tactile op• Data kinds: image → image
• Call: fullseye.apply(img, "tac_pressure_proxy", a=0.5, b=0.5) (the 2-D model is one image plus two scalar knobs a,b∈[0,1])
Contact-pressure proxy map: the rectified deviation from the pseudo-reference background `dev = |v - G_sigma(v)| is gated to the high-deviation (contact) area -- a relative gate at 0.15 * max(dev) plus an absolute floor of 0.005 -- amplified by the sensitivity gain and Gaussian-smoothed, which is the standard "indentation depth is monotone in normal force" surrogate used when a tactile pad carries no force sensor. a = sensitivity (gain 1..10x), b` = smoothing radius (sigma 0.5..4.5). Output clipped to [0,1], HxW; a flat frame yields an all-zero pressure map (no contact, no force).
• 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.
• sim2real_and_alife — py -3.11 examples/sim2real_and_alife.py
image as input)identity · gaussian · mean_box · bilateral · unsharp · median · min_filter · max_filter
tactile)tac_contact_mask · tac_height_from_shading · tac_surface_normal · tac_shear_field
*Provenance: ops.py — 2D 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.