Pith Number

pith:WC7PR23K

pith:2016:WC7PR23K3FMAOEX3SADAWMHPKL

not attested not anchored not stored refs pending

Local Histogram Matching for Efficient Optical Flow Computation Applied to Velocity Estimation on Pocket Drones

Bart Remes, Christophe de Wagter, Guido de Croon, Hilbert Kappen, Karl Tuyls, Kimberly McGuire

arxiv:1603.07644 v3 · 2016-03-24 · cs.RO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WC7PR23K3FMAOEX3SADAWMHPKL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

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.

Receipt and verification

First computed	2026-05-18T00:48:42.933196Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0bef8eb6ad9580712fb90060b30ef52ec1968044d33161891c9c57b6e007189

Aliases

arxiv: 1603.07644 · arxiv_version: 1603.07644v3 · doi: 10.48550/arxiv.1603.07644 · pith_short_12: WC7PR23K3FMA · pith_short_16: WC7PR23K3FMAOEX3 · pith_short_8: WC7PR23K

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/WC7PR23K3FMAOEX3SADAWMHPKL \
  | 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: b0bef8eb6ad9580712fb90060b30ef52ec1968044d33161891c9c57b6e007189

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8be2d4d71b928a6d78dee67f98f7dd7c848b398905808e2051184927b353713b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2016-03-24T16:36:41Z",
    "title_canon_sha256": "468b3f58341a96683041d3ec84b2a7dc13acf65c972a8d86fe81dc7aa0bd17e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.07644",
    "kind": "arxiv",
    "version": 3
  }
}