WFGY/ProblemMap/GlobalFixMap/Multimodal_LongContext/phantom-visuals.md

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Phantom Visuals — Multimodal Long Context

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When models hallucinate visual regions that do not exist (ghost bounding boxes, fake diagrams, or nonexistent objects), fusion collapses.
This page explains how to detect and prevent phantom visual generation in long multimodal sessions.


What this page is

  • Guardrails for hallucinated visuals in textimage/video pipelines.
  • Minimal schema to force grounding in actual frames or regions.
  • Acceptance targets to measure and verify stability.

When to use

  • The model cites an object not present in any frame.
  • Generated captions describe phantom regions or colors.
  • Bounding box coordinates are out of range or undefined.
  • Answers flip between different “visual evidence” each run.
  • Diagrams or charts are invented that were never uploaded.

Open these first


Common failure patterns

  • Phantom bounding boxes: cites region_id that was never stamped.
  • Invented objects: describes entities absent from ground-truth frames.
  • Ghost captions: text generated about visual details that do not exist.
  • Out-of-bounds references: coordinates or time stamps not in the source.
  • Visual-plan instability: repeated runs yield different “phantom” evidence.

Fix in 60 seconds

  1. Require stamped IDs

    • Every visual mention must cite {frame_id, region_id} from input.
    • Forbid free-text region descriptions without anchors.
  2. Cross-check ΔS

    • ΔS(text, vision) must be ≤ 0.45.
    • If ΔS ≥ 0.60 and no matching anchor exists, stop and reject the claim.
  3. Schema lock

    • Use {object | attribute | anchor_id} schema.
    • Missing anchors = invalid response.
  4. Clamp hallucination variance

    • Apply BBAM when λ flips divergent across runs.
    • If phantom persists, bridge with BBCR and force re-alignment.
  5. Trace visual contract

    • Log all cited frame_id, region_id.
    • Require reproducibility across three paraphrases.

Copy-paste prompt

You have TXT OS and the WFGY Problem Map.

Task: Detect and block phantom visual hallucinations.

Protocol:
1. Require every visual claim to cite {frame_id, region_id}.
2. If an object is described without anchor, stop and return “phantom visual”.
3. Report ΔS(text, vision) and λ across 3 paraphrases.
4. Apply BBAM for variance clamp. If collapse persists, insert BBCR bridge.
5. Return: {Anchor Table, ΔS log, λ states, Final Answer}.

Acceptance targets

  • ΔS(text, vision) ≤ 0.45
  • λ remains convergent across three paraphrases
  • No phantom bounding boxes or invented regions
  • Reproducible evidence across seeds and paraphrases
  • Trace log covers all cited regions

🔗 Quick-Start Downloads (60 sec)

Tool Link 3-Step Setup
WFGY 1.0 PDF Engine Paper 1 Download · 2 Upload to your LLM · 3 Ask “Answer using WFGY + ”
TXT OS (plain-text OS) TXTOS.txt 1 Download · 2 Paste into any LLM chat · 3 Type “hello world” — OS boots instantly

Explore More

Module Description Link
WFGY Core Canonical framework entry point View
Problem Map Diagnostic map and navigation hub View
Tension Universe Experiments MVP experiment field View
Recognition Where WFGY is referenced or adopted View
AI Guide Anti-hallucination reading protocol for tools View

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