𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Some aspects of the visual scaling of large colour differences—II

✍ Scribed by G. G. Attridge; M. R. Pointer

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
150 KB
Volume
25
Category
Article
ISSN
0361-2317

No coin nor oath required. For personal study only.

✦ Synopsis

In an earlier article the authors related visuallyscaled large colour differences to ⌬E* values calculated using four colour-difference formulae. All four metrics yielded linear regressions from plots of visual colour difference against ⌬E*, and ⌬E* 94 gave the best linear fit, but the correlations were rather low. In an effort to clarify matters, the previous investigation is expanded to include data not hitherto examined. The link between visual colour difference and ⌬E* colour metrics is further explored in terms of a power law relationship over a wide range of lightness, hue, and chroma variations within CIELAB colour space. It is shown that power-law fits are superior to linear regressions in all cases, although correlations over large regions of the colour space are not very high. Partitioning of the experimental results to give reduced data sets in smaller regions is shown to improve correlations markedly, using power-law fits. Conclusions are drawn concerning the uniformity of CIELAB space in the context of both linear and power-law behavior.

📜 SIMILAR VOLUMES

Some Aspects of the Central Nervous Syst
Some Aspects of the Central Nervous System Activity of Urazole Derivatives II
✍ Mitchell, C.L. ;Keasling, H.H. ;Hirschler, C.W. 📂 Article 📅 1959 🏛 Elsevier ⚖ 429 KB

T h e neurotoxicity, antielectroshock, anti-Metrazol, and antistrychnine activities of another series of urazole compounds have been determined in mice. Depending upon the nature of the substituted nitrogen groups, the members of this series, as with the previous compounds, were found to possess ant

Some psychosocial aspects of nonlethal c
Some psychosocial aspects of nonlethal chondrodysplasias: VI. Assessment of family interaction using the FACES II questionnaire
✍ Hunter, Alasdair G.W. 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 52 KB 👁 2 views

Intrafamilial dynamics, including those between parents, and between parents and their children, have an important influence on the ultimate success or failure of a child's becoming a well adapted and socially integrated individual. Disability and/or birth defects, such as dwarfism, may alter family