fly_eye_merge — FLYVISION `selfmotion` op

• 数据种类:table × table → table

• 调用: import fullseye as fs; fs.ledger.fly_eye_merge(lattice_a, lattice_b, *more)(要直接调用实现,import flyvision; flyvision.fly_eye_merge(lattice_a, lattice_b, *more);从台账取用则 opsflyvision.get("fly_eye_merge"))

用法

> 该算子的说明尚无译文,以下照原文给出。

Several lattices seen as one wide eye — the viewing directions of all of them.

:func:fly_hex_resample needs a lattice that fits inside one pinhole image,

which caps a single patch at well under a hemisphere. A fly is not so

limited: its two compound eyes together see almost the whole sphere, and the

wide-field cells that read self-motion out of them integrate over all of it.

This op is that integration made explicit — render each patch through its own

camera, run the pathway on each, then merge the *geometry* so that one

least-squares fit sees every ommatidium at once.

It matters more than it looks. In a naturalistic 1/f scene the response of a

correlation detector is contrast-weighted, so a narrow patch is at the mercy

of whichever few large features happen to be in it; widening the field is

what turns the estimate from a guess into a measurement (the PoC measures how

much).

lattice_a / lattice_b / *more: two or more :func:fly_hex_lattice results. They must

share the inter-ommatidial angle and the geometry (different spacings are

different eyes and the merged field would silently mix two sampling scales),

and no two ommatidia may look in exactly the same direction (merging a patch

with itself would double its vote without saying so).

Returns a lattice dict with the same keys plus `"eye"`, the index of the

patch each ommatidium came from, in input order. The merged lattice is what

:func:fly_matched_filter and :func:fly_egomotion_from_flow take;

:func:fly_hex_resample and :func:fly_flow_from_directions stay per patch,

because a pinhole image and a hexagonal neighbourhood are both local.

Raises `ValueError`: a malformed lattice (including a sequence handed

in where a lattice was expected), a mismatched `dphi_rad or geometry`,

and a direction that appears twice.

详细使用指南

• fly_vision 族使用指南

参考(示例数据・文献)

• 示例数据目录(下载 URL / 许可证) —— 2-D 用 skimage.data(BSD/公有领域)加合成图,3-D 给出真实数据源(Stanford/PDS 等)的下载 URL。

• 算子来历与参考文献 —— 该算子族所依据的研究/方法出处。

• 算法的正典(作者・年份)与用途见上面的族使用指南。

可运行的示例(实际调用该算子并已验证的样例)

• poc_fly_optomotor_steering — py -3.11 examples/poc_fly_optomotor_steering.py

类型可衔接的下一个算子(可接受 `table` 作为输入)

fly_t4t5_field · fly_flow_from_directions · fly_matched_filter · fly_egomotion_from_flow · fly_hex_resample · fly_hs_readout

同类别(`selfmotion`)

fly_matched_filter · fly_egomotion_from_flow

*Provenance: flyvision.py — FLYVISION 算子登记表。本条目由 tools/opdocs.py md 自动生成(请勿手工编辑)。*

fly_eye_merge — FLYVISION selfmotion op

用法