.. _face-features:

Enable Face Attribute Recognition
======================================

Subject to your needs, you can enable automatic recognition of such face attributes as gender, age, emotions, glasses, beard, and face mask. This functionality can be activated on both GPU- and CPU-accelerated video object detectors.

To enable automatic recognition of face attributes, do the following:

#. Open the ``/etc/findface-extraction-api.ini`` configuration file.

   .. code::
   
      sudo vi /etc/findface-extraction-api.ini

#. Specify the relevant recognition models in the ``extractors`` section, as shown in the example below. Be sure to indicate the right acceleration type for each model, matching the acceleration type of ``findface-extraction-api``: CPU or GPU. Be aware that ``findface-extraction-api`` on CPU can work only with CPU-models, while ``findface-extraction-api`` on GPU supports both CPU- and GPU-models.   

   .. code::
  
      extractors:
        face_age: faceattr/age.v1.gpu.fnk
        face_beard: faceattr/beard.v0.gpu.fnk
        face_emotions: faceattr/emotions.v1.gpu.fnk
        face_gender: faceattr/gender.v2.gpu.fnk
        face_glasses3: faceattr/glasses3.v0.gpu.fnk
        face_medmask3: faceattr/medmask3.v2.gpu.fnk

   The following models are available:

   +------------------+--------------+--------------------------------------------------------------------------------+
   | Face attribute   | Acceleration | Configure as follows                                                           |
   +==================+==============+================================================================================+
   | age              | CPU          | ``face_age: faceattr/age.v1.cpu.fnk``                                          |
   |                  +--------------+--------------------------------------------------------------------------------+
   |                  | GPU          | ``face_age: faceattr/age.v1.gpu.fnk``                                          |
   +------------------+--------------+--------------------------------------------------------------------------------+
   | gender           | CPU          | ``face_gender: faceattr/gender.v2.cpu.fnk``                                    |
   |                  +--------------+--------------------------------------------------------------------------------+
   |                  | GPU          | ``face_gender: faceattr/gender.v2.gpu.fnk``                                    |
   +------------------+--------------+--------------------------------------------------------------------------------+
   | emotions         | CPU          | ``face_emotions: faceattr/emotions.v1.cpu.fnk``                                |
   |                  +--------------+--------------------------------------------------------------------------------+
   |                  | GPU          | ``face_emotions: faceattr/emotions.v1.gpu.fnk``                                |
   +------------------+--------------+--------------------------------------------------------------------------------+
   | glasses          | CPU          | ``face_glasses3: faceattr/glasses3.v0.cpu.fnk``                                |
   |                  +--------------+--------------------------------------------------------------------------------+
   |                  | GPU          | ``face_glasses3: faceattr/glasses3.v0.gpu.fnk``                                |
   +------------------+--------------+--------------------------------------------------------------------------------+
   | beard            | CPU          | ``face_beard: faceattr/beard.v0.cpu.fnk``                                      |
   |                  +--------------+--------------------------------------------------------------------------------+
   |                  | GPU          | ``face_beard: faceattr/beard.v0.gpu.fnk``                                      |
   +------------------+--------------+--------------------------------------------------------------------------------+
   | face mask        | CPU          | ``face_medmask3: faceattr/medmask3.v2.cpu.fnk``                                |
   |                  +--------------+--------------------------------------------------------------------------------+
   |                  | GPU          | ``face_medmask3: faceattr/medmask3.v2.gpu.fnk``                                |
   +------------------+--------------+--------------------------------------------------------------------------------+


   .. tip::
      To leave a recognition model disabled, pass the empty value ``""`` to the relevant parameter. Do not remove the parameter itself. Otherwise, the system will be searching for the default model. 

      .. code::

         extractors:
           face_age: ""
           face_beard: ""
           face_emotions: ""
           face_gender: ""
           face_glasses3: ""
           face_medmask3: ""


   .. note::
      You can find face attribute recognition models at ``/usr/share/findface-data/models/faceattr/``.

      .. code::

         ls /usr/share/findface-data/models/faceattr/
         age.v1.cpu.fnk  age.v1.gpu.fnk  beard.v0.cpu.fnk  beard.v0.gpu.fnk  emotions.v1.cpu.fnk  emotions.v1.gpu.fnk  gender.v2.cpu.fnk  gender.v2.gpu.fnk  glasses3.v0.cpu.fnk  glasses3.v0.gpu.fnk medmask3.v2.cpu.fnk medmask3.v2.gpu.fnk liveness.alleyn.v2.gpu.fnk quality.v1.cpu.fnk quality.v1.gpu.fnk


#. Restart ``findface-extraction-api``.

   .. code::

      sudo systemctl restart findface-extraction-api

#. To display the face attribute recognition results in the event list, open the ``/etc/findface-security/config.py`` configuration file. 

   .. code::

      sudo vi /etc/findface-security/config.py

#. Specify the required models in the following line of the ``FFSECURITY`` section, subject to the list of enabled models:

   .. code::

      FFSECURITY = {
          ...
          'EVENTS_FEATURES': ['gender', 'age', 'emotions', 'beard', 'glasses', 'medmask'] 
          ...
      }


#. Restart ``findface-security``.

   .. code::

      sudo systemctl restart findface-security