cross-posted from @[email protected]: https://lemmy.world/post/23787115

I’ve managed to do reverse engineering of circuit boards using GIMP and rough alignment of layers using images like the one pictured. I want to use images to reverse engineer parts in CAD, but the minor lens distortion of a camera on a phone at ~20cm high on top of a stack of objects to keep it eyeballed flat is not enough. The result is off in multiple planes. There are minor errors in my curves in the transparent CAD part pictured, but the hole pattern is correct. The picture has been calibrated to 20mm against the ruler. Any suggestions on how to make this usable for replicating the ellipse that crosses the holes ±0.05mm?

  • Rentlar
    1·
    5 days ago

    I think the software you were thinking of is 3D zephyr.

    The best FOSS one imo is Meshroom. One tip when using that is to stop the process after the Structure from Motion process, add a bounding box around the main subject area so that there is less background modeled at the end.

    • CrayonRosary@lemmy.worldEnglish
      2·
      5 days ago

      Yes, that was the one. I tried Meshroom as well, at a later date. I forget if it was a success or not.

      Good tip, though! I have often had to clean up meshes after the fact using something like Meshmixer. (I am in no way skilled in Blender.)