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Developer2006
#C##.NET 2.0#GDI+#WinForms#Image Processing#Sub‑pixel rendering

StereoRastr — Lenticular 3D Image Generator

C# desktop utility for making 3D images that change with viewing angle. Image interlacing, sub‑pixel rendering, calibration for print lenses.

3D Without Glasses (2006)

Remember postcards that “come alive” when tilted? I built a tool to prepare such images for print: interlace frames, calibrate for the lens sheet — no magic, just math and patience.

Business Insights

  • Faster prep for lenticular prints lowers campaign costs for agencies.
  • Calibration accuracy → less waste and reprints.

Lenticular is plastic with micro‑lenses. If you interleave strips of multiple images just right, different angles show different frames: flip, animation, or faux‑3D.

What Matters

  • Sub‑pixel rendering to align edges to lens ridges.
  • Calibration for any lens (LPI) and any printer (DPI).
  • “Designer tool”: load frames → adjust → export TIFF.

Outcomes

  • Print shops stopped guessing LPIs.
  • Agencies got “wow” without expensive software.
  • I got first serious .NET experience and respect for pixels.

Lessons

  • If users want results, they’ll forgive any UI — but better not test that.
  • In the real world, 0.3 mm is not “minor,” it’s “nice or moiré.”