YUV — Wikipédia

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Disponible en 17 langues." > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-17" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">17 langues</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%88%D8%A7%D9%8A_%D9%8A%D9%88_%D9%81%D9%8A" title="واي يو في – arabe" lang="ar" hreflang="ar" data-title="واي يو في" data-language-autonym="العربية" data-language-local-name="arabe" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/YUV" title="YUV – azerbaïdjanais" lang="az" hreflang="az" data-title="YUV" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaïdjanais" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/YUV" title="YUV – biélorusse" lang="be" hreflang="be" data-title="YUV" data-language-autonym="Беларуская" data-language-local-name="biélorusse" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/YUV" title="YUV – tchèque" lang="cs" hreflang="cs" data-title="YUV" data-language-autonym="Čeština" data-language-local-name="tchèque" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/YUV-Farbmodell" title="YUV-Farbmodell – allemand" lang="de" hreflang="de" data-title="YUV-Farbmodell" data-language-autonym="Deutsch" data-language-local-name="allemand" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Y%E2%80%B2UV" title="Y′UV – anglais" lang="en" hreflang="en" data-title="Y′UV" data-language-autonym="English" data-language-local-name="anglais" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/YUV" title="YUV – espagnol" lang="es" hreflang="es" data-title="YUV" data-language-autonym="Español" data-language-local-name="espagnol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/YUV" title="YUV – italien" lang="it" hreflang="it" data-title="YUV" data-language-autonym="Italiano" data-language-local-name="italien" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/YUV" title="YUV – japonais" lang="ja" hreflang="ja" data-title="YUV" data-language-autonym="日本語" data-language-local-name="japonais" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/YUV" title="YUV – coréen" lang="ko" hreflang="ko" data-title="YUV" data-language-autonym="한국어" data-language-local-name="coréen" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/YUV" title="YUV – néerlandais" lang="nl" hreflang="nl" data-title="YUV" data-language-autonym="Nederlands" data-language-local-name="néerlandais" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/YUV" title="YUV – polonais" lang="pl" hreflang="pl" data-title="YUV" data-language-autonym="Polski" data-language-local-name="polonais" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/YUV" title="YUV – russe" lang="ru" hreflang="ru" data-title="YUV" data-language-autonym="Русский" data-language-local-name="russe" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/YUV" title="YUV – turc" lang="tr" hreflang="tr" data-title="YUV" data-language-autonym="Türkçe" data-language-local-name="turc" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/YUV" title="YUV – ukrainien" lang="uk" hreflang="uk" data-title="YUV" data-language-autonym="Українська" data-language-local-name="ukrainien" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/YUV" title="YUV – vietnamien" lang="vi" hreflang="vi" data-title="YUV" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamien" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/YUV" title="YUV – chinois" lang="zh" hreflang="zh" data-title="YUV" data-language-autonym="中文" data-language-local-name="chinois" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1455711#sitelinks-wikipedia" title="Modifier les liens interlangues" 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href="/wiki/YUV"><span>Lire</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=YUV&veaction=edit" title="Modifier cette page [v]" accesskey="v"><span>Modifier</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=YUV&action=edit" title="Modifier le wikicode de cette page [e]" accesskey="e"><span>Modifier le code</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=YUV&action=history" title="Historique des versions de cette page [h]" accesskey="h"><span>Voir