Commit b9a272d1 authored by Sushil BHATTACHARJEE's avatar Sushil BHATTACHARJEE

added user-guide

parent 2373c1db
#!/usr/bin/env python
# vim: set fileencoding=utf-8 :
import os
import sys
import glob
import pkg_resources
# -- General configuration -----------------------------------------------------
# If your documentation needs a minimal Sphinx version, state it here.
needs_sphinx = '1.3'
# Add any Sphinx extension module names here, as strings. They can be extensions
# coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
extensions = [
import sphinx
if sphinx.__version__ >= "1.4.1":
imgmath_image_format = 'svg'
# Be picky about warnings
nitpicky = True
# Ignores stuff we can't easily resolve on other project's sphinx manuals
nitpick_ignore = []
# Allows the user to override warnings from a separate file
if os.path.exists('nitpick-exceptions.txt'):
for line in open('nitpick-exceptions.txt'):
if line.strip() == "" or line.startswith("#"):
dtype, target = line.split(None, 1)
target = target.strip()
try: # python 2.x
target = unicode(target)
except NameError:
nitpick_ignore.append((dtype, target))
# Always includes todos
todo_include_todos = True
# Generates auto-summary automatically
autosummary_generate = True
# Create numbers on figures with captions
numfig = True
# If we are on OSX, the 'dvipng' path maybe different
dvipng_osx = '/opt/local/libexec/texlive/binaries/dvipng'
if os.path.exists(dvipng_osx): pngmath_dvipng = dvipng_osx
# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']
# The suffix of source filenames.
source_suffix = '.rst'
# The encoding of source files.
#source_encoding = 'utf-8-sig'
# The master toctree document.
master_doc = 'index'
# General information about the project.
project = u'bob.ip.qualitymeasure'
import time
copyright = u'%s, Idiap Research Institute' % time.strftime('%Y')
# Grab the setup entry
distribution = pkg_resources.require(project)[0]
# The version info for the project you're documenting, acts as replacement for
# |version| and |release|, also used in various other places throughout the
# built documents.
# The short X.Y version.
version = distribution.version
# The full version, including alpha/beta/rc tags.
release = distribution.version
# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#language = None
# There are two options for replacing |today|: either, you set today to some
# non-false value, then it is used:
#today = ''
# Else, today_fmt is used as the format for a strftime call.
#today_fmt = '%B %d, %Y'
# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
exclude_patterns = ['links.rst']
# The reST default role (used for this markup: `text`) to use for all documents.
#default_role = None
# If true, '()' will be appended to :func: etc. cross-reference text.
#add_function_parentheses = True
# If true, the current module name will be prepended to all description
# unit titles (such as .. function::).
#add_module_names = True
# If true, sectionauthor and moduleauthor directives will be shown in the
# output. They are ignored by default.
#show_authors = False
# The name of the Pygments (syntax highlighting) style to use.
pygments_style = 'sphinx'
# A list of ignored prefixes for module index sorting.
#modindex_common_prefix = []
# Some variables which are useful for generated material
project_variable = project.replace('.', '_')
short_description = u'Extraction of image quality measures for face-PAD experiments.'
owner = [u'Idiap Research Institute']
# -- Options for HTML output ---------------------------------------------------
# The theme to use for HTML and HTML Help pages. See the documentation for
# a list of builtin themes.
import sphinx_rtd_theme
html_theme = 'sphinx_rtd_theme'
# Theme options are theme-specific and customize the look and feel of a theme
# further. For a list of options available for each theme, see the
# documentation.
#html_theme_options = {}
# Add any paths that contain custom themes here, relative to this directory.
html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
# The name for this set of Sphinx documents. If None, it defaults to
# "<project> v<release> documentation".
#html_title = None
# A shorter title for the navigation bar. Default is the same as html_title.
#html_short_title = project_variable
# The name of an image file (relative to this directory) to place at the top
# of the sidebar.
html_logo = 'img/logo.png'
# The name of an image file (within the static path) to use as favicon of the
# docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32
# pixels large.
html_favicon = 'img/favicon.ico'
# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
#html_static_path = ['_static']
# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
# using the given strftime format.
#html_last_updated_fmt = '%b %d, %Y'
# If true, SmartyPants will be used to convert quotes and dashes to
# typographically correct entities.
#html_use_smartypants = True
# Custom sidebar templates, maps document names to template names.
#html_sidebars = {}
# Additional templates that should be rendered to pages, maps page names to
# template names.
#html_additional_pages = {}
# If false, no module index is generated.
#html_domain_indices = True
# If false, no index is generated.
#html_use_index = True
# If true, the index is split into individual pages for each letter.
#html_split_index = False
# If true, links to the reST sources are added to the pages.
#html_show_sourcelink = True
# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
#html_show_sphinx = True
# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
#html_show_copyright = True
# If true, an OpenSearch description file will be output, and all pages will
# contain a <link> tag referring to it. The value of this option must be the
# base URL from which the finished HTML is served.
#html_use_opensearch = ''
