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RIGS & MOTION
CAPTURE
By: Jennifer Marcial and Juan m. lopez
A presentation on animation film-
making, and how it works.
DEFINITIONS
*Rigs-Steadicam is a brand of camera
stabilizer mount for motion picture cameras that
mechanically isolates it from the operator's
movement. It allows for a smooth shot, even when
moving quickly over an uneven surface. The
Steadicam was invented by cameraman Garrett
Brown and was introduced in 1975.
DEFINITIONS
*Motion Capture-Motion capture (Mo-cap for short)
is the process of recording the movement of objects or people. It is
used in military, entertainment, sports, medical applications, and for
validation of computer vision and robotics. In filmmaking and video
game development, it refers to recording actions of human actors, and
using that information to animate digital character models in 2D or 3D
computer animation.
HISTORYYou probably know motion-capture as the thing with
the ping pong balls and the silly lycra suits. Well,
you're not wrong. In actual fact, rudimentary motion-
studies have been around since the 19th century, pre-
dating cinema itself, and were primarily used for
understanding better how humans and animals move.
Late in the 20th century, before it was co-opted by
Hollywood, motion-capture was a photogrammetric
analysis tool in the field of biomechanics, and was
used for sports, education and even videogames.
CONTINUATION
Sinbad: Beyond the Veil of Mists was the first
movie made primarily with motion capture.
The first fully computer generated feature film was
1995's Toy Story however the first animated film to
use CGI was 1983's Rock & Rule.
WHAT MAKES A MOTION CAPTURE MOVIE?
You need a specific camera in order to capture
each move the actor/ subject makes. It looks like
this.
HOW THE MOTION CAPTURE WORKS
The simplest rundown is that live actors' motions are digitally recorded and then
applied to 3D models. The physical recording itself can be done through one of two
methods: the actor can wear a cumbersome bodysuit wired with complex sensors that
detect their movements, or they can attach smaller singular sensors at pivotal points to
capture the motion of those particular joints and interpret it into full-limb motion. these
digital readings are fed into linked computers, where they are recorded and interpreted
into motion sequences by programs like MetaMotion's Kaydara. From there the
recorded sequences can be imported into 3D animation programs such as 3D Studio
Max, and then applied to character models by mapping recorded motion data onto key
points defined on the 3D models. There is still a great deal of work involved in
interpreting the data correctly, and if even one mistake is made in recording the
motions, sometimes the entire scene must be re-shot.
WHAT MAKES A RIG ANIMATION?
The process of making a rig animation is by using a
computer. It looks like this.
HOW RIG ANIMATION WORKS
The animator uses a computer to generate a sequence of
still images, that give the illusion of motion through three
dimensional space when you play them. You require a 3D
animation software, such as 3DMax or Maya, and a good
computer. Instead of drawing every detail in the frame by
hand, you draw every frame using a computer! The
animator gives the software a set of parameters that
describes how the elements should look and move.
PICTURES
PICTURES
VIDEO LINK
EXTRA