A nifty bit of automation, added to the latest Clip Studio Pro (aka Manga Studio), 1.8.6 which was released 28th February 2019. Feed the “Pose Scanner” a picture of a pose, and it will attempt to automatically pose the 3D dummy that resides inside Manga Studio and which is meant as a drawing-guide.
Note how, in the example given, it’s only getting a rather approximate fit. You’d probably do better, in terms of getting pose both believable and lively, by just inking over the photo itself. Still, if you wanted to save a repeatable preset and were willing to further tweak the auto-pose, then it could provide a starting point for crafting the preset. You might also get better results from photos made in your own green-screen setup in your home-studio.
This feature is only a beta “technology preview” at present, but I’d assume it’s based on public research and thus may be coming to other software in time. I assume that the approximate pose extraction is automatic, and doesn’t require the user to draw lines on the photo.
Possibly this sort of thing is already common as a visual toy in smartphone apps. But, not being a connoisseur of such things, I don’t know about them.