#!/usr/bin/env python
# vim: set fileencoding=utf-8 :
# Tiago de Freitas Pereira <tiago.pereira@idiap.ch>
# Sat 20 Aug 15:43:10 CEST 2016
"""
YOUTUBE database implementation of bob.bio.base.database.ZTDatabase interface.
It is an extension of an SQL-based database interface, which directly talks to YOUTUBE database, for
verification experiments (good to use in bob.bio.base framework).
"""
from .database import VideoBioFile
from bob.bio.base.database import ZTBioDatabase
from bob.bio.video.utils import FrameContainer, FrameSelector
import os
import bob.io.base
class YoutubeBioFile(VideoBioFile):
def __init__(self, f):
super(YoutubeBioFile, self).__init__(client_id=f.client_id, path=f.path, file_id=f.id)
self._f = f
def files(self, directory=None, extension=".jpg"):
base_dir = self.make_path(directory, '')
# collect all files from the data directory
files = [os.path.join(base_dir, f) for f in sorted(os.listdir(base_dir))]
# filter files with the given extension
if extension is not None:
files = [f for f in files if os.path.splitext(f)[1] == extension]
return files
def load(self, directory=None, extension=None, frame_selector=FrameSelector()):
if extension in (None, '.jpg'):
fc = FrameContainer()
files = self.files(directory, extension)
for f in frame_selector(files):
file_name = os.path.join(self.make_path(directory, ''), f)
fc.add(os.path.basename(file_name), bob.io.base.load(file_name))
return fc
else:
return super(YoutubeBioFile, self).load(directory, extension)
class YoutubeBioDatabase(ZTBioDatabase):
"""
YouTube Faces database implementation of :py:class:`bob.bio.base.database.ZTBioDatabase` interface.
It is an extension of an SQL-based database interface, which directly talks to :py:class:`bob.db.youtube.Database` database, for
verification experiments (good to use in ``bob.bio`` framework).
"""
def __init__(
self,
original_directory=None,
original_extension='.jpg',
annotation_extension='.labeled_faces.txt',
**kwargs
):
# call base class constructors to open a session to the database
super(YoutubeBioDatabase, self).__init__(
name='youtube',
original_directory=original_directory,
original_extension=original_extension,
annotation_extension=annotation_extension,
**kwargs)
from bob.db.youtube.query import Database as LowLevelDatabase
self._db = LowLevelDatabase(original_directory,
original_extension,
annotation_extension)
[docs] def model_ids_with_protocol(self, groups=None, protocol=None, **kwargs):
return self._db.model_ids(groups=groups, protocol=protocol)
[docs] def tmodel_ids_with_protocol(self, protocol=None, groups=None, **kwargs):
return self._db.tmodel_ids(protocol=protocol, groups=groups, **kwargs)
[docs] def objects(self, groups=None, protocol=None, purposes=None, model_ids=None, **kwargs):
retval = self._db.objects(groups=groups, protocol=protocol, purposes=purposes, model_ids=model_ids, **kwargs)
return [YoutubeBioFile(f) for f in retval]
[docs] def tobjects(self, groups=None, protocol=None, model_ids=None, **kwargs):
retval = self._db.tobjects(groups=groups, protocol=protocol, model_ids=model_ids, **kwargs)
return [YoutubeBioFile(f) for f in retval]
[docs] def zobjects(self, groups=None, protocol=None, **kwargs):
retval = self._db.zobjects(groups=groups, protocol=protocol, **kwargs)
return [YoutubeBioFile(f) for f in retval]
[docs] def annotations(self, myfile):
return self._db.annotations(myfile._f)
[docs] def client_id_from_model_id(self, model_id, group='dev'):
return self._db.get_client_id_from_file_id(model_id)