---
title: "Deane B. Judd"
type: "entity"
entity_kind: "person"
status: "hub"
canonical_name: "Deane B. Judd"
aliases: ["D. B. Judd","Judd"]
first_seen: "2026-07-29T00:00:00.000Z"
writer_model: "claude-sonnet-5"
connects_to: ["Gaussian curvature (color space)","CIELAB","Ludwik Silberstein","non-Euclidean color geometry","color-difference formulas"]
---


American colorimetrist whose 1968 paper, "Ideal color space: Curvature of color space and its implications for industrial color tolerances" (*Palette* 29), states the curvature claim outright in its own title — making him, on the vault's current evidence, the earliest clearly identified figure to frame color-difference space in explicitly differential-geometric terms, roughly forty years before [[entity-philipp-urban|Urban et al. 2007]] and over half a century before Ahrens et al. 2024. Known to the vault so far only via citation (Bujack et al. 2025's bibliography); his own 1968 paper has not yet been read directly by any session.

## References
- [[claim-judd-1968-silberstein-1938-precede-color-space-curvature-claim]]