Visual Connections-Visual Effects India

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INFORMATION
Film makers in film industry use various media to
convert their scripts to photographic reality.
VFX can be categorized into-
Matte Painting Rotoscoping
Compositing Motion Tracking
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• History

• Visual effects augment live action but artists
  and tools are used for computer graphic animated
  movies, titles, logos, 2D to 3D conversion etc.
  In earlier days Film makers used matte painting,
  miniature models trick photography to give
  special effects which is now perfected by the
  application of CGI (Computer Generated Imagery).

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There are commonly used software and techniques
in Film Industry to create visual effects. In
traditional cinemas matte paintings were painted
on large sheets of glass, which are painted
digitally nowadays to generate 3D environments.
Once the photographed images are projected on
glass panels using rotoscope by the animators,
images look lively. This process is named as
rotoscoping which is done by computers presently.
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• Rotoscoping is the technique of physically
  modifying or video footage frame by frame. It
  creates perfect illusion of a set, location or
  landscape which is not possible in real life..

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• Compositing is the process of combining several
  motions into one composite motion creating an
  illusion that all those motions are parts of the
  same scene. Compositing is digital image
  manipulation. In the digital method of
  compositing, software commands label a narrowly
  defined colour as the part of an image to be
  replaced.

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• Compositing is also named as Chroma key, blue
  screen, green screen etc. Chroma key composting
  is a visual effects technique which is used in
  removing a background from the subject of a photo
  or video. This technique is mostly preferred in
  news casting and motion pictures.
• For example, in live newscasts news presenter
  seems to be standing in front of a map or live
  actions goes on behind him, though in reality
  its a blue or green background. Blue and green
  colors are preferably used because they are
  distinct from most human skin colors.

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Match moving
It is a technique referred to as motion tracking
which allows insertion of computer graphics into
live action. Motion capture requires special
cameras and sensors and a controlled environment.
Match moving is mostly software based established
visual-effects tool used in live Television
Broadcasts. Currently real time camera tracking
is widely used in feature film production to
allow virtual characters to be inserted in post
production to visualize live on-set. This is
beneficial in helping directors and actors to
improve their performances as both real and
non-real characters can be choreographed
together. They are no longer performing in blue
or green screens.
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Motion tracking
captures motion of objects or people. In animated
movies animated character movements are made by
tracing an actors motions and movements. These
recorded moves are projected onto animation table
frame wise with right position, scale,
introduction and motion in respect to the
captured objects which replicates exactly the
live-action movements of the actor. Motion
capture method is extensively used to produce
films which simulate the look of live action
cinema.
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Video tracking
systems employ a motion model which describes
motion of targeted image as per the different
possible motions of the object. Its used in
security and surveillance, human-computer
interaction, video communication, traffic
control, medical imaging.
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Clean up animation
is the process of creating the final drawings in
a finished movie. A rough drawing once approved
by the director is given to a clean-up artist to
prepare clean versions of the drawings. These
artists are responsible for the final and
finished look of the shot. VFX is widely used in
Hollywood movies and has made a successful entry
into Indian Film Industry too. It is growing at a
faster pace with adoption of new technology and
advancements.