Polarimetric Thermal Database

bob.db.pola_thermal.get_config()

Returns a string containing the configuration information.

class bob.db.pola_thermal.Annotation(file_id, le_x, le_y, re_x, re_y)

Bases: sqlalchemy.ext.declarative.api.Base

• Annotation.id
• x
• y

file_id

le_x

le_y

metadata = MetaData(bind=None)

re_x

re_y

class bob.db.pola_thermal.Client(id)

Bases: sqlalchemy.ext.declarative.api.Base

Information about the clients (identities) of the LDHF.

id

metadata = MetaData(bind=None)

class bob.db.pola_thermal.Database(original_directory=None, original_extension=None)

Bases: bob.db.base.SQLiteDatabase

Wrapper class for the Near-Infrared and Visible-Light (NIVL) Dataset

all_files(**kwargs)

Returns the list of all File objects that satisfy your query.

For possible keyword arguments, please check the implemention’s objects() method.

annotations(file, annotation_type='eyes_center')

This function returns the annotations for the given file id as a dictionary.

Parameters

file: bob.db.base.File

The File object you want to retrieve the annotations for,

Return

A dictionary of annotations, for face images usually something like {‘leye’:(le_y,le_x), ‘reye’:(re_y,re_x), …}, or None if there are no annotations for the given file ID (which is the case in this base class implementation).

assert_validity()

Raise a RuntimeError if the database back-end is not available.

check_parameter_for_validity(parameter, parameter_description, valid_parameters, default_parameter=None)

check_parameters_for_validity(parameters, parameter_description, valid_parameters, default_parameters=None)

clients(protocol=None, groups=None)

convert_names_to_highlevel(names, low_level_names, high_level_names)

convert_names_to_lowlevel(names, low_level_names, high_level_names)

file_names(files, directory, extension)

files(ids, preserve_order=True)

Returns a list of File objects with the given file ids

Parameters:

• ids (list or tuple) – The ids of the object in the database table “file”. This object should be a python iterable (such as a tuple or list).
• preserve_order (bool) – If True (the default) the order of elements is preserved, but the execution time increases.

Returns:

a list (that may be empty) of File objects.

Return type:

list

get_client_by_id(client_id)

Get the client object from its ID

groups(protocol=None, **kwargs)

This function returns the list of groups for this database.

is_valid()

Returns if a valid session has been opened for reading the database.

modalities

modality_separator

model_ids(protocol=None, groups=None)

objects(groups=None, protocol=None, purposes=None, model_ids=None, modality=None, **kwargs)

This function returns lists of File objects, which fulfill the given restrictions.

original_file_name(file)

This function returns the original file name for the given File object.

Parameters:file – bob.db.base.File or a derivative The File objects for which the file name should be retrieved Returns:The original file name for the given bob.db.base.File object. Return type:str Raises:ValueError – if the file is not found.

original_file_names(files)

Returns the full path of the original data of the given File objects.

Parameters:files (list of bob.db.base.File) – The list of file object to retrieve the original data file names for. Returns:The paths extracted for the files, in the same order. Return type:list of str

paths(ids, prefix=None, suffix=None, preserve_order=True)

Returns a full file paths considering particular file ids

Parameters:

• ids (list or :obj`tuple`) – The ids of the object in the database table “file”. This object should be a python iterable (such as a tuple or list).
• prefix (str, optional) – The bit of path to be prepended to the filename stem
• suffix (str, optional) – The extension determines the suffix that will be appended to the filename stem.
• preserve_order (bool) – If True (the default) the order of elements is preserved, but the execution time increases.

Returns:

A list (that may be empty) of the fully constructed paths given the file ids.

Return type:

list

protocols()

purposes()

query(*args)

Creates a query to the database using the given arguments.

reverse(paths, preserve_order=True)

Reverses the lookup from certain paths, returns a list of bob.db.base.File’s

Parameters:

• paths (list) – The filename stems (list of str) to query for. This object should be a python iterable (such as a tuple or list)
• preserve_order (bool, optional) – If True (the default) the order of elements is preserved, but the execution time increases.

Returns:

A list (that may be empty).

Return type:

list

sort(files)

uniquify(file_list)

Sorts the given list of File objects and removes duplicates from it.

Parameters:file_list ([bob.db.base.File]) – A list of File objects to be handled. Also other objects can be handled, as long as they are sortable. Returns:A sorted copy of the given file_list with the duplicates removed. Return type:list

class bob.db.pola_thermal.File(file_id, image_name, client_id, modality, polarization, shot)

Bases: sqlalchemy.ext.declarative.api.Base, bob.db.base.File

Information about the files of the LDHF database.

Each file includes * the client id

all_annotations

annotations(annotation_type='eyes_center')

client

client_id

id

load(directory=None, extension='.hdf5')

Loads the data at the specified location and using the given extension. Override it if you need to load differently.

Parameters:

• directory (str, optional) – If not empty or None, this directory is prefixed to the final file destination
• extension (str, optional) – If not empty or None, this extension is suffixed to the final file destination

Returns:

The loaded data (normally numpy.ndarray).

Return type:

object

make_path(directory=None, extension=None)

Wraps the current path so that a complete path is formed

Parameters:

• directory (str, optional) – An optional directory name that will be prefixed to the returned result.
• extension (str, optional) – An optional extension that will be suffixed to the returned filename. The extension normally includes the leading . character as in .jpg or .hdf5.

Returns:

Returns a string containing the newly generated file path.

Return type:

str

metadata = MetaData(bind=None)

modality

modality_choices = ('VIS', 'THERMAL')

path

polarization

polarization_choices = ('VIS', 'S0', 'S1', 'S2', 'DP')

save(data, directory=None, extension='.hdf5', create_directories=True)

Saves the input data at the specified location and using the given extension. Override it if you need to save differently.

Parameters:

• data (object) – The data blob to be saved (normally a numpy.ndarray).
• directory (str, optional) – If not empty or None, this directory is prefixed to the final file destination
• extension (str, optional) – The extension of the filename - this will control the type of output and the codec for saving the input blob.
• create_directories (bool, optional) – Whether to create the required directories to save the data.

shot

class bob.db.pola_thermal.Protocol_File_Association(protocol, group, purpose, file_id)

Bases: sqlalchemy.ext.declarative.api.Base

Describe the protocols

file_id

group

metadata = MetaData(bind=None)

protocol

purpose