Hello ?
I was searching the better way to draw this kind of pattern on a cylinder.
I tried but it’s not perfect. If you’ve got some ideas… 
Thank you for your help.
You would have to edit the picture to black and white. Then you can try to vectorize the image, i.e. convert it from an image to DXF. Then import it into Shapr3D and project onto your cylinder.
Here is an online tool to convert Jpeg to DXF:
https://convertio.co/de/jpg-dxf/
Greetings Pascal