Generalised compositing

  • Authors:
  • Philip Willis

  • Affiliations:
  • University of Bath, UK

  • Venue:
  • Proceedings of the 5th international conference on Computer graphics and interactive techniques in Australia and Southeast Asia
  • Year:
  • 2007

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Abstract

We revisit the assumptions behind traditional image compositing techniques. By analysing the process we separate the colour operations from those for coverage and show that this usefully leads to a more general compositing equation than previously used. We then examine the colour operations in more detail and show how new operations can easily be incorporated in a standard compositor. Practical examples show the new approach and reveal some beneficial effects, not previously achievable within a compositor.