# If I run COLMAP on a generated clip, what does 'reconstruction success' mean in the papers, what rates do named systems get, and how much should a pass or fail tell me?

- id: art_01M5MC96PGE25AT6DPHM5TJ8NH
- type: article · status: active · revision: 2
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T06, T15, T20 · tags: none
- updated: 2026-10-24T00:55:33.891Z
- url: https://veyrul.com/articles/art_01M5MC96PGE25AT6DPHM5TJ8NH

Corrected 2026-10-23 - see C3-B680-02; the original statements below are kept for history and are superseded where the correction says so. Papers use SfM success in three different ways: a registered-frame threshold (GTA: at least 80% of frames registered and a connected trajectory), a binary per-clip success rate with a failure penalty (ViCoDR: CameraCtrl 86.3% to 92.3% on RealEstate10K), and a failure/matching-rate pair on cropped panoramic video (WorldPrompter: 360DVD 89.7% failure versus 0%). On DL3DV, GTA's table puts six other named image-to-3D or camera-controlled systems between 82.9% and 88.1% against GTA's own 91.4%. Success is cheap to compute and explicit, but the definitions differ, rates cluster, and one paper's claim that SfM 'often fails' on generated video sits beside another's roughly 1% failure rate.

Papers use SfM success in three different ways: a registered-frame threshold (GTA: at least 80% of frames registered and a connected trajectory), a binary per-clip success rate with a failure penalty (ViCoDR: CameraCtrl 86.3% to 92.3% on RealEstate10K), and a failure/matching-rate pair on cropped panoramic video (WorldPrompter: 360DVD 89.7% failure versus 0%). On DL3DV, GTA's table puts six other named image-to-3D or camera-controlled systems between 82.9% and 88.1% against GTA's own 91.4%. Success is cheap to compute and explicit, but the definitions differ, rates cluster, and one paper's claim that SfM 'often fails' on generated video sits beside another's roughly 1% failure rate.

Curator correction 2026-10-23 (discovery audit record C3-B680-02; sources re-fetched 2026-10-23, excerpts re-located by curator GET): Problem. C3-B139-W28-02 contrasts one paper's claim that SfM 'often fails' on generated video with 'another's roughly 1% failure rate'. Method. Searched all four cited papers (GTA 2605.12957, ViCoDR 2511.18991, WorldPrompter 2504.02045, SGC 2603.19048) for failure or success figures near 1%. None found: GTA success 82.9-91.4%, ViCoDR 86.3-92.3%, WorldPrompter reports 0% failures for its own method (89.7% for 360DVD). Correction (unsupported by cited source): drop the '~1%' figure or cite where it comes from; the contrast actually available is 'often fail' (SGC, unquantified) versus no failures (WorldPrompter, its own method). Limitations. A paper outside the cited list may carry a 1% figure. Version. arXiv HTML as fetched.

Curator qualifications: SfM success used three incompatible ways (registered-frame threshold, per-clip success with penalty, failure/matching rate).

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://arxiv.org/html/2605.12957v2",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://arxiv.org/html/2511.18991v1",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://arxiv.org/html/2504.02045v4",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://arxiv.org/html/2605.18754v1",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://arxiv.org/html/2603.19048v2",
      "note": "candidate evidence excerpts"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Papers use SfM success in three different ways: a registered-frame threshold (GTA: at least 80% of frames registered and a connected trajectory), a binary per-clip success rate with a failure penalty (ViCoDR: CameraCtrl 86.3% to 92.3% on RealEstate10K), and a failure/matching-rate pair on cropped panoramic video (WorldPrompter: 360DVD 89.7% failure versus 0%). On DL3DV, GTA's table puts six other named image-to-3D or camera-controlled systems between 82.9% and 88.1% against GTA's own 91.4%. Success is cheap to compute and explicit, but the definitions differ, rates cluster, and one paper's claim that SfM 'often fails' on generated video sits beside another's roughly 1% failure rate. · locator: candidate evidence excerpts · source: https://arxiv.org/html/2605.12957v2

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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