l’historique</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Outils de la page"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" 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class="mw-list-item"><a href="//fr.wikipedia.org/wiki/Aide:Importer_un_fichier" title="Téléverser des fichiers [u]" accesskey="u"><span>Téléverser un fichier</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=YUV&oldid=217700913" title="Adresse permanente de cette version de cette page"><span>Lien permanent</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=YUV&action=info" title="Davantage d’informations sur cette page"><span>Informations sur la page</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Sp%C3%A9cial:Citer&page=YUV&id=217700913&wpFormIdentifier=titleform" title="Informations sur la manière de citer cette page"><span>Citer cette page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Sp%C3%A9cial:UrlShortener&url=https%3A%2F%2Ffr.wikipedia.org%2Fwiki%2FYUV"><span>Obtenir l'URL raccourcie</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Sp%C3%A9cial:QrCode&url=https%3A%2F%2Ffr.wikipedia.org%2Fwiki%2FYUV"><span>Télécharger le code QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Imprimer / exporter </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Sp%C3%A9cial:Livre&bookcmd=book_creator&referer=YUV"><span>Créer un livre</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Sp%C3%A9cial:DownloadAsPdf&page=YUV&action=show-download-screen"><span>Télécharger comme PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=YUV&printable=yes" title="Version imprimable de cette page [p]" accesskey="p"><span>Version imprimable</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Dans d’autres projets </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:YUV" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1455711" title="Lien vers l’élément dans le dépôt de données connecté [g]" accesskey="g"><span>Élément Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Outils de la page"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Apparence"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Apparence</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">déplacer vers la barre latérale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">masquer</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Un article de Wikipédia, l'encyclopédie libre.</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="fr" dir="ltr"><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fichier:Yuv.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Yuv.png/220px-Yuv.png" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/e/ec/Yuv.png 1.5x" data-file-width="305" data-file-height="305" /></a><figcaption>Exemple d'une plage U-V, où Y' = 0,5, représenté à l'intérieur de la gamme de couleurs R'G'B' ; en noir et blanc, seule <i>Y'</i> est utilisée, toutes ces couleurs rendent donc le même gris.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fichier:Barn-yuv.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/29/Barn-yuv.png/220px-Barn-yuv.png" decoding="async" width="220" height="658" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/29/Barn-yuv.png/330px-Barn-yuv.png 1.5x, //upload.wikimedia.org/wikipedia/commons/2/29/Barn-yuv.png 2x" data-file-width="400" data-file-height="1196" /></a><figcaption>Décomposition d'une image en Y'UV.</figcaption></figure> <p>Le modèle <b>YUV</b> ou plus précisément <b>Y'UV</b> définit un <a href="/wiki/Espace_de_couleur" title="Espace de couleur">espace de couleur</a> en trois composantes. La première, Y', représente la <i><a href="/wiki/Luminance#Signal_de_luminance_ou_Luma" title="Luminance">luma</a></i> (à ne pas confondre avec la <a href="/wiki/Luminance_relative" class="mw-redirect" title="Luminance relative">luminance relative</a> notée Y, le symbole prime de Y' indiquant une <a href="/wiki/Gamma_(photographie)" title="Gamma (photographie)">correction de gamma</a>) et les deux autres, U et V, représentent la <a href="/wiki/Chrominance" title="Chrominance">chrominance</a>. Y'UV est utilisé dans le système de diffusion télévisuelle <a