Pith Number

pith:TTXTPDR7

pith:2026:TTXTPDR7QKMX42EJ2RFKP4VTRC

not attested not anchored not stored refs pending

TopoHR: Hierarchical Centerline Representation for Cyclic Topology Reasoning in Driving Scenes with Point-to-Instance Relations

Bo Song, Erkang Cheng, Haibin Ling, Yifeng Bai, Zhirong Chen

Cyclic interaction between centerline detection and topology reasoning, driven by hierarchical point-to-instance features, improves road layout understanding in driving scenes.

arxiv:2604.24119 v2 · 2026-04-27 · cs.CV

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\pithnumber{TTXTPDR7QKMX42EJ2RFKP4VTRC}

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Record completeness

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

On the OpenLane-V2 benchmark, TopoHR refreshes state-of-the-art performance with significant improvements. Notably, compared with previous best results, TopoHR achieves +3.8 in DET_l, +5.4 in TOP_ll on subset_A and +11.0 in DET_l, +7.9 in TOP_ll on subset_B, validating the effectiveness of the proposed components.

C2weakest assumption

That the cyclic interaction between centerline detection and topology reasoning, enabled by the hierarchical point-to-instance features, is the primary driver of the reported benchmark gains rather than other unstated factors such as training details or dataset specifics.

C3one line summary

TopoHR proposes a hierarchical centerline representation and topology reasoning module with point-to-instance relations and cyclic interactions, achieving new state-of-the-art results on the OpenLane-V2 benchmark for autonomous driving.

Receipt and verification

First computed	2026-06-11T01:09:36.427623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9cef378e3f82997e6889d44aa7f2b388bdcf458ccfb720dca030c2e7cda248d8

Aliases

arxiv: 2604.24119 · arxiv_version: 2604.24119v2 · doi: 10.48550/arxiv.2604.24119 · pith_short_12: TTXTPDR7QKMX · pith_short_16: TTXTPDR7QKMX42EJ · pith_short_8: TTXTPDR7

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TTXTPDR7QKMX42EJ2RFKP4VTRC \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 9cef378e3f82997e6889d44aa7f2b388bdcf458ccfb720dca030c2e7cda248d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd22715ca9357cbec2950234ea8632cc981b0e4e46b1e9fd4785a98c6b74f6be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-04-27T07:13:33Z",
    "title_canon_sha256": "b2a4f616bae25d74bf34ca57fb2a4b6947a831c400e5e0b374355ea21ba51166"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.24119",
    "kind": "arxiv",
    "version": 2
  }
}