thanks so much 
, but found some bugs maybe with gmic… notice how some artifacts appear on the top of the produced image. Also notice the result is different when converted to png or jpg.
original image:
saved as jpg:
saved as png:
Also the increase in size is drammatic. A 6MB image produced a 200MB one and a 600KB produced a 13MB. Is there a way to control this in your command?
PS
Forgive the image I used it was the smallest I could find on my PC. 