Only 4 pieces

[jumpjack]

It finds and locks only 4 pieces, then what? Should I do something else after running first time?

[MaximTerleev]

Dear Jumpjack! Kindly open the notebook via Google Colab link (it is at the top of .py file), upload the picture to Colab and run. This will guarantee the result.

Otherwise your local machine setup may transform the image or Python interpreter may differ from the one in Colab and due to this demonstrate a slightly different behavior.

Generally, this code is a reference code for the TowardsDataScience publication and is designed exclusively to demonstrate the principal algorithm. In this way it has no wrapping to restart after fails, on-the-go reparametrization (parameters are pre-fixed in matchTiles() function) etc, etc... You can take it as a basis and wrap it into your own logic... Try playing with LENGTH, PRECISION, STEP_A, STEP_B parameters...

[jumpjack]

I don't know how to use colab and how to upload images, once I'm here what should I do ?

[jumpjack]

ah ok, it was easier than I thought.
It works with demo image... but with my images it find just 1 piece!

Real puzzle:

Result:

Handmade on PC:

Result:

I'll try tuning some parameters, thanks.