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Pure white background but black line around model (help)

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  • F Offline
    fvweert
    last edited by 31 May 2015, 17:09

    Hello guys,

    I want to render a model with a pure white background.
    In the Environment-settings I set the background color to 255,255,255.
    In the Color mapping menu I unchecked the "affect background" option.
    I used the catmull-rom filter in the anti-aliasing settings, because I like the sharpness.
    If I do that, the background is white, but the model itself has a small black border.
    Without unchecking the affect background color, the background turns out grey, but no black lines.

    What can I do to create a white background, with the catmull-rom filter but without the black line bordering my model?

    Thanks!


    white background.jpg


    white background affect.jpg

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    • F Offline
      fvweert
      last edited by 2 Jun 2015, 20:46

      38 other people don't know it too I guess :-0...

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      • J Offline
        JQL
        last edited by 2 Jun 2015, 22:06

        Well I didn't really understand your problem at first but I'm starting to think I do now...

        You mean the jagged/stepped edge around the model?

        It has to do with GPU display + Antialiasing + probably backface color.

        Use a white backface color (background color) and it gets better (it is better with grey background).

        Use better settings for displaying Sketchup under your GPU settings (I have a NVidia Titan X and still had to do that for it to display nicer edges). If you push settings to maximum detail (and lesser performance) you'll correct that on screen. There are advanced details you can configure by software too. Mess with antialiasing there...

        If that is not a printscreen but an export, you should check if antialiasing is active on raster export options. If that doesn't solve it, increase resolution to something like double, and then shrink the image to the final size.

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        • F Offline
          fvweert
          last edited by 3 Jun 2015, 08:18

          @jql said:

          Well I didn't really understand your problem at first but I'm starting to think I do now...

          You mean the jagged/stepped edge around the model?

          It has to do with GPU display + Antialiasing + probably backface color.

          Use a white backface color (background color) and it gets better (it is better with grey background).

          Use better settings for displaying Sketchup under your GPU settings (I have a NVidia Titan X and still had to do that for it to display nicer edges). If you push settings to maximum detail (and lesser performance) you'll correct that on screen. There are advanced details you can configure by software too. Mess with antialiasing there...

          If that is not a printscreen but an export, you should check if antialiasing is active on raster export options. If that doesn't solve it, increase resolution to something like double, and then shrink the image to the final size.

          Thanks for your reply.
          It's a render indeed, not a printscreen.
          Antialisasing is active with a catmull-rom filter. There is the problem, this filter creates those outlines around my model.
          If i choose another AA-filter, it gets to blurry. I really like the catmull-rom filter.
          Is there a way to get rid off the black outlines and still use the catmull-rom filter?

          I tried to shrink the image (to 50% and 25%), but you can still see the black outlines very good.

          Maybe there is an another trick?

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          • J Offline
            JQL
            last edited by 3 Jun 2015, 08:57

            LOL, I'm sorry I hadn't noticed this was in Vray forum...

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            • F Offline
              fvweert
              last edited by 3 Jun 2015, 17:24

              @jql said:

              LOL, I'm sorry I hadn't noticed this was in Vray forum...

              😛

              Haha, somebody knows a fix?

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              • F Offline
                fvweert
                last edited by 3 Jun 2015, 17:37

                I fixed it!!!!

                next to the 'reflection/refraction (background)' option, i've set the number to 1 (instead of 10).

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