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    Projecting onto a curved wall

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    • O
      olialonso last edited by

      dbini

      https://vimeo.com/29877867

      This may help
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      • dbini
        dbini last edited by

        thank you @olialonso.

        John Collingswood
        taikabox.com
        2013 MBPR 2.3GHZ i7 OSX11.7.4 16GB
        & 2019 MBPT 2.6GHZ i7 OSX12.3 16GB

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        • Maximortal
          Maximortal last edited by

          add this feature of mapio in isadora wish list for Mark  ;-)

          Iro Suraci | Win 10 - Ryzen 3600 - 32GB - nVidia gtx 960 4gb / Win 10 - i5 4210U - 8 GB - R5 M230 | Isadora 3.0.7| Located in Brescia, Italy

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          • fubbi
            fubbi last edited by

            There is always just one focus plane though. You cant force a projector to be sharp at different depths. But your wall is so big I say just map it. The curvature is not that extreme.

            At the end of the day, the nature of your content is important. Mathematically correct geometry is tricky, if its anything like abstract then you can get away with a lot.
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            • jhoepffner
              jhoepffner last edited by

              @ dbini

              You can also use mapping with bezier curve, as fubbi said, it can be sufficient. Depend of the images

              Jacques Hoepffner http://hoepffner.info
              GigaByte 550b / Ryzen 7 3800X / Ram 64 Go / RTX 3090 24 Go / SSD 2 To / raid0 32 To
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              MSI GS65 i7 3.6 Ghz 32 Go / GTX 1070 8 Go / Windows 10 / Izzy 3.0.3b2

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              • mark_m
                mark_m last edited by

                Am I correct in thinking that you can deepen the focal plane with a projector lens that has variable aperture?

                Intel NUC8i7HVK Hades Canyon VR Gaming NUC, i7-8809G w/ Radeon RX Vega M GH 4GB Graphics, 32GB RAM, 2 x NVMe SSD
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                • jhoepffner
                  jhoepffner last edited by

                  yes, as in photography but:

                  1) I dont know any beamer with variable aperture
                  2) you loose luminosity (half by aperture step)

                  Jacques Hoepffner http://hoepffner.info
                  GigaByte 550b / Ryzen 7 3800X / Ram 64 Go / RTX 3090 24 Go / SSD 2 To / raid0 32 To
                  MBP 13' i5 2.6 Ghz 16 Go / Intel Iris / macOs 10.11.6 / izzy 2.6.1 + 3.0.3b2
                  MBP 15' i7 2.6 Ghz 16 Go / GTX 650M 1Go/ MacOs10.13.3 / Izzy 2.6.1
                  MSI GS65 i7 3.6 Ghz 32 Go / GTX 1070 8 Go / Windows 10 / Izzy 3.0.3b2

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                  • dbini
                    dbini last edited by

                    this is all really useful, thanks people.

                    I tend to agree with Fubbi that there's no point making perfect mapping if the content is weak. I think i'd rather fill the wall with abstraction and movement, rather than create a perfectly clear image on a section of it. The museum seem to be more interested in the concept of interactivity, rather than pristine imagery. I think IzzyMap will be flexible enough to trim the source to fit the wall. A superwide lens will help to keep edges in focus. I think the best option is to do an after-hours site visit with a couple of beamers and play around with positioning.
                    John

                    John Collingswood
                    taikabox.com
                    2013 MBPR 2.3GHZ i7 OSX11.7.4 16GB
                    & 2019 MBPT 2.6GHZ i7 OSX12.3 16GB

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                    • LPmode
                      LPmode Beta Silver last edited by

                      I have several curved walls projections. I can say that it is a bit tricky using short-throw projectors and that it should be easier to use long lenses. I use a grid and instead of bezier curves and I incrementally increase the divisions in the grid options as I adjust the points. There is a bug in the grid field when entering double digits so I usual paste the number in rather than typing.

                      here are some installation with two projector 0.6 lenses converging 100% on a curved wall. the projectors themselves are offset about 5 feet apart with the image inverted to create a double shadow /color revealing effect
                      https://goo.gl/photos/jNio7dJtuZjP2q7S8
                      here is another similar installation with blended projectors. you can see the red lines marks for the actual edge of the frame, as well as the unblended areas
                      https://goo.gl/photos/B4G17i1nyXby7wNm6
                      most installations I have done are interactive and use isadora and izzymap. they can get tedious at times and that some things can never be perfect.

                      M1 Max 32GB + ThinkPad P72 64GB Quadro P5200 W10. liviu.stoptime.live

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                      • dbini
                        dbini last edited by

                        Thanks @LPmode - great info

                         - the double colour installation is lovely! -

                        John Collingswood
                        taikabox.com
                        2013 MBPR 2.3GHZ i7 OSX11.7.4 16GB
                        & 2019 MBPT 2.6GHZ i7 OSX12.3 16GB

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