Pith Number

pith:CPHCQAV4

pith:2017:CPHCQAV4YREKM65U7UXYA36KQC

not attested not anchored not stored refs pending

Local Activity-tuned Image Filtering for Noise Removal and Image Smoothing

Anhong Wang, Huihui Bai, Jie Liang, Lijun Zhao, Lili Meng, Yao Zhao

arxiv:1707.02637 v4 · 2017-07-09 · 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{CPHCQAV4YREKM65U7UXYA36KQC}

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	2026-05-18T00:30:16.642694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13ce2802bcc448a67bb4fd2f806fca80ab72d8d678cc6424414db0e4d2731fbe

Aliases

arxiv: 1707.02637 · arxiv_version: 1707.02637v4 · doi: 10.48550/arxiv.1707.02637 · pith_short_12: CPHCQAV4YREK · pith_short_16: CPHCQAV4YREKM65U · pith_short_8: CPHCQAV4

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/CPHCQAV4YREKM65U7UXYA36KQC \
  | 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: 13ce2802bcc448a67bb4fd2f806fca80ab72d8d678cc6424414db0e4d2731fbe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e81777a76aa0b5e23585ae61f0778dfceadcf4ea7aaf1d440f334e8fcf43f0d9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2017-07-09T21:07:05Z",
    "title_canon_sha256": "1f47da17dcfa36b4848c5abd9f543eeee0636d40e552f81034f45dbea2c7408e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.02637",
    "kind": "arxiv",
    "version": 4
  }
}