tactile op• データ種: image → image
• 呼び出し: fullseye.apply(img, "tac_height_from_shading", a=0.5, b=0.5) (2-D は 1 画像 + 2 スカラつまみ a,b∈[0,1] のモデル)
Height/relief map by Poisson integration of the shading gradients -- the
integration stage of GelSight depth reconstruction (and of photometric
stereo): the image gradients are read as surface slopes `p = gain*gx`,
`q = gain*gy and the Poisson equation lap(h) = div(p,q)` is solved
spectrally, `h_hat = div_hat / lap_hat` with the discrete Laplacian symbol
`2cos(2*pi*u/W)+2cos(2*pi*v/H)-4` and the (undetermined) DC mode pinned to
zero. `a = gradient gain (0.25..4.25x), b` = pre-smoothing sigma of the
gradient field (0..3). Output is min-max normalised to [0,1] and refit to
HxW; a constant frame integrates to a flat (all-zero) relief.
• サンプルデータ カタログ(DL URL / ライセンス) — 2-D は skimage.data(BSD/public)+ 合成、3-D は実データ源(Stanford/PDS 等)の DL URL。
• 演算子の来歴・参考文献 — この op 族の元になった研究/手法の出典。
• sim2real_and_alife — py -3.11 examples/sim2real_and_alife.py
image を入力に取れる)identity · gaussian · mean_box · bilateral · unsharp · median · min_filter · max_filter
tactile)tac_contact_mask · tac_surface_normal · tac_pressure_proxy · tac_shear_field
*Provenance: ops.py — 2D operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.