href="/wiki/Phase_Alternated_Line" class="mw-redirect" title="Phase Alternated Line">PAL</a>. Le <a href="/wiki/National_Television_System_Committee" title="National Television System Committee">NTSC</a> utilise l'espace <a href="/wiki/Y%27IQ" class="mw-redirect" title="Y'IQ">Y'IQ</a>. Le système <a href="/wiki/S%C3%A9quentiel_couleur_%C3%A0_m%C3%A9moire" class="mw-redirect" title="Séquentiel couleur à mémoire">SÉCAM</a> utilise quant à lui l'espace colorimétrique <a href="/wiki/Y%27DbDr" class="mw-redirect" title="Y'DbDr">Y'DbDr</a>, dérivé de Y'UV. </p><p>Dans le traitement des <a href="/wiki/Signal_vid%C3%A9o" title="Signal vidéo">signaux vidéo</a> couleur, on ajuste les coefficients des signaux U et V de telle sorte que la valeur crête à crête soit égale à la valeur maximale de Y', soit <span class="nowrap">0,7 V</span>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Intérêt_et_principe"><span id="Int.C3.A9r.C3.AAt_et_principe"></span>Intérêt et principe</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=YUV&veaction=edit&section=1" title="Modifier la section : Intérêt et principe" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=YUV&action=edit&section=1" title="Modifier le code source de la section : Intérêt et principe"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Ce standard a été développé à une époque où il fallait assurer la compatibilité entre des <a href="/wiki/T%C3%A9l%C3%A9viseur" title="Téléviseur">récepteurs de télévision</a> <a href="/wiki/Noir_et_blanc" title="Noir et blanc">noir et blanc</a> et des récepteurs couleur. </p><p>La couleur étant créée par la juxtaposition de trois types de <a href="/wiki/Luminophore" title="Luminophore">luminophores</a> rouge (R), vert (<a href="/wiki/Anglais" title="Anglais">anglais</a> : <span class="lang-en" lang="en"><i>green</i></span>, G) et bleu (B), il faut transmettre trois composantes, trois signaux. Cependant, le noir et blanc ne comprend qu'une seule teinte, le niveau de gris. Les trois signaux transmis ne sont donc pas les trois composantes RGB mais la teinte de gris Y ou Y', et la différence entre cette teinte et deux autres composantes. </p><p>Ainsi, un récepteur noir et blanc ne traitera que la composante Y ou Y' et les récepteurs couleur déduiront les trois composantes chromatiques par simple soustraction. Schématiquement, on transmet trois composantes Y, U et V : </p> <dl><dd>Y ≃ R + G + B</dd> <dd>U ≃ B – Y</dd> <dd>V ≃ R – Y</dd></dl> <p>et dans le cas d'un récepteur couleur, on déduit : </p> <dl><dd>R ≃ Y + V</dd> <dd>G ≃ (–Y – U – V)</dd> <dd>B ≃ Y + U</dd></dl> <p>Dans la pratique, les luminophores n'ont pas le même rendement, on applique donc des coefficients correcteurs. </p><p><br /> </p> <div class="mw-heading mw-heading2"><h2 id="Équations"><span id=".C3.89quations"></span>Équations</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=YUV&veaction=edit&section=2" title="Modifier la section : Équations" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=YUV&action=edit&section=2" title="Modifier le code source de la section : Équations"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Le signal Y'UV est créé depuis une source R'G'B' (rouge, vert et bleu), les symboles prime indiquant une <a href="/wiki/Gamma_(photographie)" title="Gamma (photographie)">correction de gamma</a>. Les valeurs de R', G' et B' sont additionnées selon leur poids relatif pour obtenir le signal Y'. Ce dernier représente la <a href="/wiki/Luminance" title="Luminance">luminance</a> de la source. Le signal U est obtenu en soustrayant le Y' du signal bleu d'origine ; de façon similaire le V est obtenu en soustrayant Y' du signal rouge. Ces opérations peuvent facilement être réalisées au moyen d'un circuit analogique. </p><p>Les équations suivantes peuvent être utilisées pour dériver Y', U et V à partir des composantes R', G' et B' : </p> <dl><dd><span class="texhtml">(R', G', B', Y') ∈ [0 ; 1]<sup>4</sup></span></dd> <dd><span class="texhtml">U ∈ [−0,436 ; 0,436]</span></dd> <dd><span class="texhtml">V ∈ [−0,615 ; 0,615]</span></dd></dl> <p>Cependant, les limites autorisées sur U et V dépendent de Y'. </p><p>De