Making Dots on the surface of the gel

[DavidYaonanZhu]

How to make dots on the top of the gel?
The dots can be used for pose tracking and many other algorithms.

Is it print, paint, or laser cut?

[vocdex]

#16
Seems like it has been answered before.

[foxsiin1998]

@DavidYaonanZhu Hi, I wonder if you had solve this issue about making the markers on the gel by following the comment in #16 which mentioned about "print them on with a UV printer (or any other suitable method) and then cover with the white image transfer layer"?
I am confused about the questions below:

1. Is white image transfer layer the same as white paint mixture?
2. The part of print them on (what??) with a UV printer..... Does it mean printing the dots onto the gel before adding the white paint mixture? How to print dots onto a gel using UV printer
3. What are the dimension and spacing of the dots?