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    Alpha Mask with Live Video

    How To... ?
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    • vanakaru
      vanakaru last edited by

      I would go for IR lighting the screen and IR capable camera that will see the moving body as a shadow. You may need to filter IR from projector.

      MBP 4.1 & MBP (Retina, Mid 2012) MBP Retina 2017

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      • S
        stj last edited by

        This thread has a lot of information that might help you:

        http://troikatronix.com/community/#/discussion/265/tracking-two-dancers

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        • Michel
          Michel Izzy Guru last edited by

          THIS youtube video that Mark posted about the technology used in 16 revolutions can help you aswell.

          Best,
          Michel

          Michel Weber | www.filmprojekt.ch | rMBP (2019) i9, 16gig, AMD 5500M 8 GB, OS X 10.15 | located in Winterthur Switzerland.

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          • K
            kevinjesuino last edited by

            Hi there,

            I'm in the same boat except I am using a Kinect + Isadora. 
            I'm trying to create a similar effect as in this one created by Graham 
            http://www.youtube.com/watch?v=Spd77d6yZ-s&list=UUhr7aQm3W7xQmn4YblveryA&index=21
            Could someone give me a lead please? 
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            • Skulpture
              Skulpture Izzy Guru last edited by

              I never saved that patch it was a quick demo I did for some ex students but it something along these lines.... (open in a new tab its quite big) 0c5c98-screen-shot-2013-03-13-at-08.54.37.png

              Graham Thorne | www.grahamthorne.co.uk
              RIG 1: Custom-built PC: Windows 11. Ryzen 7 7700X, RTX3080, 32G DDR5 RAM. 2 x m.2.
              RIG 2: Laptop Dell G15: Windows 11, Intel i9 12th Gen. RTX3070ti, 16G RAM (DDR5), 2 x NVME M.2 SSD.
              RIG 3: Apple Laptop: rMBP i7, 8gig RAM 256 SSD, HD, OS X 10.12.12

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              • eight
                eight last edited by

                @Skulpture I noticed in your video that the mask has a nicely defined smooth edge, compared to what raw data from kinect will give you. Do Gaussian Blur and Motion Blur do that, or NI Mate? What happens without the Blur filters?

                Thanks.
                --8

                Analysis: http://post.scriptum.ru | Synthesis: http://onewaytheater.us
                Twitter: https://twitter.com/eight_io | Flickr: http://www.flickr.com/photos/eight_io/
                Github: https://github.com/eighteight | MulchCam: https//mulchcam.com
                MulchTune: https://itunes.apple.com/us/app/mulch-tune/id1070973465 | Augmented Theatre: https://augmentedtheatre.com

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                • Skulpture
                  Skulpture Izzy Guru last edited by

                  Yeah it nearly always needs some blur.

                  I used to knock old CCTV cameras out of focus slightly to get similar results rather than adding blur in the software. But with ever increasing faster machines i started adding it into the software. Normally Gaussian Blur on 1 or 2 works nicely.

                  Graham Thorne | www.grahamthorne.co.uk
                  RIG 1: Custom-built PC: Windows 11. Ryzen 7 7700X, RTX3080, 32G DDR5 RAM. 2 x m.2.
                  RIG 2: Laptop Dell G15: Windows 11, Intel i9 12th Gen. RTX3070ti, 16G RAM (DDR5), 2 x NVME M.2 SSD.
                  RIG 3: Apple Laptop: rMBP i7, 8gig RAM 256 SSD, HD, OS X 10.12.12

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                  • David
                    David last edited by

                    Hi Guys,
                    Thanks to @Skulpture I was able to create this new interactive piece : Indicible Camouflage
                    I'm presenting it next week to a jazz event and I realise that in Ni Mate only the active user's alpha in active.
                    Is there a way to capture all alphas no matter how many peaple stand infront of the devise ?

                    Thank you all for your great knowledge !

                    David

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                    • Skulpture
                      Skulpture Izzy Guru last edited by

                      Glad i've helped you David. Be sure to take some pictures and I wil put them on my blog.

                      :-)

                      Graham Thorne | www.grahamthorne.co.uk
                      RIG 1: Custom-built PC: Windows 11. Ryzen 7 7700X, RTX3080, 32G DDR5 RAM. 2 x m.2.
                      RIG 2: Laptop Dell G15: Windows 11, Intel i9 12th Gen. RTX3070ti, 16G RAM (DDR5), 2 x NVME M.2 SSD.
                      RIG 3: Apple Laptop: rMBP i7, 8gig RAM 256 SSD, HD, OS X 10.12.12

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                      • David
                        David last edited by

                        Thanx @Skulpture I will do so !!

                        :-)
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                        • bruno
                          bruno last edited by

                          Hello Sculpture, i tried your patch but instead of the syphon actors , I used kinnect actor and the kinnect. My goals is to project video on a dancer. Do you think it's possible with the kinnect? Wher can I find the QC syphon actors? I send you a picture of my patch, just have a look on the right side.

                          Thank you for all your work
                          Best wiches
                          Bruno

                          b87947-kinnect.tiff

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                          • Skulpture
                            Skulpture Izzy Guru last edited by

                            @bruno

                            It looks like you will need a threshold actor - this will boost the white and make the black/grey more black. (if that makes sense?)
                            Out it directly after the output from the Kinect Actor.

