what process is that?
A system to taxonomize human facial movements by their appearance on the face
Facial Action Coding System
Facial Action Coding System (FACS) is a system to taxonomize human facial movements by their appearance on the face, based on a system originally developed by a Swedish anatomist named Carl-Herman Hjortsjö. 
what is compsognathus? A genus of small, bipedal, carnivorous theropod dinosaur. how does it look like? Chicken-sized, small, bipedal, long hind legs; the forelimbs were smaller than the hindlimbs; the hand bore two large, clawed digits and a third, smaller digit that may have been non-functional; delicate long narrow skull with tapered snouts. who discovered the species? Joseph Oberndorfer were there any films or literature which speaks of these species? Yes - in Children's dinosaur books, in the movie - Jurassic Park III what techniques were used in the film to bring the creatures on the screen? Computer-generated imagery (CGI), animatronics. where was the film shot? Mokulēia, Hawaii ;  Occidental College in Los Angeles, California can you tell me something about the latter technique? It is a multi-disciplinary field which integrates puppetry, anatomy and mechatronics. how is emotion captured? Facial Action Coding System (FACS)
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Facial Action Coding System [SEP] Introduction
Facial Action Coding System (FACS) is a system to taxonomize human facial movements by their appearance on the face, based on a system originally developed by a Swedish anatomist named Carl-Herman Hjortsjö. It was later adopted by Paul Ekman and Wallace V. Friesen, and published in 1978. Ekman, Friesen, and Joseph C. Hager published a significant update to FACS in 2002. Movements of individual facial muscles are encoded by FACS from slight different instant changes in facial appearance. It is a common standard to systematically categorize the physical expression of emotions, and it has proven useful to psychologists and to animators.