Pixel Group (for pixel packing)
E783977
Pixel Group (for pixel packing) is a data structuring concept from RFC 4175 that specifies how multiple pixels are grouped together in memory or on the wire to efficiently represent uncompressed video streams.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pixel Group (for pixel packing) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9191749 — 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: Pixel Group (for pixel packing) Context triple: [RFC 4175, definesField, Pixel Group (for pixel packing)]
-
A.
PIXL
PIXL is a highly sensitive X-ray fluorescence spectrometer on NASA's Perseverance rover used to analyze the elemental composition of Martian rocks and soil at microscopic scales.
-
B.
Pixels
Pixels is a 2015 science fiction comedy film in which classic video game characters attack Earth, prompting former arcade champions to defend the planet.
-
C.
A Pixel is Not a Little Square
"A Pixel is Not a Little Square" is a well-known essay by computer graphics pioneer Alvy Ray Smith that clarifies the true mathematical and perceptual nature of pixels in digital imaging.
-
D.
PXL
PXL is the three-letter IATA airport code assigned to Polacca Airport in Arizona, United States.
-
E.
PIX
PIX (Patient Identifier Cross-referencing) is an IHE IT Infrastructure profile that enables the cross-referencing and sharing of patient identifiers across multiple clinical information systems and institutions.
- 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: Pixel Group (for pixel packing) Target entity description: Pixel Group (for pixel packing) is a data structuring concept from RFC 4175 that specifies how multiple pixels are grouped together in memory or on the wire to efficiently represent uncompressed video streams.
-
A.
PIXL
PIXL is a highly sensitive X-ray fluorescence spectrometer on NASA's Perseverance rover used to analyze the elemental composition of Martian rocks and soil at microscopic scales.
-
B.
Pixels
Pixels is a 2015 science fiction comedy film in which classic video game characters attack Earth, prompting former arcade champions to defend the planet.
-
C.
A Pixel is Not a Little Square
"A Pixel is Not a Little Square" is a well-known essay by computer graphics pioneer Alvy Ray Smith that clarifies the true mathematical and perceptual nature of pixels in digital imaging.
-
D.
PXL
PXL is the three-letter IATA airport code assigned to Polacca Airport in Arizona, United States.
-
E.
PIX
PIX (Patient Identifier Cross-referencing) is an IHE IT Infrastructure profile that enables the cross-referencing and sharing of patient identifiers across multiple clinical information systems and institutions.
- F. None of above. chosen
Statements (35)
| Predicate | Object |
|---|---|
| instanceOf |
data structuring concept
ⓘ
video encoding concept ⓘ |
| appliesTo |
pixel packing
ⓘ
sampling structures ⓘ |
| constrains |
how pixel components are interleaved
ⓘ
how pixels are packed into octets ⓘ |
| definedIn | RFC 4175 ⓘ |
| documentSectionOf |
RFC 4175: RTP Payload Format for Uncompressed Video
ⓘ
linked to:
RTP Payload Format for Uncompressed Video
|
| enables |
consistent interpretation of pixel data across endpoints
ⓘ
interoperable uncompressed video transport ⓘ |
| groups |
multiple pixels
ⓘ
pixel components ⓘ |
| hasProperty |
implementation-independent description of pixel layout
ⓘ
supports different bit depths ⓘ supports different color sampling schemes ⓘ supports different pixel orders ⓘ |
| hasPurpose |
efficient memory layout of pixels
ⓘ
efficient on-the-wire representation of pixels ⓘ efficient representation of uncompressed video ⓘ |
| partOf |
RTP payload format specification
ⓘ
uncompressed video RTP payload header semantics ⓘ |
| relatedTo |
RGB sampling
ⓘ
RTP payload format for uncompressed video ⓘ YCbCr sampling ⓘ chroma subsampling ⓘ video sampling formats ⓘ |
| specifiedBy |
IETF
ⓘ
linked to:
Internet Engineering Task Force
|
| usedBy |
RTP receivers for uncompressed video
ⓘ
RTP senders for uncompressed video ⓘ |
| usedFor |
defining pixel alignment in memory
ⓘ
defining pixel alignment on the wire ⓘ mapping pixels into RTP payloads ⓘ |
| usedIn |
uncompressed video over RTP
ⓘ
uncompressed video streams ⓘ uncompressed video transport ⓘ |
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: Pixel Group (for pixel packing) Description of subject: Pixel Group (for pixel packing) is a data structuring concept from RFC 4175 that specifies how multiple pixels are grouped together in memory or on the wire to efficiently represent uncompressed video streams.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.