Pith Number

pith:BZ2BB7LA

pith:2014:BZ2BB7LAG5MCEK7NKSZOMP4JDJ

not attested not anchored not stored refs pending

High Frequency Content based Stimulus for Perceptual Sharpness Assessment in Natural Images

Ashirbani Saha, Q. M. Jonathan Wu

arxiv:1412.5490 v2 · 2014-12-17 · 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{BZ2BB7LAG5MCEK7NKSZOMP4JDJ}

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	2026-05-18T02:31:01.858031Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e7410fd603758222bed54b2e63f891a62e7b488b44b9c49e42aea882a754bc9

Aliases

arxiv: 1412.5490 · arxiv_version: 1412.5490v2 · doi: 10.48550/arxiv.1412.5490 · pith_short_12: BZ2BB7LAG5MC · pith_short_16: BZ2BB7LAG5MCEK7N · pith_short_8: BZ2BB7LA

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/BZ2BB7LAG5MCEK7NKSZOMP4JDJ \
  | 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: 0e7410fd603758222bed54b2e63f891a62e7b488b44b9c49e42aea882a754bc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "937b125ef0cb9308a45dd4c9efcfa3f2030659918458b209693fa5de5a0835fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2014-12-17T17:28:53Z",
    "title_canon_sha256": "2775d6e5428e7ccf6820c9bc1280717518f934f9fc6f5dfce5820accab2497a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.5490",
    "kind": "arxiv",
    "version": 2
  }
}