R'G'B' à Y'UV : </p> <dl><dd><span class="texhtml">Y' = 0,299⋅R' + 0,587⋅G' + 0,114⋅B'</span></dd> <dd><span class="texhtml">U = 0,492⋅(B' − Y') = −0,14713⋅R' − 0,28886⋅G' + 0,436⋅B' </span></dd> <dd><span class="texhtml">V = 0,877⋅(R' − Y') = 0,615⋅R' − 0,51498⋅G' – 0,10001⋅B' </span></dd></dl> <p>De Y'UV à R'G'B' : </p> <dl><dd><span class="texhtml">R' = Y' + 1,13983⋅V</span></dd> <dd><span class="texhtml">G' = Y' − 0,39465⋅U − 0,58060⋅V</span></dd> <dd><span class="texhtml">B' = Y' + 2,03211⋅U</span></dd></dl> <p>Ou en utilisant ces <a href="/wiki/Matrice_(math%C3%A9matiques)" title="Matrice (mathématiques)">matrices</a> : </p><p><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\begin{bmatrix}\mathrm {Y} '\\\mathrm {U} \\\mathrm {V} \end{bmatrix}}={\begin{bmatrix}0,299&0,587&0,114\\-0,147\,13&-0,288\,86&0,436\\0,615&-0,514\,98&-0,100\,01\end{bmatrix}}{\begin{bmatrix}\mathrm {R} '\\\mathrm {G} '\\\mathrm {B} '\end{bmatrix}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow> <mo>[</mo> <mtable rowspacing="4pt" columnspacing="1em"> <mtr> <mtd> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">Y</mi> </mrow> <mo>′</mo> </msup> </mtd> </mtr> <mtr> <mtd> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">U</mi> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">V</mi> </mrow> </mtd> </mtr> </mtable> <mo>]</mo> </mrow> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow> <mo>[</mo> <mtable rowspacing="4pt" columnspacing="1em"> <mtr> <mtd> <mn>0</mn> <mo>,</mo> <mn>299</mn> </mtd> <mtd> <mn>0</mn> <mo>,</mo> <mn>587</mn> </mtd> <mtd> <mn>0</mn> <mo>,</mo> <mn>114</mn> </mtd> </mtr> <mtr> <mtd> <mo>−</mo> <mn>0</mn> <mo>,</mo> <mn>147</mn> <mspace width="thinmathspace"></mspace> <mn>13</mn> </mtd> <mtd> <mo>−</mo> <mn>0</mn> <mo>,</mo> <mn>288</mn> <mspace width="thinmathspace"></mspace> <mn>86</mn> </mtd> <mtd> <mn>0</mn> <mo>,</mo> <mn>436</mn> </mtd> </mtr> <mtr> <mtd> <mn>0</mn> <mo>,</mo> <mn>615</mn> </mtd> <mtd> <mo>−</mo> <mn>0</mn> <mo>,</mo> <mn>514</mn> <mspace width="thinmathspace"></mspace> <mn>98</mn> </mtd> <mtd> <mo>−</mo> <mn>0</mn> <mo>,</mo> <mn>100</mn> <mspace width="thinmathspace"></mspace> <mn>01</mn> </mtd> </mtr> </mtable> <mo>]</mo> </mrow> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mrow> <mo>[</mo> <mtable rowspacing="4pt" columnspacing="1em"> <mtr> <mtd> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">R</mi> </mrow> <mo>′</mo> </msup> </mtd> </mtr> <mtr> <mtd> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">G</mi> </mrow> <mo>′</mo> </msup> </mtd> </mtr> <mtr> <mtd> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">B</mi> </mrow> <mo>′</mo> </msup> </mtd> </mtr> </mtable> <mo>]</mo> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\begin{bmatrix}\mathrm {Y} '\\\mathrm {U} \\\mathrm {V} \end{bmatrix}}={\begin{bmatrix}0,299&0,587&0,114\\-0,147\,13&-0,288\,86&0,436\\0,615&-0,514\,98&-0,100\,01\end{bmatrix}}{\begin{bmatrix}\mathrm {R} '\\\mathrm {G} '\\\mathrm {B} '\end{bmatrix}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/ed03338ba82b07aeb1b992b7469ad71bec5d373f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -4.171ex; width:54.849ex; height:9.509ex;" alt="{\displaystyle {\begin{bmatrix}\mathrm {Y} '\\\mathrm {U} \\\mathrm {V} \end{bmatrix}}={\begin{bmatrix}0,299&0,587&0,114\\-0,147\,13&-0,288\,86&0,436\\0,615&-0,514\,98&-0,100\,01\end{bmatrix}}{\begin{bmatrix}\mathrm {R} '\\\mathrm {G} '\\\mathrm {B} '\end{bmatrix}}}" /></span> </p><p><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\begin{bmatrix}\mathrm {R} '\\\mathrm {G} '\\\mathrm {B} '\end{bmatrix}}={\begin{bmatrix}1&0&1,139\,83\\1&-0,394\,65&-0,580\,60\\1&2,032\,11&0\end{bmatrix}}{\begin{bmatrix}\mathrm {Y} '\\\mathrm {U} \\\mathrm {V} \end{bmatrix}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow> <mo>[</mo> <mtable rowspacing="4pt" columnspacing="1em"> <mtr> <mtd> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">R</mi> </mrow> <mo>′</mo> </msup> </mtd> </mtr> <mtr> <mtd> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">G</mi> </mrow> <mo>′</mo> </msup> </mtd> </mtr> <mtr> <mtd> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">B</mi> </mrow> <mo>′</mo> </msup> </mtd> </mtr> </mtable> <mo>]</mo> </mrow> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow> <mo>[</mo> <mtable