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    [ANSWERED] Make a good Black & White mask from a not so contrasty video feed

    How To... ?
    mask alpha
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    • tease
      tease last edited by Woland

      Hello community,

      I use a lot of live B&W alpha mask to do mapping of moving objects.

      I take the IR camera feed, contract it to make a mask out of it, mask that I use to project directly on the object.

      I use to have a nice Max patch do to the mask, that I feed in Isadora in syphon, but I'd like to do it now directly in Isadora to loose part of the latency.

      So far I get this (original IR cam > result): 


      with this few actors:


      I'd like to get to this kind of contrast:


      Any Idea, possibly staying with vid-gpu actors ?

      Thank you for your inputs, Best,

      Thomas Israël : Mac Studio M1 Max 32Go Ventura & MBP 2016 10.15.7 i7 16Go Intel HD 530 1536Mo - located in Belgium - France - Brasil
      Digital art - performance - Opera - installation - interactivity - sculpture / 18 years on Isadora / mac, hack & PC - www.thomasisrael.be & https://linktr.ee/thoisr

      bonemap 1 Reply Last reply Reply Quote 1
      • bonemap
        bonemap Izzy Guru @tease last edited by

        @tease

        Hi,

        The Threshold actor could work. I can’t recall if it is gpu video module.

        http://bonemap.com | Australia
        Izzy STD 4.2 | USB 3.6 | + Beta
        MBP 16” 2019 2.4 GHz Intel i9 64GB AMD Radeon Pro 5500 8 GB 4TB SSD | 14.5 Sonoma
        Mac Studio 2023 M2 Ultra 128GB | OSX 15.3 Sequoia
        A range of deployable older Macs

        1 Reply Last reply Reply Quote 2
        • mark
          mark last edited by

          @bonemap said:

          The Threshold actor could work. I can’t recall if it is gpu video module.

           It is GPU based.

          Media Artist & Creator of Isadora
          Macintosh SE-30, 32 Mb RAM, MacOS 7.6, Dual Floppy Drives

          1 Reply Last reply Reply Quote 2
          • tease
            tease last edited by

            @bonemap said:

            The Threshold actor

             Indeed, how did I forgot this actor! thanks!

            result image:

            Thomas Israël : Mac Studio M1 Max 32Go Ventura & MBP 2016 10.15.7 i7 16Go Intel HD 530 1536Mo - located in Belgium - France - Brasil
            Digital art - performance - Opera - installation - interactivity - sculpture / 18 years on Isadora / mac, hack & PC - www.thomasisrael.be & https://linktr.ee/thoisr

            1 Reply Last reply Reply Quote 1
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