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    The dreaded moire effect

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    • EdsonE Offline
      Edson
      last edited by

      this is a follow up to my search for a perforated metal sheet image.

      almost always when there is a repetition of an element many times there comes the so called moire effect, those ripples and circles that appear on facades, like in the image below.
      moire.png
      is there a way to get rid of it or at least improve it without letting go of the repetitive elements?

      edson mahfuz, architect| porto alegre β€’ brasil
      http://www.mahfuz.arq.br

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      • GaieusG Offline
        Gaieus
        last edited by

        Edson,

        Try to export at REALLY high "pixealge" (as this is due to screen definition) and then reduce it in an aexternal image editor with filters (like AA) for this.
        Alsdo you can "experiment" with the "native" AA settings of SU when exporting an image - but high definition preferrably.

        Gai...

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        • J Offline
          jwbrockman
          last edited by

          Here is a detail of a project that uses those two textures I posted earlier. I exported this at 9000x6000 pixels for a final image size of 3000x2000, reduced in photoshop. This mitigates the dreaded moire effect πŸ˜„.


          perf.jpg

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          • PixeroP Offline
            Pixero
            last edited by

            The moire comes from SketchUp beeing lousy at texture filtering.
            That is exactly why I made this post in the Wishlist forum:
            http://www.sketchucation.com/forums/scf/viewtopic.php?f=10&t=4676
            Let your voice be heard so that they fix it. πŸ˜‰

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            • DanielD Offline
              Daniel
              last edited by

              Edson, your graphics card's anti-aliasing capabilities will affect that.

              My avatar is an anachronism.

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              • T Offline
                Tim Danaher
                last edited by

                Edson --

                In addition to what Daniel said, if you have an ATi card in your Mac, you can use the ATi Displays control panel to set various levels of Anti-aliasing and Anisotropic filtering. That might help you...

                Cheers,

                Tim

                http://vizarch.blogspot.com

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                • M Offline
                  Mr S
                  last edited by

                  @gaieus said:

                  Edson,

                  Try to export at REALLY high "pixealge" (as this is due to screen definition) and then reduce it in an aexternal image editor with filters (like AA) for this.
                  Alsdo you can "experiment" with the "native" AA settings of SU when exporting an image - but high definition preferrably.

                  I also would like to use this method to solve this problem.
                  But as mentioned in a previous thread (http://www.sketchucation.com/forums/scf/viewtopic.php?f=15&t=3948) I and many others still can't render at these high resolutions.
                  And as far as I can tell, Google don't seem to have a solution to this.
                  Grrr...

                  Regards
                  Mr S

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                  • EdsonE Offline
                    Edson
                    last edited by

                    thank you all. at least now i know who or what the culprit is. i will try to save at a higher definition to see if it helps.

                    tim, my macbook pro has a GeForce 8600 GT card. i wonder if it comes with a control panel. where could it be?

                    edson mahfuz, architect| porto alegre β€’ brasil
                    http://www.mahfuz.arq.br

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                    • DanielD Offline
                      Daniel
                      last edited by

                      Edson, I don't have a mac, but spoke with someone here who does. You might find the NVIDIA icon in your dock, which will open up the control panel. I've got GeForce 8600 at home (Windows XP) and it does have the control panel, so I assume it is the same for a Mac.

                      My avatar is an anachronism.

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                      • O Offline
                        otb designworks
                        last edited by

                        Edson, check in your System Preferences, maybe something useful there?

                        Tim, I have an ATI card in my Macbook Pro, where would I find this control panel you speak of? don't remember seeing anything like that in my system preferences?

                        Also, FWIW, about the only thing I have found to really help the moire is reducing the contrast in the texture image. Taking the time to minimize the contrast as much as possible actually will make a noticeable difference. As my way of self rationalizing the unavoidable effect, at least it happens in meat space, too. πŸ’š

                        Cheers, Chuck

                        OTB Designworks is on Youtube

                        6 core nMP, 32 gig RAM, (2) D700 GPU's, dual monitors

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                        • EdsonE Offline
                          Edson
                          last edited by

                          daniel and chuck,

                          so far i have found nothing, nor a control panel nor a driver from nvidia at their site. but i shall persist...

                          edson mahfuz, architect| porto alegre β€’ brasil
                          http://www.mahfuz.arq.br

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                          • T Offline
                            Tim Danaher
                            last edited by

                            @edson said:

                            thank you all. at least now i know who or what the culprit is. i will try to save at a higher definition to see if it helps.

                            tim, my macbook pro has a GeForce 8600 GT card. i wonder if it comes with a control panel. where could it be?

                            Sadly, it doesn't. Even though Apple writes both the ATi and nVidia drivers for the cards in Macs, the nVidia cards don't have this facility. The ATi control panel is provided by ATi themselves to provide additional functionality over and above that provided by the apple drivers -- nVidia simply don't do this. It's a real shame.

                            Cheers,

                            Tim

                            http://vizarch.blogspot.com

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                            • T Offline
                              tomsdesk
                              last edited by

                              Edson, try adjusting the view slightly (orbit, pan, zoom), also the field of view...and if you can stand the inaccuracy: the scale of the texture. A little bit of play can change the effect quite a bit.

                              I have noticed also that sometimes it shows in the export, as you would expect, but sometimes it doesn't...?

                              http://www.tomsdesk.moonfruit.com/
                              2.5D Trees & Shrubs!

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