rowspacing="4pt" columnspacing="1em"> <mtr> <mtd> <mn>1</mn> </mtd> <mtd> <mn>0</mn> </mtd> <mtd> <mn>1</mn> <mo>,</mo> <mn>139</mn> <mspace width="thinmathspace"></mspace> <mn>83</mn> </mtd> </mtr> <mtr> <mtd> <mn>1</mn> </mtd> <mtd> <mo>−</mo> <mn>0</mn> <mo>,</mo> <mn>394</mn> <mspace width="thinmathspace"></mspace> <mn>65</mn> </mtd> <mtd> <mo>−</mo> <mn>0</mn> <mo>,</mo> <mn>580</mn> <mspace width="thinmathspace"></mspace> <mn>60</mn> </mtd> </mtr> <mtr> <mtd> <mn>1</mn> </mtd> <mtd> <mn>2</mn> <mo>,</mo> <mn>032</mn> <mspace width="thinmathspace"></mspace> <mn>11</mn> </mtd> <mtd> <mn>0</mn> </mtd> </mtr> </mtable> <mo>]</mo> </mrow> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mrow> <mo>[</mo> <mtable rowspacing="4pt" columnspacing="1em"> <mtr> <mtd> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">Y</mi> </mrow> <mo>′</mo> </msup> </mtd> </mtr> <mtr> <mtd> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">U</mi> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">V</mi> </mrow> </mtd> </mtr> </mtable> <mo>]</mo> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\begin{bmatrix}\mathrm {R} '\\\mathrm {G} '\\\mathrm {B} '\end{bmatrix}}={\begin{bmatrix}1&0&1,139\,83\\1&-0,394\,65&-0,580\,60\\1&2,032\,11&0\end{bmatrix}}{\begin{bmatrix}\mathrm {Y} '\\\mathrm {U} \\\mathrm {V} \end{bmatrix}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/f7bad3b73b6198b8b8013c0f283b28d844c39589" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -4.171ex; width:45.807ex; height:9.509ex;" alt="{\displaystyle {\begin{bmatrix}\mathrm {R} '\\\mathrm {G} '\\\mathrm {B} '\end{bmatrix}}={\begin{bmatrix}1&0&1,139\,83\\1&-0,394\,65&-0,580\,60\\1&2,032\,11&0\end{bmatrix}}{\begin{bmatrix}\mathrm {Y} '\\\mathrm {U} \\\mathrm {V} \end{bmatrix}}}" /></span> </p><p>Ces coefficients sont empiriques. </p> <div class="mw-heading mw-heading2"><h2 id="Voir_aussi">Voir aussi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=YUV&veaction=edit&section=3" title="Modifier la section : Voir aussi" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=YUV&action=edit&section=3" title="Modifier le code source de la section : Voir aussi"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Articles_connexes">Articles connexes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=YUV&veaction=edit&section=4" title="Modifier la section : Articles connexes" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=YUV&action=edit&section=4" title="Modifier le code source de la section : Articles connexes"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Syst%C3%A8me_colorim%C3%A9trique" class="mw-redirect" title="Système colorimétrique">Système colorimétrique</a></li> <li><a href="/wiki/YCbCr" title="YCbCr">YCbCr</a></li> <li><a href="/wiki/YIQ" title="YIQ">YIQ</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Lien_externe">Lien externe</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=YUV&veaction=edit&section=5" title="Modifier la section : Lien externe" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=YUV&action=edit&section=5" title="Modifier le code source de la section : Lien externe"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="ouvrage">« <a rel="nofollow" class="external text" href="http://www.commentcamarche.net/contents/1221-le-format-Y'uv-Y'crcb"><cite style="font-style:normal;">Le format YUV (YCrCb)</cite></a> », sur <span class="italique"><a href="/wiki/Comment_%C3%A7a_marche" title="Comment ça marche">Comment ça marche</a></span></span></li></ul> <ul id="bandeau-portail" class="bandeau-portail"><li><span class="bandeau-portail-element"><span class="bandeau-portail-icone"><span class="noviewer" typeof="mw:File"><a href="/wiki/Portail:Couleurs" title="Portail des couleurs"><img alt="icône décorative" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Eight-colour-wheel-2D.png/24px-Eight-colour-wheel-2D.png" decoding="async" width="24" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Eight-colour-wheel-2D.png/36px-Eight-colour-wheel-2D.