depth op• Data kinds: none → table (an op determined by its arguments alone — it takes no image or data input)
• Call: import fullseye as fs; fs.ledger.lf_plenoptic_design(focal_mm=50.0, f_number=8.0, object_mm=300.0, pixel_um=3.45, mla_pitch_um=27.6, sensor_px=(2048, 2448), *, subpixel_px=0.1) (to call the implementation directly, import lightfield; lightfield.lf_plenoptic_design(focal_mm=50.0, f_number=8.0, object_mm=300.0, pixel_um=3.45, mla_pitch_um=27.6, sensor_px=(2048, 2448), *, subpixel_px=0.1); from the registry, opslightfield.get("lf_plenoptic_design"))
Size a plenoptic camera: what angular/spatial resolution and depth range you buy.
The plenoptic trade in one table. A microlens spanning mla_pitch_um / pixel_um pixels turns that many pixels into that many *directions*, so the sensor's pixel count is unchanged but the image is U*V times smaller and carries U*V viewpoints. This operator composes optics rather than re-deriving it: optics.thin_lens places the image, and optics.depth_of_field is called twice — once with the pixel pitch as the circle of confusion (the depth of field of a single refocused slice) and once with the *microlens* pitch (the range over which refocusing can still recover a sharp image). Their ratio is the refocusing gain, and it comes out at the angular resolution, which is the textbook result — measured 2026-09-01 at f = 50 mm, N = 8, s_o = 300 mm: an 8x8 angular grid gives refocus_gain = 8.0038, 10x10 gives 10.0075 and 6x6 gives 6.0016.
Returns a dict — angular_u / angular_v (whole pixels per microlens, from floor) · angular_exact (the unrounded ratio) and pitch_is_integer (whether the MLA pitch is a whole number of pixels; it usually is not, which is why real decoding needs sub-pixel calibration) · spatial_w / spatial_h (microlenses = sub-aperture image size) · n_views · resolution_loss (U*V) · image_mm / magnification / working_distance_mm from the thin lens · aperture_mm (f/N) · baseline_mm (viewpoint spacing across the pupil, aperture / (U - 1)) · focal_px_subaperture (focal length in units of the *microlens* pitch, the pixel of a sub-aperture image) · dof_pixel_mm / dof_refocus_mm and refocus_gain · and depth_precision_mm, the object-side distance change that moves the disparity by *subpixel_px* pixels (Z^2 * dp / (focal_px * baseline)) — the honest depth resolution at *object_mm*.
Raises ValueError: any non-positive or non-finite length, an mla_pitch_um smaller than two *pixel_um* (fewer than 2 directions is not a light field), a sensor smaller than one microlens, a non-positive *subpixel_px*, object_mm == focal_mm (propagated from optics.thin_lens: the object images at infinity), and an angular resolution of 1 in either axis, where the baseline would be a 0/0.
• lightfield_depth family guide
• 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.
• lightfield_depth — py -3.11 examples/lightfield_depth.py
• poc_compound_eye — py -3.11 examples/poc_compound_eye.py
table as input)—
depth)lf_depth_from_focus · lf_epi_slope · lf_disparity_to_depth · lf_all_in_focus
*Provenance: lightfield.py — LIGHTFIELD 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.