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?

  • @[email protected]
    8•5 days ago

    i believe you need distance. but you’ll loose resolution. the lens distortion will be way less fish-eye’e if you take the picture from meters away instead of centimeters. photo software like darktable also has lens correction for lots of camera-lenses. but not for smartphone lenses i believe. 🤔 not sure though.