Blue screen matting

@article{Smith1996BlueSM,
  title={Blue screen matting},
  author={Alvy Ray Smith and James F. Blinn},
  journal={Proceedings of the 23rd annual conference on Computer graphics and interactive techniques},
  year={1996}
}
  • Alvy Ray Smith, J. Blinn
  • Published 1 August 1996
  • Mathematics
  • Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
A classical problem of imaging—the matting problem—is separation of a non-rectangular foreground image from a (usually) rectangular background image—for example, in a film frame, extraction of an actor from a background scene to allow substitution of a different background. Of the several attacks on this difficult and persistent problem, we discuss here only the special case of separating a desired foreground image from a background of a constant, or almost constant, backing color. This backing… 

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