integrate op• 데이터 종류: matrix × table → measurement
• 호출: import fullseye as fs; fs.ledger.fly_hs_readout(responses, lattice, n_pref, el_min_deg=0.0, rectify=True)(구현을 직접 호출하려면 import flyvision; flyvision.fly_hs_readout(responses, lattice, n_pref, el_min_deg=0.0, rectify=True), 원장에서 가져오려면 opsflyvision.get("fly_hs_readout"))
> 이 연산자의 설명은 아직 번역이 없습니다. 원문을 그대로 싣습니다.
Horizontal-system wide-field readout: opponent sum over the upper field.
Given a stack of motion-detector responses over the ommatidia — the first *n_pref* rows the preferred-direction type, the rest the anti-preferred — the opponent readout over the ommatidia above the horizon is::
(a - b) / (a + b + 1e-6)
where a and b are the (optionally rectified) totals of the preferred and anti-preferred responses over the columns with el > el_min_deg.
Only the upper visual field is used because the ground flow of forward motion is 1/distance while the rotational flow it must be separated from is distance-independent: an eye 1.2 mm above the floor sees floor flow of 330-1000 deg/s, above the ~200 deg/s bandwidth of the motion detectors, so the lower field carries speed the correlator cannot read and is excluded.
responses: a (k, n) matrix of responses, n matching the lattice.
lattice: the dict returned by fly_hex_lattice.
n_pref: how many leading rows are the preferred-direction type
(1 <= n_pref < k).
el_min_deg: the horizon; only ommatidia above it contribute.
rectify: half-wave rectify (clip negatives to 0) before summing.
Returns the opponent ratio as a float in [-1, 1].
Ground truth: with the preferred rows active only in the upper field and the anti-preferred rows silent, the readout is +1 (and the sign and value match the hand calculation); an el_min_deg above every ommatidium raises (pinned in the tests).
Raises ValueError: a non-2-D / empty / non-finite *responses*, a *responses* over the element cap, a *lattice* that is not a fly_hex_lattice result, a column count not matching the lattice, a *n_pref* outside [1, k-1], a non-real *el_min_deg*, a non-bool *rectify*, and an *el_min_deg* above every ommatidium (no upper field to read).
• 샘플 데이터 카탈로그(DL URL / 라이선스) —— 2-D 는 skimage.data(BSD/public)+ 합성, 3-D 는 실데이터 소스(Stanford/PDS 등)의 DL URL.
• 연산자의 내력·참고문헌 —— 이 연산자 족의 바탕이 된 연구/기법의 출처.
• 알고리즘의 정전(저자·연도)과 용도는 위의 패밀리 사용 가이드에 적혀 있습니다.
• poc_fly_vision — py -3.11 examples/poc_fly_vision.py
measurement 를 입력으로 받는 것)—
integrate)—
*Provenance: flyvision.py — FLYVISION 연산자 레지스트리. 이 op 노트는 tools/opdocs.py md 가 자동 생성합니다(직접 편집하지 마세요).*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.