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    Organic modeling from photos?

    Scheduled Pinned Locked Moved Organic Modelling
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    • M Offline
      mac1
      last edited by

      Not my area but maybe worth a read ❓ $$ http://www.brainstormllc.com/ but has 30 trial

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      • B Offline
        bjornkn
        last edited by

        Photosketch looks nice, but it is advertised as a tool for creating lowpoly buildings inside SketchUp.
        Just like SU's own PhotoMatch, but with some automation, like undistorted photos, point clouds and higher precision?

        What dense point clouds does is using brute force, just like when using DEMs for generating landscapes. You really often need millions of polys to get a well defined model with crisp details/creases. It often ends up looking like a metaball/blob object.
        The beauty/power of PhotoScan is that it gives you the tools to model from photos fully controlled, and even make very dense automatically surface-fitted meshes like with point clouds, if that's what you want.
        And it can be used with any object, buildings, complex/concave organic forms, terrain - even with glass and shiny objects (which never works with point cloud mesh generators).
        I really doubt that any of the point cloud generators would have any chance to make an automatic model of something like this sharp edged, complicated/overlapping stainless steel sculpture?


        Volare.jpg

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        • pilouP Offline
          pilou
          last edited by

          @unknownuser said:

          I would like to have drone for taking aerial photos

          It's very easy with a kite! 😎

          From this page

          http://kap.online.fr/images/rig1.jpg

          http://kap.online.fr/images/rig2.jpg

          http://kap.online.fr/images/radio.jpg

          http://kap.online.fr/images/eclipse1.jpg

          Frenchy Pilou
          Is beautiful that please without concept!
          My Little site :)

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          • pilouP Offline
            pilou
            last edited by

            I have forgotten PhotoSculpt πŸ˜‰ (just 2 images ! 😎

            Frenchy Pilou
            Is beautiful that please without concept!
            My Little site :)

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            • B Offline
              bjornkn
              last edited by

              Kites (aka KAP) are nice if there's wind and you're not close to people/buildings/trees/power lines.
              Balloons, blimps, RC helis etc are nice if there are no wind, people/buildings etc
              Poles are nice if you want closeups from lower altitudes than possible with a kite, and works fine anywhere, regardless of wind, people/buildings etc.
              Besides, it requires a lot less rigging/setup and is a lot cheaper πŸ˜„
              A sturdy telescopic 7m pole may cost you $100?

              BTW, PhotoSculpt seems to have a very limited use for modeling, as it can only use 2 photos, and only makes a textured 3D relief.

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              • pilouP Offline
                pilou
                last edited by

                @unknownuser said:

                and only makes a textured 3D relief.

                Yes but as it's a 3d file, just make the turn of your object πŸ˜‰
                So maybe 12 photos and past the result πŸ˜‰

                Frenchy Pilou
                Is beautiful that please without concept!
                My Little site :)

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                • B Offline
                  bjornkn
                  last edited by

                  @unknownuser said:

                  @unknownuser said:

                  and only makes a textured 3D relief.

                  Yes but as it's a 3d file, just make the turn of your object πŸ˜‰
                  So maybe 12 photos and past the result πŸ˜‰

                  Let's see an example? πŸ˜‰

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                  • pilouP Offline
                    pilou
                    last edited by

                    I never try πŸ˜‰
                    just tricky fun images β˜€ (from Chaoscope)

                    http://forum.zbrush.fr/index.php?action=dlattach;topic=5689.0;attach=11516;image

                    But I believe that the autor (a French guy πŸ˜‰ should make a new version with this option πŸ˜‰

                    Frenchy Pilou
                    Is beautiful that please without concept!
                    My Little site :)

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                    • B Offline
                      bjornkn
                      last edited by

                      Well, they look pretty flat to me πŸ˜‰

                      I believe it doesn't really work with 3D coordinates, but more like 2 1/2D?
                      According to the info it makes a mesh with 1pixel = 1 face, and then adds depth info to that pixel. WHich means that a 6Mpx image will make a 6Mpoly mesh (or even 12 million triangles?)
                      Making 6 of those around the object (what about from above and below?) and trying to use SU to weld those 6x6 million faces (36 millions!) together won't be a fun job πŸ˜‰
                      It looks like it could work fine for making normal and bump maps though πŸ˜„

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                      • B Offline
                        bjornkn
                        last edited by

                        @unknownuser said:

                        No no, it's a real 3D file x,y,z, format export OBJ

                        Yes, but the x and z are probably in an evenly spaced grid, one per pixel, if there's one vertex (face) per pixel. Then you can't have more than one vertex per xz position (assuming y is the depth), and you will get no details at the top and bottom. That is just like a DEM, where you have a xy grid where each pixel/face will have an altitude z value, making it impossible to get overhangs etc, and with very little, and streaked, details on very steep walls/slopes.

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                        • pilouP Offline
                          pilou
                          last edited by

                          No no, it's a real 3D file x,y,z, format export OBJ
                          and you can increase, decrease decimate numbers of polys
                          as you want inside the prog before the export! πŸ€“


                          photosculpt.jpg

                          Frenchy Pilou
                          Is beautiful that please without concept!
                          My Little site :)

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                          • pilouP Offline
                            pilou
                            last edited by

                            You can obtain the details by some bump or displacement as you have
                            the new calculated texture ! πŸ˜‰
                            Here I have decreased twice from the maximum
                            photosculpt.jpg

                            Frenchy Pilou
                            Is beautiful that please without concept!
                            My Little site :)

                            1 Reply Last reply Reply Quote 0
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