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])
*The figure is the real output on a synthetic 128×128 input. Left: input, right: output (a non-image return value is shown as the value itself).*
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.
The program below has been verified to run (same input as the figure). In Studio's help this block becomes buttons that load and run it on the spot.
tac_pressure_proxy 0.50 0.50
▸ Load this pipeline · Load & run
• 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.