Pith Number

pith:VCI6JTRL

pith:2018:VCI6JTRLEKPTZSKV54OUXWWXNN

not attested not anchored not stored refs pending

Quality assessment metrics for edge detection and edge-aware filtering: A tutorial review

Alex Pappachen James, Diana Sadykova

arxiv:1801.00454 v1 · 2018-01-01 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VCI6JTRLEKPTZSKV54OUXWWXNN}

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	2026-05-18T00:26:58.137462Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a891e4ce2b229f3cc955ef1d4bdad76b4bd655f3331b5d9ac1a963e1fdb4c3ed

Aliases

arxiv: 1801.00454 · arxiv_version: 1801.00454v1 · doi: 10.48550/arxiv.1801.00454 · pith_short_12: VCI6JTRLEKPT · pith_short_16: VCI6JTRLEKPTZSKV · pith_short_8: VCI6JTRL

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/VCI6JTRLEKPTZSKV54OUXWWXNN \
  | 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: a891e4ce2b229f3cc955ef1d4bdad76b4bd655f3331b5d9ac1a963e1fdb4c3ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3168f2179f3f4099878ff441feed464734230fb581a946101a07458ec0834ef6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-01-01T15:01:15Z",
    "title_canon_sha256": "5ad9bb1494297a526ea21fc2775dbbd6a6572d8c0e4df40ca5ba6af4da375496"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.00454",
    "kind": "arxiv",
    "version": 1
  }
}