Sony Pictures Imageworks Inc. is a Canadian visual effects and computer animation studio headquartered in Vancouver, British Columbia, with an additional office on the Sony Pictures Studios lot in Culver City, California. SPI is a unit of Sony Pictures Entertainment's Motion Picture Group.
The company has been recognized by the Academy of Motion Picture Arts and Sciences with Oscars for their work on Spider-Man 2 and the computer-animated short film The ChubbChubbs!, and received many other nominations for their work.
Sony Pictures Imageworks was formed in 1992 with five employees to use computers to help plan complicated scenes for live-action films. Located in the former TriStar building, their first work was a previsualization for the 1993 film Striking Distance.
During 2009-2010, SPI made transition from traditional biased, multi-pass rendering system to a largely singlepass, global illumination system incorporating modern ray-tracing and physically based shading techniques. Arnold was used on projects such as Monster House, Cloudy with a Chance of Meatballs, 2012, Alice in Wonderland, The Smurfs, Arthur Christmas and is being used on all upcoming SPI's films.
According to wikipedia.org