sketchucation logo sketchucation
    • Login
    πŸ€‘ SketchPlus 1.3 | 44 Tools for $15 until June 20th Buy Now

    How to vectorize lines from JPEG image

    Scheduled Pinned Locked Moved Newbie Forum
    sketchup
    9 Posts 3 Posters 2.7k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • T Offline
      tuningflex
      last edited by

      Hi

      I hope you will understand whats my problem, even if my English is not very good.

      I made an image-scan from a map. There are contour-lines from a terrain to see. The Image is a high resolutuion jpeg image. I have to trace all visible lines. I want to vectorize them on that way.

      But there are so many lines that will last forever.

      Is there any way in SU, to detect these lines? The lines from the image are pixelated. How can SU know the lines?
      Or is there a way with another program? Then i coukd import these lines again. I only want these 2d Lines in 3D CAD.

      What I want, reminds me of the magic wand in Photoshop.

      Thank you very much πŸ˜‰


      I need to trace all visible lines. I can make them Black and white in High resolution. So it will work finde in Photoshop.
But its still pixelated, I need it vectorized like the lines in SU.

      1 Reply Last reply Reply Quote 0
      • GaieusG Offline
        Gaieus
        last edited by

        Hi TF,

        SketchUp cannot do raster (or bitmap) to vector conversion (this is the terminus technicus you need to search for). There are a bunch of software that can, there is one that I have (sort of mixed) experiences with; WinTopo (come in a free and in a pro version).

        Note that in any case, you will need some manual cleanup. Also, if the vector-work is too detailed and complex, it may slow down SU considerably. There is a free plugin by Google: "SimplifyCountours" (scroll to the bottom of the page) which will do what it says and the resulting topo won't be noticeably worse.

        Gai...

        1 Reply Last reply Reply Quote 0
        • pilouP Offline
          pilou
          last edited by

          Autotracer.org free 😎

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

          1 Reply Last reply Reply Quote 0
          • T Offline
            tuningflex
            last edited by

            wow, so fast reply πŸŽ‰
            Very nice Forum.

            Thx fpr Simplify contours. I`m sure that I will need it. Theres a lot to do.

            And I tested the online-vectorizer with miy uploaded image. It was really succesfully.
            There are some little mistakes but it doesnt matter.

            No I think about to use a free program which will do the same. A program like "inkscape" or anythin else.
            But I dont found out how to use ist. But I will.

            Thank you again

            1 Reply Last reply Reply Quote 0
            • GaieusG Offline
              Gaieus
              last edited by

              Where is it, Pilou?

              Gai...

              1 Reply Last reply Reply Quote 0
              • pilouP Offline
                pilou
                last edited by

                Yes Inkscape has a vectorizer inside but you must learn the prog πŸ˜‰

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

                1 Reply Last reply Reply Quote 0
                • GaieusG Offline
                  Gaieus
                  last edited by

                  Thanks Pilou. Here is a "translated" version.

                  And the important part (which is valid for all such tools) is:

                  "Keep in mind that the purpose of vectorization with this tool is not to produce an exact duplication of the original image, or to produce any results finalized. No automatic vectorization tool can not produce it. You get a set of curves that you can use as resources in your drawing."

                  Gai...

                  1 Reply Last reply Reply Quote 0
                  • pilouP Offline
                    pilou
                    last edited by

                    here the French Tut of Vectorisation's tool inside Inkscape πŸ˜‰
                    Else link for Inkscape πŸ˜‰

                    Load an Image
                    then SHIFT + ALT + B πŸ’š (On my old version)

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

                    1 Reply Last reply Reply Quote 0
                    • T Offline
                      tuningflex
                      last edited by

                      @unknownuser said:

                      here the French Tut of Vectorisation's tool inside Inkscape πŸ˜‰
                      Else link for Inkscape πŸ˜‰

                      Load an Image
                      then SHIFT + ALT + B πŸ’š (On my old version)

                      you are right. Thats it! Now I have Lines they look much better.
                      But it are still 2 parallel Lines. Why? Because a raster/pixel- Line has a thickness about some pixels.
                      So Inkscape make 2 outline. But I need a middleline. May I feel it will come and work fine. β˜€

                      See my pictures please
                      vectorize.jpg

                      1 Reply Last reply Reply Quote 0
                      • 1 / 1
                      • First post
                        Last post
                      Buy SketchPlus
                      Buy SUbD
                      Buy WrapR
                      Buy eBook
                      Buy Modelur
                      Buy Vertex Tools
                      Buy SketchCuisine
                      Buy FormFonts

                      Advertisement