There are artists who print out digital copies of their work on canvas and then brush clear acrylic medium onto those prints to give the effect of brush stokes. They even charge a premium for this type of print.
***There are artists who print out digital copies of their work on canvas and then brush clear acrylic medium onto those prints to give the effect of brush stokes.****
I saw some of these several years ago. They looked so real they almost fooled me till I got up real close and began to see the dot matrix used in printing the colors.
It's called a giclee and is an affordable way to own a piece of art that would be above your pay grade. If it is added to in the way you explained, by the artist brushing clear medium onto the print, it's called an enhanced giclee and costs more than a regular giclee.
Until you told me, I didn't realize that all the artist did was brush clear medium on the painting to enhance it. I thought they put on some brush strokes here and there with paint. Your description makes perfect sense and would keep the painting from being changed from the original. Thanks for the information!