Andrew FrahnandClaude Opus 5.5 00ea386f7f lensdb: lens distortion (poly3/poly5/PTLens), TCA (linear/poly3) and vignetting (pa) profiles, lensfun-format loader ...

Profiles are interpolated in focal length (vignetting also in aperture and
focus distance), scaled by crop factor, and converted by least squares to the
DNG WarpRectilinear / FixVignetteRadial polynomials the pipeline already
applies. The lensfun database (CC-BY-SA) is only read from a directory the
user supplies; nothing is bundled.

Sources: lensfun's published database format and lens calibration
documentation (no lensfun code read), PanoTools wiki (a, b, c distortion
model), DNG specification 1.6 (WarpRectilinear, FixVignetteRadial);
interpolation and fitting: own design.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

2026-10-11 19:30:18 +11:00

..

src

lensdb: lens distortion (poly3/poly5/PTLens), TCA (linear/poly3) and vignetting (pa) profiles, lensfun-format loader

2026-10-11 19:30:18 +11:00

Cargo.toml

lensdb: lens distortion (poly3/poly5/PTLens), TCA (linear/poly3) and vignetting (pa) profiles, lensfun-format loader

2026-10-11 19:30:18 +11:00