| 摘要 |
To characterize film grain, a Film Grain Characterizer ( 23 ) receives an incoming information stream ( 12 ) and a filtered information stream ( 24 ) from which the film grain has been removed. From these streams, the Film Grain Characterizer ( 23 ) outputs a message that contains an identity of a model for simulating grain, as well at least one of a set of several parameters, including correlation parameters, intensity-independent parameters and intensity-dependent parameters used by the identified model. An encoder ( 26, 13 ) encodes the film grain information for subsequent transmission.
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