home-assistant.io/source/_components/image_processing.openalpr_local.markdown

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layout	title	description	date	sidebar	comments	sharing	footer	logo	ha_category	featured	ha_release
page	OpenALPR Local	Instructions how to integrate licences plates with OpenALPR local into Home Assistant.	2017-01-09 00:00	true	false	true	true	openalpr.png	Image Processing	false	0.36

OpenALPR integration for Home Assistant allows you to process licences plates from a camera. You can use them to open a garage door or trigger any other automation.

For using inside automation look on component page.

{% linkable_title Local installation %}

If you want process all data locally, you need version 2.3.1 or higher of the alpr commandline tool.

If you don't find binaries for your distribution you can compile from source. Documention of how to build openalpr is found here.

On a Debian system you can use this cmake command to build only the command line tool:

$ cmake -DWITH_TEST=FALSE -DWITH_BINDING_JAVA=FALSE --DWITH_BINDING_PYTHON=FALSE --DWITH_BINDING_GO=FALSE -DWITH_DAEMON=FALSE -DCMAKE_INSTALL_PREFIX:PATH=/usr ..

Verify your alpr installation with:

$ wget -O- -q http://plates.openalpr.com/h786poj.jpg | alpr -

{% linkable_title Configuration Home Assistant %}

# Example configuration.yaml entry
image_processing:
 - platform: openalpr_local
   region: eu
   source:
    - entity_id: camera.garage

Configuration variables:

• region (Required): Country or region. List of supported values.
• alpr_bin (Optional): The command line tool alpr from OpenALPR software for local processing. Defaults to alpr.
• confidence (Optional): The minimum of confidence in percent to process with Home Assistant. Defaults to 80.
• source array (Required): List of image sources.
  • entities (Required): A list of devices to add in Home Assistant.
  • name (Optional): This parameter allows you to override the name of your OpenALPR entity.