# This is the file name suffix for HTML files (e.g. ".xhtml").
#html_file_suffix = None
# Output file base name for HTML help builder.
htmlhelp_basename = project_variable + u'_doc'
# -- Post configuration --------------------------------------------------------
# Included after all input documents
rst_epilog = """
.. |project| replace:: Bob
.. |version| replace:: %s
.. |current-year| date:: %%Y
""" % (version,)
# Default processing flags for sphinx
autoclass_content = 'class'
autodoc_member_order = 'bysource'
autodoc_default_flags = [
# For inter-documentation mapping:
from bob.extension.utils import link_documentation, load_requirements
sphinx_requirements = "extra-intersphinx.txt"
if os.path.exists(sphinx_requirements):
intersphinx_mapping = link_documentation(additional_packages=['python', 'numpy']+load_requirements(sphinx_requirements))
intersphinx_mapping = link_documentation()
# We want to remove all private (i.e. _. or __.__) members
# that are not in the list of accepted functions
accepted_private_functions = ['__array__']
def member_function_test(app, what, name, obj, skip, options):
# test if we have a private function
if len(name) > 1 and name[0] == '_':
# test if this private function should be allowed
if name not in accepted_private_functions:
# omit privat functions that are not in the list of accepted private functions
return skip
# test if the method is documented
if not hasattr(obj, '__doc__') or not obj.__doc__:
return skip
return False
def setup(app):
app.connect('autodoc-skip-member', member_function_test)
.. py:currentmodule:: bob.ip.qualitymeasure
.. testsetup:: *
from __future__ import print_function
import math
import os, sys
import argparse
import #remove this if possible
import bob.ip.color
import numpy as np
from bob.ip.qualitymeasure import galbally_iqm_features as iqm
from bob.ip.qualitymeasure import msu_iqa_features as iqa
import #remove this if possible
import pkg_resources
video_file ='real_client001_android_SD_scene01.mp4', 'bob.ip.qualitymeasure', 'data')
video4d =
User Guide
You can used this Bob package to extract image-quality features for face-PAD applications.
Two sets of quality-features are implemented in this package:
1. The image-quality measures proposed by Galbally et al. (TIFS 2014), and
2. The image-quality features proposed by Wen et al. (TIFS 2015).
The package includes separate modules for implementing the two feature-sets.
The module ``galbally_iqm_features`` implements the features proposed by Gabally et al., and the module ``msu_iqa_features`` implements the features proposed by Wen et al.
In each module, a single function needs to be called, to retrieve all the features implemented in the module.
The examples below show how to use the functions in the two modules.
Note that both feature-sets are extracted from still-images. However, in face-PAD experiments, we typically process videos.
Therefore, the examples below use a video as input, but show how to extract image-quality features for a single frame.
Computing Galbally's image-quality measures
The function ``compute_quality_features()`` (in the module galbally_iqm_features) can be used to compute 18 image-quality measures
proposed by Galbally et al. Note that Galbally et al. proposed 25 features in their paper. This package implements the following
18 features from their paper, namely:
[mse, psnr, ad, sc, nk, md, lmse, nae, snrv, ramdv, mas, mams, sme, gme, gpe, ssim, vif, hlfi].
Therefore, the function ``galbally_iqm_features::compute_quality_features()`` returns a tuple of 18 scalars, in the order listed above.
.. doctest::
>>> from bob.ip.qualitymeasure import galbally_iqm_features as iqm
>>> video4d = # doctest: +SKIP
>>> rgb_frame = video4d[0]
>>> print(len(rgb_frame))
[3, 480, 720]
>>> gf_set = iqm.compute_quality_features(rgb_frame)
>>> print(len(gf_set))
In the example-code above, we have used a color (RGB) image as input to the function ``compute_quality_features()``.
In fact, the features proposed by Galbally et al. are computed over gray-level images.
Therefore, the function ``galbally_iqm_features::compute_quality_features()`` takes as input either a RGB color-image,
or a gray-level image.
(The input image should be a numpy-array. RGB color-images should be in the format expected by Bob_.)
When the input image is 3-dimensional, the first dimension being '3' (as is the case in the example above), the input
is considered to represent a color RGB image, and is first converted to a gray-level image.
If the input is 2-dimensional (say, a numpy array of shape [480, 720]), then it is considered to represent a gray-level
image, and the RGB-to-gray conversion step is skipped.
Computing Wen's image-quality measures
The code below shows how to compute the image-quality features proposed by Wen et al. (Here, we refer to these features as
'MSU features'.)
These features are computed from a RGB color-image. The 2 feature-types (image-blur, color-diversity) all together form
a 118-D feature-vector.
The function ``compute_msu_iqa_features()`` (from the module ``msu_iqa_features``) returns a 1D numpy array of length 118.
.. doctest::
>>> from bob.ip.qualitymeasure import msu_iqa_features as iqa
>>> video4d = # doctest: +SKIP
>>> rgb_frame = video4d[0]
>>> msuf_set = iqa.compute_msu_iqa_features(rgb_frame)
>>> print(len(msuf_set))
.. _Bob:
.. _documentation:
.. vim: set fileencoding=utf-8 :
.. Sushil Bhattacharjee <>
.. Tue 08 Mar 2017 15:42:29 CET
Bob's Routines for Image-Quality Measures for PAD Applications
.. todolist::
This package provides functions for extracting image-quality features for still, color images.
Two sets of features are computed: the set of features proposed by Galbally et al.(TIFS2014),
and the set of features proposed by Wen et al. (TIFS2015).
Note that not all features proposed by the authors of the papers are available in this package.
.. toctree::
:maxdepth: 2
Indices and tables
* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`
.. include:: links.rst
.. vim: set fileencoding=utf-8 :
.. Andre Anjos <>
.. Tue 20 Mar 2012 08:57:32 CET
.. Place here references to all citations in lower case
.. _bob:
.. vim: set fileencoding=utf-8 :
Python API
Detailed Information
.. automodule:: bob.ip.qualitymeasure
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