2

I typed the code

pi@raspberrypi:~ $ pip3 install opencv-contrib-python

it responded with

"Collecting opencv-contrib-python"
Could not find a version that satisfies the requirement opencv-contrib-python(from version: )
No matching distribution found for opencv-contrib-python

I'm using Raspbian Stretch on the raspberry pi 3.

1

There's no source distribution available on PyPI, only wheels (for non-Pi platforms) are provided, hence no matching distribution.

You can get v3.4.4.19 from piwheels.org. We are currently building the latest version (v4.x) but it's not available yet.

If you specify the version you should be able to get it:

sudo pip3 install opencv-contrib-python==3.4.4.19

Note you'll also need various dependencies documented here: https://blog.piwheels.org/new-opencv-builds/

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