I set this as a challenge several years ago to see if we could do something similar to Paperman while mixing it with a traditional 2D background NPR rendering but still get that 2D feeling of the hand-drawn variation in lines and volume preservation without going too crazy with the 1's, 2's and digital computer inbetweening.
We developed several tools for integration of the 3D renderings into TVpaint for things like reworking animation, silhouettes, most of the clothes are hand animated while the bodies are full CG.
A retiming tool for xsheet importing from Maya to TVPaint along with renderpasses from 3dsmax to TVPaint.
Also a tool for importing camera data from Maya to TVPAINT.
Trailer
[vimeo]https://vimeo.com/560720247[/vimeo]
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Some stills BTS

Hope you like it!