Pith Number

pith:YD2UZBFT

pith:2026:YD2UZBFTSG7XCKP6WAV5FTZLDR

not attested not anchored not stored refs pending

MetaTele: Compact Refractive Metasurface Computational Telephoto Camera

Abhiram Gnanasambandam, Dilshan Godaliyadda, Hamid R. Sheikh, Harshana Weligampola, Qi Guo, Stanley H. Chan, Yuanrui Chen

MetaTele achieves a telephoto ratio of 0.44 with 13 mm total track length by decoupling narrow-band structure capture from aberrated broadband color and fusing them with a one-step diffusion model.

arxiv:2604.07614 v2 · 2026-04-08 · eess.IV

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\usepackage{pith}
\pithnumber{YD2UZBFTSG7XCKP6WAV5FTZLDR}

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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

We demonstrate a MetaTele prototype, achieving an unprecedented telephoto ratio of 0.44 with a TTL of just 13 mm for RGB imaging.

C2weakest assumption

That the custom one-step diffusion model can reliably fuse the narrow-band structure image with the aberrated broadband color cue to produce high-quality, artifact-free RGB output across varied scenes and lighting conditions.

C3one line summary

A metasurface-refractive optics plus diffusion-model co-design achieves 0.44 telephoto ratio and 13 mm total track length for RGB imaging in a compact prototype.

Receipt and verification

First computed	2026-05-27T02:05:19.393014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0f54c84b391bf7129feb02bd2cf2b1c6f5310a1aded234224d3998ea6957a36

Aliases

arxiv: 2604.07614 · arxiv_version: 2604.07614v2 · doi: 10.48550/arxiv.2604.07614 · pith_short_12: YD2UZBFTSG7X · pith_short_16: YD2UZBFTSG7XCKP6 · pith_short_8: YD2UZBFT

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/YD2UZBFTSG7XCKP6WAV5FTZLDR \
  | 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: c0f54c84b391bf7129feb02bd2cf2b1c6f5310a1aded234224d3998ea6957a36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe162decdbcfb5c2e7c22b1da259d9d6cb9ad55b5832aae662e58c3c665d4454",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2026-04-08T21:33:28Z",
    "title_canon_sha256": "ca073e964a7e728b4e0e5f39565a80beaf73036ff6c4463caaeb56217c804849"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.07614",
    "kind": "arxiv",
    "version": 2
  }
}