輝度成分

English translation: luminance component/signal

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
Japanese term or phrase:輝度成分
English translation:luminance component/signal
Entered by: cinefil

02:26 Dec 7, 2005
Japanese to English translations [PRO]
Tech/Engineering - Electronics / Elect Eng / LCD
Japanese term or phrase: 輝度成分
GreggらTrace R&D Centerのメンバーが、従来のWCAG草案でも参考として示していたAERTの「色の差」によるコントラスト評価法に代わる方法としてこのLCRを案出したということだ。AERTはYIQのYを「明るさ」(brightness)とよび、LCRはYPrPbのYを「輝度」(luminosity)としているが、いずれも色の輝度成分を抽出しようというもので、本質的には同じ(「明度」というとまた話が違ってきて、特に日本語でいう「明度」はいろんな使われ方があってややこしい)。違いは、前者が「差」を取っているのに対し、後者は「比」を基準にしようというところにある。
http://www.kanzaki.com/memo/
cinefil
Japan
Local time: 10:07
luminance component/signal
Explanation:
In analog TV (YCrCb), Y is the "luminance" or black and white component of the signal. This trickery was necessary to retain backward compatibility with B&W TV sets.
Selected response from:

Maynard Hogg
Canada
Local time: 18:07
Grading comment
thanks a lot
http://www.screensound.gov.au/glossary.nsf/Pages/Luminance?OpenDocument
3 KudoZ points were awarded for this answer



Summary of answers provided
2luminescent element
Anita Kobayashi
1 +1luminance component/signal
Maynard Hogg
2luminosity contrast ratio
ishigami
1luminous component(s)
KathyT


  

Answers


7 mins   confidence: Answerer confidence 1/5Answerer confidence 1/5
輝度成分
luminous component(s)


Explanation:
ではだめでしょうか?

ASTR 103: Stars - Finding, Distances, and Motions
... Stars are the chief luminous component of galaxies with millions ... a member of a class whose luminosity is known ... so that we know intrinsic brightness of subject ...
www.physics.gmu.edu/classinfo/ astr103/CourseNotes/str_orgz.htm

[PDF] arXiv:astro-ph/9801073 v1 9 Jan 1998
luminosity, two orders of magnitude in surface brightness, and almost a decade... These curves ignore the contribution of the luminous component. ...
arxiv.org/pdf/astro-ph/9801073

Zucker et al., Andromeda IX
... And IX's extremely low surface brightness, no unresolved luminous component... And IX is the lowest surface brightness, lowest luminosity galaxy found ...
dx.doi.org/10.1086/424691

[PDF] Quasars and Low Surface Brightness Galaxies as Probes of Dark Matter
centre to be too large to be easily attributed to the luminous components. ...both decreasing surface brightness and luminosity (eg McGaugh & de Blok ...
www.astro.uu.se/‾ez/papers/thesis/summary.pdf




    Reference: http://www.google.com/search?hl=en&lr=&c2coff=1&q=luminosity...
KathyT
Australia
Local time: 11:07
Works in field
Native speaker of: English
PRO pts in category: 88
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23 mins   confidence: Answerer confidence 2/5Answerer confidence 2/5
輝度成分
luminescent element


Explanation:
In case of LED "luminescent element" is frequently used.

--------------------------------------------------
Note added at 27 mins (2005-12-07 02:53:43 GMT)
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Sorry, this is the link
http://www.google.com/search?q=luminescent element&hl=de&lr=...


    Reference: http://www.google.com/search?hl=de&ie=ISO-8859-1&q=luminesce...
Anita Kobayashi
Japan
Local time: 10:07
Works in field
Native speaker of: Native in GermanGerman
PRO pts in category: 12
Login to enter a peer comment (or grade)

29 mins   confidence: Answerer confidence 1/5Answerer confidence 1/5 peer agreement (net): +1
輝度成分
luminance component/signal


Explanation:
In analog TV (YCrCb), Y is the "luminance" or black and white component of the signal. This trickery was necessary to retain backward compatibility with B&W TV sets.

Maynard Hogg
Canada
Local time: 18:07
Specializes in field
Native speaker of: English
PRO pts in category: 45
Grading comment
thanks a lot
http://www.screensound.gov.au/glossary.nsf/Pages/Luminance?OpenDocument

Peer comments on this answer (and responses from the answerer)
agree  Derek Newpor (X): If related to colour tv then I agree with luminance component(s)
6 hrs
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1 hr   confidence: Answerer confidence 2/5Answerer confidence 2/5
輝度成分
luminosity contrast ratio


Explanation:
http://www.w3.org/TR/2005/WD-WCAG20-20051123/guidelines.html...

ishigami
Local time: 09:07
Specializes in field
Native speaker of: Native in JapaneseJapanese
PRO pts in category: 80
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