The human side of Avatar

Written by Alexandra Silveira
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Motion capture suits allow movie makers to simulate the movements of real actors! Motion capture suits allow movie makers to simulate the movements of real actors! iStock
Avatar is currently one of the most popular films in the world and it’s easy to see why: the 3D film’s depiction of the 10 foot-tall blue aliens, the Na’vi, and their exotic home world of Pandora, looks real.
 
Using state-of-the-art motion capture technology and computer generated imagery (CGI), writer and director James Cameron successfully creates a visually captivating world.
  • Fast Fact: James Cameron had the idea for Avatar before his 1998 blockbuster, Titanic, but had to wait more than a decade for technological advances in order to make this film.
The “Simulcam” camera is one of the many technologies Cameron relied upon to make the action seem real. This camera allowed him to see the actors as their CGI-selves and to visualize the scenery around the actors in real time, as they actually occurred. By seeing how the animated actors interacted with each other and with the animated scenery, Cameron was able to better direct the actors to make the movie seem more realistic.
 
To film Avatar, actors wore tight-fitting motion-capture suits that contained sensors. Cameras were then used to track the movements of the sensors, and therefore the actors, many times per second. A special type of motion capture, called performance capture, was used to realistically track facial movements. The actors wore head gear fitted with a small camera that would take detailed pictures of facial features, such as pores and wrinkles, and expressions!
  • Fast Fact: Previously, facial capture was done with a series of sensors placed on the face. Only a few sensors were used at a time, thereby limiting the diversity of expressions captured.
The images generated by motion and performance capture were then used by computer animators to create an image from the model, a process known as rendering. Using highly specialized software, computers with fast processors, and lots and lots of computer memory, animators were able transform the movement and facial expressions of each actor into their Na’vi counterpart.
  • Fast Fact: About 70 per cent of the footage in the Avatar is CGI.
James Cameron and his movie, Avatar, have redefined the 3D genre of movies, making them seem more life-like than ever before. It kind of makes you wonder what we’ll see from Cameron in another 10 years…
 
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Alexandra Silveira

Alexandra Silveira

I just received my PhD from the pathology department at the University of Alabama at Birmingham. I currently live in Providence, Rhode Island and co-manage the Entertainment section of CurioCity. In my spare time I read about science, watch horrible comedies, and am an aspiring Rock Band rock star.

More in this category: « Body Worlds 2 Exhibit

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