Nuke Expressions Node

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  • #205639
    Anonymous
    Inactive

    Hi,
    I Trying RGB & CMYK Matte Need To Extract Color and Convert to Cmyk to Rgb
    I Convert to Cmyk to Rgb and Extract Rgb
    i using Expressions node in nuke getting some problem in my Expressions
    i need Alpha Expressions to help to comp,help in my Alpha Expressions(Using only Signal Expressions node )
    Please Refer this IMG
    http://www.freeimagehosting.net/g1tap

    Thanks,
    Rajesh Suralkar

    #220064
    Aaron Sorensen
    Participant

    For the one on the left you could try..
    r+g+b==3?0:a
    EDIT: to remove the other outer parts you could do this..
    r+g+b>2?0:r+g+b<2?0:a

    And the one on the right..
    r+g+b>1?0:a

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