A tutorial created by Jessica Eichberg on how to use vision recognition with NAO robot. The .crg file to use with Choregraphe and this demo can be download here: http://goo.gl/sM7Dtb

1. How to use vision recognition
Jessica Eichberg
Behavior Architect for Special Education

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• This is a tutorial about how to use vision recognition
in naoqi version 1.14
• You will learn:
– How to record images in a database with
Choregraphe
– How to export and unpack the database using
the opensource program TarTool (Windows)
– How to import the database files and to test them
in Choregraphe
What is it about?

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• Why? You need it to unpack your image database
• Where can I download it? Here
• What next? Unzip the TarTool.zip file to a folder of
your choice on your computer
Before we start, please install TarTool on your
computer

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Open Video Monitor in Choregraphe
• View  Video monitor

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• Hold the image around 30 cm in front of NAO
• Click on the “Learn” Button
• Continue holding the image until the countdown is
finished
• Select the part of the displayed image you want to
store in the database (click on the edges of the
image)
• Give your image a name and click on OK
Record a new image

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And here you can watch a video…

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• Click on “Export Vision Recognition Database”, give
your database a name and save it into the TarTool
folder
• Open a command window for your TarTool folder:
– Press and hold the Shift key and right click on
the TarTool folder
– Click on Open Command Window here
Export and unpack your database

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• Then you need to enter the following command
(replace nameofyourdb by the actual name of your
database):
tartool nameofyourdb.vrd
• Afterwards you will find the following files in your
TarTool folder:
database.ar1, database.ar2, database.ar3,
database.ar4, database.ar5
Export and unpack your database

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To sum it up here is another video…

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• Open vision_demo.crg in Choregraphe
• Open the Project content (View  Project content)
• Click on Create directory, enter the name vision
and click on OK
• Click on Import file, select the 5 database.ar1..5
files and click on Open
 Now the vision database containing your recorded
images is imported in your application
Import the database in your application

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vision_demo.crg

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Last but not least…

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Have fun!