                            Graham Thorne | www.grahamthorne.co.uk
                            RIG 1: Custom-built PC: Windows 11. Ryzen 7 7700X, RTX3080, 32G DDR5 RAM. 2 x m.2.
                            RIG 2: Laptop Dell G15: Windows 11, Intel i9 12th Gen. RTX3070ti, 16G RAM (DDR5), 2 x NVME M.2 SSD.
                            RIG 3: Apple Laptop: rMBP i7, 8gig RAM 256 SSD, HD, OS X 10.12.12

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                            • C
                              cocoberdu last edited by

                              hello everybody.

                              i have some troubles to use the kinect with my new mac book pro. 
                              i have nimate license but it crashed at launch , like synapse....
                              i plugged the kinect on the usb3 on my mac and i think its the problem.
                              but i dont have any other usb2 port.....
                              do you know a solution about that?
                              thats a lot

                              mbp i5;16 go, osx 10.9.4, isadora 1.5.3f28
                              website: www.desequilibres.com

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                              • Fred
                                Fred last edited by

                                I use a kinect on a new macbook with only USB3 ports and no problems.

                                http://www.fredrodrigues.net/
                                https://github.com/fred-dev
                                OSX 13.6.4 (22G513) MBP 2019 16" 2.3 GHz 8-Core i9, Radeon Pro 5500M 8 GB, 32g RAM
                                Windows 10 7700K, GTX 1080ti, 32g RAM, 2tb raided SSD

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                                • Armando
                                  Armando Beta Gold last edited by

                                  Me too no problems

                                  Armando Menicacci
                                  www.studiosit.ca
                                  MacBook Pro 16-inch, 2021 Apple M1 Max, RAM 64 GB, 4TB SSD, Mac OS Sonoma 14.4.1 (23E224)

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                                  • Skulpture
                                    Skulpture Izzy Guru last edited by

                                    It won't be the USB ports. It will be software/driver related.

                                    Graham Thorne | www.grahamthorne.co.uk
                                    RIG 1: Custom-built PC: Windows 11. Ryzen 7 7700X, RTX3080, 32G DDR5 RAM. 2 x m.2.
                                    RIG 2: Laptop Dell G15: Windows 11, Intel i9 12th Gen. RTX3070ti, 16G RAM (DDR5), 2 x NVME M.2 SSD.
                                    RIG 3: Apple Laptop: rMBP i7, 8gig RAM 256 SSD, HD, OS X 10.12.12

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                                    • C
                                      cocoberdu last edited by

                                      ok thanks for your answers. .....

                                      mbp i5;16 go, osx 10.9.4, isadora 1.5.3f28
                                      website: www.desequilibres.com

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                                      • zanetti
                                        zanetti last edited by

                                        @Skulpture
                                        Hi, regarding your screenshot I wanted to know if the video actors are gpu based and if so, because of the core video plugin?

                                        I have a similar arrangement with my kinect. But becuase its all vid-cpu obviously its very laggy.
                                        It's gonna be a big projection, video-installation project. So its quite crucial, that the resolution is the maximum.
                                        I would be probably able to borrow a new mac pro for the exhibition, but it seems weird to me that my computer can only make 6-10 fps.

                                        The isadora project won't exceed this two video layers and the alpha mask probably. so its fairly simple. its just the performance, which disturbs me.
                                        and second question: is this gone with izzy 2? Because my uni owns the v1 license and it would be probably worth to upgrade for that 125$...

                                        Thanks for helping!!!

                                        Leo

                                        I have MBP early 2011, i7 2,2 GHz with an ATI Radeon 6750M 1GB and 16GB Ram.
                                        38b80a-bildschirmfoto-2015-01-28-um-12.31.17.png

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                                        • Skulpture
                                          Skulpture Izzy Guru last edited by

                                          Hi,

                                          Yes the screen shot of mine from March 2013 is all CPU based; I don't think I even had access to much GPU stuff back then; or if I was I was under strict orders from the boss not to tell anyone. :-)
                                          You do want to keep it as much GPU as possible. But it can get complicate; because there is no GPU alpha mask actor just yet so you'd need to convert it to CPU again. 
                                          But the movies themselves could be the new version 2.0 players which should help frame rates - with the right h264 codec.
                                          I get a lot of questions, emails and PM's about this topic so it may be time to revisit it and give it a refresh.
                                          I am not sure what you mean by _"__and second question: is this gone with izzy 2"_ - is what gone? Sorry, not following.
                                          Hope this helps for now.

                                          Graham Thorne | www.grahamthorne.co.uk
                                          RIG 1: Custom-built PC: Windows 11. Ryzen 7 7700X, RTX3080, 32G DDR5 RAM. 2 x m.2.
                                          RIG 2: Laptop Dell G15: Windows 11, Intel i9 12th Gen. RTX3070ti, 16G RAM (DDR5), 2 x NVME M.2 SSD.
                                          RIG 3: Apple Laptop: rMBP i7, 8gig RAM 256 SSD, HD, OS X 10.12.12

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                                          • zanetti
                                            zanetti last edited by

                                            oh what I meant is, if version 2 of isadora (I though you're all calling it izzy :)) is not gonna have this kind of problems because more actors are gpu based.

                                            so the core video upgrade is good for what exactly? For better hardware acceleration in some specific actors I suppose?
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