Based on model by @ES, ​​​​​​​here is a basic tutorial on how to use some functions for image processing.

the tutorial is rough. on the other hand, you can see all my clicks and all the little details that makes the search and access to functions easier for modelers.

3dxml is in the zip, and the picture I used at the bottom of the post. 

do not hesitate to ask question and any comment for improvement is welcome!