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docs - revise heading levels for feature detection (images) #6029

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merged 1 commit into from May 15, 2020
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docs - revise heading levels for feature detection (images) #6029

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11 changes: 4 additions & 7 deletions docs/advanced_topics/images/feature_detection.rst
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Expand Up @@ -18,13 +18,10 @@ Two third-party tools are known to work with Wagtail: One based on OpenCV_ for g
.. _Rustface: https://github.com/torchbox/rustface-py/

OpenCV on Debian/Ubuntu
~~~~~~~~~~~~~~~~~~~~~~~
^^^^^^^^^^^^^^^^^^^^^^^

Feature detection requires OpenCV_ which can be a bit tricky to install as it's not currently pip-installable.

Installation options
~~~~~~~~~~~~~~~~~~~~

There is more than one way to install these components, but in each case you will need to test that both OpenCV itself *and* the Python interface have been correctly installed.


Expand Down Expand Up @@ -77,7 +74,7 @@ If you don't get an import error, installation has probably been successful.


Rustface
~~~~~~~~
^^^^^^^^

Rustface_ is Python library with prebuilt wheel files provided for Linux and macOS. Although implemented in Rust it is pip-installable:

Expand All @@ -88,7 +85,7 @@ Rustface_ is Python library with prebuilt wheel files provided for Linux and mac


Registering with Willow
^^^^^^^^^^^^^^^^^^^^^^^
```````````````````````

Rustface provides a plug-in that needs to be registered with Willow_.

Expand All @@ -109,7 +106,7 @@ For example, in an app's AppConfig.ready_.


Cropping
^^^^^^^^
--------

The face detection algorithm produces a focal area that is tightly cropped to the face rather than the whole head.

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