research-document DFR-1D67A8549E6B
Frontier analysis — Color-Difference Metric Validation — Itten Color Contrasts / Experiment Report / EX ITTEN 008 Color Metric Validation
Frontier analysis — Color-Difference Metric Validation — Itten Color Contrasts / Experiment Report / EX ITTEN 008 Color Metric Validation
Knowledge boundary
- Source: content/projects/itten-color-contrasts/experiment-report/EX-ITTEN-008-color-metric-validation.md
- Status: computational-stress-test-complete-ground-truth-study-pending
- Discipline: Measurement
- Confidence: not explicitly stated
- Primary objective: Which metric predicts task-specific discrimination across modern wide-gamut and HDR displays? A universal-metric claim fails if rankings or calibration vary materially by regime, task, observer, or device.
- Primary claims/evidence: Rank stability after the mild compression was .9990 for Lab and .9987 for Oklab. Cross-metric rank correlation was only .7824 . Correlation with luminance difference was .3675 for Lab and .7417 for Oklab in this generated corpus. The stress transform was too mild to separate within-metric robustness, but the cross-metric disagreement justifies empirical comparison. There is no perceptual ground truth here, and ΔE00, CAM16-UCS, Jzazbz, and HDR viewing conditions remain to be implemented.
- Methodology: Rank stability after the mild compression was .9990 for Lab and .9987 for Oklab. Cross-metric rank correlation was only .7824 . Correlation with luminance difference was .3675 for Lab and .7417 for Oklab in this generated corpus. The stress transform was too mild to separate within-metric robustness, but the cross-metric disagreement justifies empirical comparison. There is no perceptual ground truth here, and ΔE00, CAM16-UCS, Jzazbz, and HDR viewing conditions remain to be implemented.
- Limitations/known uncertainties: Question and falsifier: Which metric predicts task-specific discrimination across modern wide-gamut and HDR displays? A universal-metric claim fails if rankings or calibration vary materially by regime, task, observer, or device.
Five highest-value opportunities
| Rank | Record | Category | Frontier score |
|---|---|---|---|
| 1 | RFR-C872668D — Independent validation of the central claim | Validation | 493 |
| 2 | RFR-D474F814 — Calibrate construct and measurement validity | Measurement | 492 |
| 3 | RFR-B6678BF6 — Test cross-population and cross-context transfer | Accessibility | 492 |
| 4 | RFR-F1532442 — Map boundary conditions and failure regimes | Experimentation | 491 |
| 5 | RFR-AFDA3197 — Create a shared benchmark and decision threshold | Tooling | 392 |
Challenge and confidence decay
The source was challenged for construct validity, independent replication, boundary conditions, transfer, and comparative baselines. Confidence should decay when the source lacks a dated replication, when its technology or target population changes, or when later artifacts report contradictory findings. Revalidation is recommended before treating context-bound recommendations as universal.