CIE 1931 XYZ
E543065
CIE 1931 XYZ is a foundational color space defined by the CIE that models human color perception using three tristimulus values (X, Y, Z) and underpins much of modern color science and colorimetry.
All labels observed (9)
How this entity was disambiguated
This entity first appeared as the object of triple T5767927 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: CIE 1931 XYZ Context triple: [CIE standard illuminant D65, hasTristimulusValuesSpace, CIE 1931 XYZ]
-
A.
CIE standard illuminant D65
CIE standard illuminant D65 is a standardized representation of average daylight with a correlated color temperature of about 6500 K, widely used as a reference white point in colorimetry and imaging systems.
-
B.
sRGB
sRGB is a standard RGB color space widely used for digital images, displays, and the web to ensure consistent color reproduction across devices.
-
C.
HSL
HSL is the public transport authority responsible for planning and organizing bus, tram, metro, commuter rail, and ferry services in the Helsinki metropolitan area of Finland.
-
D.
HSL
HSL is the three-letter National Rail station code for Haslemere railway station in Surrey, England.
-
E.
HSB
HSB is a specialty insurance and engineering services company best known for its expertise in equipment breakdown coverage and risk management solutions.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: CIE 1931 XYZ Target entity description: CIE 1931 XYZ is a foundational color space defined by the CIE that models human color perception using three tristimulus values (X, Y, Z) and underpins much of modern color science and colorimetry.
-
A.
CIE standard illuminant D65
CIE standard illuminant D65 is a standardized representation of average daylight with a correlated color temperature of about 6500 K, widely used as a reference white point in colorimetry and imaging systems.
-
B.
sRGB
sRGB is a standard RGB color space widely used for digital images, displays, and the web to ensure consistent color reproduction across devices.
-
C.
HSL
HSL is the public transport authority responsible for planning and organizing bus, tram, metro, commuter rail, and ferry services in the Helsinki metropolitan area of Finland.
-
D.
HSL
HSL is the three-letter National Rail station code for Haslemere railway station in Surrey, England.
-
E.
HSB
HSB is a specialty insurance and engineering services company best known for its expertise in equipment breakdown coverage and risk management solutions.
- F. None of above. chosen
Statements (54)
| Predicate | Object |
|---|---|
| instanceOf |
CIE color space
ⓘ
color space ⓘ tristimulus color space ⓘ |
| abbreviationOf |
Commission Internationale de l’Éclairage 1931 XYZ color space
ⓘ
linked to:
CIE 1931 XYZ
|
| assumesIlluminant | standard illuminant ⓘ |
| basedOn | CIE 1931 standard observer ⓘ |
| commonlyUsedIlluminant |
CIE standard illuminant A
ⓘ
CIE standard illuminant D50 ⓘ CIE standard illuminant D65 ⓘ |
| coordinateSystemType | linear color space ⓘ |
| definedBy | International Commission on Illumination ⓘ |
| domain | visible spectrum ⓘ |
| hasChromaticityCoordinates |
x
ⓘ
y ⓘ z ⓘ |
| hasComponent |
X
ⓘ
Y ⓘ Z ⓘ |
| hasFunction | color matching function ⓘ |
| hasPrimary |
X primary
ⓘ
Y primary ⓘ Z primary ⓘ |
| hasTristimulusValue |
X tristimulus value
ⓘ
Y tristimulus value ⓘ Z tristimulus value ⓘ |
| isDeviceIndependent | true ⓘ |
| isLinearIn | tristimulus values ⓘ |
| mathematicallyRelatedTo | RGB color spaces ⓘ |
| primaryType | imaginary primaries ⓘ |
| property |
additive color mixing
ⓘ
linear with respect to radiometric power ⓘ |
| relatedStandard |
CIE 1931 2° standard observer
ⓘ
linked to:
CIE 1931 standard observer
|
| underpins |
Adobe RGB color space
ⓘ
CIE 1931 xy chromaticity diagram ⓘ
linked to:
CIE 1931 XYZ
CIE L*a*b* color space ⓘ
linked to:
CIELAB
CIE L*u*v* color space ⓘ
linked to:
CIE 1976 L*u*v* color space
CIE xyY color space ⓘ
linked to:
CIE 1931 XYZ
Rec. 2020 color space ⓘ
linked to:
Recommendation ITU-R BT.2020
Rec. 709 color space ⓘ
linked to:
Rec. 709
sRGB color space ⓘ
linked to:
sRGB
|
| usedFor |
color management
ⓘ
color measurement ⓘ color specification ⓘ colorimetry ⓘ |
| usedIn |
camera characterization
ⓘ
display calibration ⓘ printing workflows ⓘ |
| usesColorMatchingFunctions |
CIE 1931 color matching functions
ⓘ
linked to:
CIE 1931 XYZ
|
| usesObserver | 2-degree standard observer ⓘ |
| usesQuantity | tristimulus value ⓘ |
| XRepresents | red–green opponent content (non-physiological) ⓘ |
| yearIntroduced | 1931 ⓘ |
| YRepresents | luminance ⓘ |
| ZRepresents | blue–yellow opponent content (non-physiological) ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: CIE 1931 XYZ Description of subject: CIE 1931 XYZ is a foundational color space defined by the CIE that models human color perception using three tristimulus values (X, Y, Z) and underpins much of modern color science and colorimetry.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: CIE 1931 XYZ
linked to: CIE 1931 XYZ
linked to: CIE 1931 XYZ
linked to: CIE 1931 XYZ
linked to: CIE 1931 XYZ
linked to: CIE 1931 XYZ
linked to: CIE 1931 XYZ
linked to: CIE 1931 XYZ
linked to: CIE 1931 XYZ
linked to: CIE 1931 XYZ