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Eight-colour-wheel-2D.png/48px-Eight-colour-wheel-2D.png 2x" data-file-width="1100" data-file-height="1099" /></a></span></span> <span class="bandeau-portail-texte"><a href="/wiki/Portail:Couleurs" title="Portail:Couleurs">Portail des couleurs</a></span> </span></li> <li><span class="bandeau-portail-element"><span class="bandeau-portail-icone"><span class="noviewer" typeof="mw:File"><a href="/wiki/Portail:Imagerie_num%C3%A9rique" title="Portail de l’imagerie numérique"><img alt="icône décorative" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Utah_teapot.png/30px-Utah_teapot.png" decoding="async" width="30" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Utah_teapot.png/45px-Utah_teapot.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Utah_teapot.png/59px-Utah_teapot.png 2x" data-file-width="300" data-file-height="243" /></a></span></span> <span class="bandeau-portail-texte"><a href="/wiki/Portail:Imagerie_num%C3%A9rique" title="Portail:Imagerie numérique">Portail de l’imagerie numérique</a></span> </span></li> </ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; 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mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Basculer la table des matières</span> </label> <div class="vector-dropdown-content"> <div id="vector-sticky-header-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div class="vector-sticky-header-context-bar-primary" aria-hidden="true" ><span class="mw-page-title-main">YUV</span></div> </div> </div> <div class="vector-sticky-header-end" aria-hidden="true"> <div class="vector-sticky-header-icons"> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-talk-sticky-header" tabindex="-1" data-event-name="talk-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbles mw-ui-icon-wikimedia-speechBubbles"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-subject-sticky-header" tabindex="-1" data-event-name="subject-sticky-header"><span class="vector-icon mw-ui-icon-article mw-ui-icon-wikimedia-article"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-history-sticky-header" tabindex="-1" data-event-name="history-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-history mw-ui-icon-wikimedia-wikimedia-history"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only mw-watchlink" id="ca-watchstar-sticky-header" tabindex="-1" data-event-name="watch-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-star mw-ui-icon-wikimedia-wikimedia-star"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-ve-edit-sticky-header" tabindex="-1" data-event-name="ve-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-edit mw-ui-icon-wikimedia-wikimedia-edit"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-edit-sticky-header" tabindex="-1" data-event-name="wikitext-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-wikiText mw-ui-icon-wikimedia-wikimedia-wikiText"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-viewsource-sticky-header" tabindex="-1" data-event-name="ve-edit-protected-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-editLock mw-ui-icon-wikimedia-wikimedia-editLock"></span> <span></span> </a> </div> <div class="vector-sticky-header-buttons"> <button class="cdx-button cdx-button--weight-quiet mw-interlanguage-selector" id="p-lang-btn-sticky-header" tabindex="-1" data-event-name="ui.dropdown-p-lang-btn-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-language mw-ui-icon-wikimedia-wikimedia-language"></span> <span>17 langues</span> </button> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive" id="ca-addsection-sticky-header" tabindex="-1" data-event-name="addsection-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbleAdd-progressive mw-ui-icon-wikimedia-speechBubbleAdd-progressive"></span> <span>Ajouter un sujet</span> </a> </div> <div class="vector-sticky-header-icon-end"> <div class="vector-user-links"> </div> </div> </div> </div> </div> <div class="mw-portlet mw-portlet-dock-bottom emptyPortlet" id="p-dock-bottom"> <ul> </ul> </div> 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