lens_shading_correct — GFX2D isp op

• Data kinds: image2d × image2d → image2d

• Call: import fullseye as fs; fs.ledger.lens_shading_correct(raw, gain) (to call the implementation directly, import gfx2d; gfx2d.lens_shading_correct(raw, gain); from the registry, opsgfx2d.get("lens_shading_correct"))

Usage

Multiply a frame by a lens-shading gain map and clip to `[0, 1]`. *raw* and *gain* must have the same shape; the gain must be finite and > 0.

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• raw_to_display_isp — py -3.11 examples/raw_to_display_isp.py

Ops the type connects to (they accept image2d as input)

shadow_cast_2d · dither · raw_black_level · raw_dead_pixel_mask · raw_dead_pixel_correct · lens_shading_gain · raw_apply_gains · raw_demosaic_bilinear

Same category (isp)

raw_black_level · raw_dead_pixel_mask · raw_dead_pixel_correct · lens_shading_gain · awb_gains · rgb_apply_gains · raw_apply_gains · raw_demosaic_bilinear

*Provenance: gfx2d.py — GFX2D operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.