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Visual Signal Processing Algorithms in Post Production

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  • UserDr Anil Kokaram, Trinity College Dublin and Simon Robinson, Chief Engineer, The Foundry
  • ClockWednesday 18 February 2009, 14:15-15:15
  • HouseLR5, Engineering, Department of.

If you have a question about this talk, please contact Rachel Fogg.

In the minds of most movie goers, cinema post-production is the act of creating “groovy” special effects which entail synthesising scenes that could not be filmed in real life e.g. people running along the slender ends of young bamboo trees, or dinosaurs jogging through a city garden. To make this happen, the modern post-production workflow has evolved into a sophisticated workflow in which a large variety of diverse creative and algorithmic tasks are coordinated to achieve a finished product. What is suprising is the amount of signal processing technology in the workflow that is needed for manipulating 2D pictures regardless of the requirement for 3D special effects. Tasks such as noise reduction, “dust busting”, matting, rotoscoping, colour correction, retiming, brightness balancing, and the curious procedure called “conforming”, are all heavily signal processing based and have evolved to include a range of Monte Carlo and Bayesian Statistical Signal Processing techniques. The Signal Processing for Media Applications Group ( at Trinity College Dublin has been working in this area for some time together with The Foundry ( The talk exposes some of these hidden signal processing tasks that lie in the post-production pipeline and also devotes some time to showing the kind of software tools that are commonly used in the industry.

This talk is part of the Signal Processing and Communications Lab Seminars series.

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