In that case, the base class IO functionality can be used.
If a class returns data that is **not** of type :py:class:`numpy.ndarray`, it overwrites further functions from :py:class:`bob.bio.base.preprocessor.Preprocessor` that define the IO of your class:
@@ -72,6 +79,13 @@ All extractor classes provide at least the functions:
* ``__call__(self, data) -> feature``: Extracts the feature from the given preprocessed data.
By default, the returned feature should be a :py:class:`numpy.ndarray`.
+ .. note::
+ If necessary, an instance of :py:class:`bob.bio.base.database.BioFile` can be passed to the extractor.
+ For that, the method ``__call__`` has a keyword called **metadata**.
+ If this keyword is set in its header, an instance of :py:class:`bob.bio.base.database.BioFile`
+ is shipped via this keyword argument.
+
+
If features are not of type :py:class:`numpy.ndarray`, the ``write_feature`` function is overridden.
In this case, also the function to read that kind of features needs to be overridden:
@@ -180,6 +194,13 @@ These two functions are:
* ``score_for_multiple_models(self, models, probe)``: In case your model store several features, **call** this function to compute the average (or min, max, ...) of the scores.
* ``score_for_multiple_probes(self, model, probes)``: By default, the average (or min, max, ...) of the scores for all probes are computed. **Override** this function in case you want different behavior.
+ .. note::
+ If necessary, an instance of :py:class:`bob.bio.base.database.BioFile` can be passed to the algorithm.
+ For that, the methods ``train_projector``, ``project``, ``enroll`` and ``score`` have a keyword called **metadata**.
+ If this keyword is set in its header, an instance of :py:class:`bob.bio.base.database.BioFile`
+ is shipped via this keyword argument.
+
+
Implemented Tools
-----------------
diff --git a/setup.py b/setup.py
index 4ddf3c9394e559ae8d1da7603ce6569a9c0d320a..d33d06d3c71f8cf11d37a92bb4181b464c3adf73 100644
--- a/setup.py
+++ b/setup.py
@@ -106,6 +106,7 @@ setup(
'bob.bio.algorithm': [
'dummy = bob.bio.base.test.dummy.algorithm:algorithm', # for test purposes only
+ 'dummy_metadata = bob.bio.base.test.dummy.algorithm:algorithm_metadata',
'distance-euclidean = bob.bio.base.config.algorithm.distance_euclidean:algorithm',
'distance-cosine = bob.bio.base.config.algorithm.distance_cosine:algorithm',
'distance-hamming = bob.bio.base.config.algorithm.distance_hamming:algorithm',