Package pyvision :: Package analysis :: Module bee

Module bee

This module contains functions for reading and writing files for the Biometrics Evaluation Environment (BEE) including distance matricies and sigsets.

Author: David S. Bolme (CSU) and C.J. Carey (NIST)

see: <a href="http://www.bee-biometrics.org">http://www.bee-biometrics.org</a>

Classes

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BEEDistanceMatrix

Functions

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parseSigSet(filename)
the format of a sigset is:

source code

saveSigset(ss, filename)
save a sigset to a file.

source code

sigset2xml(ss)

source code

sigset2array(ss)

source code

formatSigset(ss, n=None)

source code

fastROC(sorted_positives, sorted_negatives)

source code

computeMaskMatrix(target_sigset, query_sigset, target_filename, query_filename, symmetric=True)
Computes a mask matrix from two sigsets.

source code

Variables

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BIOMETRIC_SIGNATURE = '{http://www.bee-biometrics.org/schemas/...

PRESENTATION = '{http://www.bee-biometrics.org/schemas/sigset/...

COMPLEX_BIOMETRIC_SIGNATURE = '{http://www.bee-biometrics.org/...

COMPLEX_PRESENTATION = '{http://www.bee-biometrics.org/schemas...

COMPLEX_COMPONENT = '{http://www.bee-biometrics.org/schemas/si...

COMPLEX_DATA = '{http://www.bee-biometrics.org/schemas/sigset/...

BEE_NONMATCH = 127

BEE_MATCH = -1

BEE_DONTCARE = 0

BEE_CODE_MAP = {-1: 'MATCH', 0: 'DONTCARE', 127: 'NONMATCH', 2...

__package__ = 'pyvision.analysis'

Function Details

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parseSigSet(filename)

source code

the format of a sigset is:

   sigset = [ 
               ("subject_id", #biometric-signature
                   [ # multiple presentations
                       {'name':"recording_id", 'modality':"...", 'file-name':"...", 'file-format':"..."},
                       {'name':"recording_id", 'modality':"...", 'file-name':"...", 'file-format':"..."},
                       {'name':"recording_id", 'modality':"...", 'file-name':"...", 'file-format':"..."}
                   ]
               ),
               ("subject_id",#biometric-signature
                   [ # multiple presentations
                       {'name':"recording_id", 'modality':"...", 'file-name':"...", 'file-format':"..."},
                       {'name':"recording_id", 'modality':"...", 'file-name':"...", 'file-format':"..."},
                       {'name':"recording_id", 'modality':"...", 'file-name':"...", 'file-format':"..."}
                   ]
               )
           ]

saveSigset(ss, filename)

source code

save a sigset to a file.

Parameters:

ss - a sigset structured list
filename - a file object or filename

computeMaskMatrix(target_sigset, query_sigset, target_filename, query_filename, symmetric=True)

source code

Computes a mask matrix from two sigsets.

Parameters:

target_sigset - the target sigset to use.
query_sigset - the query sigset to use.
symmetric - if true and the sigsets are equal it assumes that the matrix is symmetric and will treat the low left triangle as DONT_CARE's.

Returns:

a bee mask matrix.

Variables Details

[hide private]

BIOMETRIC_SIGNATURE

Value:

'{http://www.bee-biometrics.org/schemas/sigset/0.1}biometric-signature
'

PRESENTATION

Value:

'{http://www.bee-biometrics.org/schemas/sigset/0.1}presentation'

COMPLEX_BIOMETRIC_SIGNATURE

Value:

'{http://www.bee-biometrics.org/schemas/sigset/0.1}complex-biometric-s
ignature'

COMPLEX_PRESENTATION

Value:

'{http://www.bee-biometrics.org/schemas/sigset/0.1}complex-presentatio
n'

COMPLEX_COMPONENT

Value:

'{http://www.bee-biometrics.org/schemas/sigset/0.1}presentation-compon
ent'

COMPLEX_DATA

Value:

'{http://www.bee-biometrics.org/schemas/sigset/0.1}data'

BEE_CODE_MAP

Value:

{-1: 'MATCH', 0: 'DONTCARE', 127: 'NONMATCH', 255: 'MATCH'}