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.
Table of Contents
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.”
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