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    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-359E1198-B9F5-5EFD-B80B-C087E5A5DD1D" xml:lang="en"><title>Color

    13 Conversion</title><shortdesc>This topic describes the color conversion between RGB and YUV.

    14 The details depend on which YUV color space is used.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

    15 <p>For analogue signals (standard definition), the <b>ITU BT-601</b> formula

    16 is used. </p>

    17 <codeblock id="GUID-898BEBCA-ADC9-518A-B4AD-0C8DBF2AE87D" xml:space="preserve">R' = Y' + 1.403V'

    18 G' = Y' - 0.344U' - 0.714V'

    19 B' = Y' + 1.770U'</codeblock>

    20 <p>For high-definition signals, the <b> ITU BT-709</b> formula is used. </p>

    21 <codeblock id="GUID-24AA061D-9587-5D41-9246-5DBA5708BE75" xml:space="preserve">R' = Y' + 1.5701V'

    22 G' = Y' - 0.1870U' - 0.4664V'

    23 B' = Y' - 1.8556U'</codeblock>

    24 <p>Where, </p>

    25 <ul>

    26 <li id="GUID-5B70C4D2-8E2C-53D8-9B7F-E19FEAC5CA5A">Y' is Y scaled to be in

    27 the range [0, 1]. </li>

    28 <li id="GUID-6F311DD9-F8DB-5672-8447-DF6FA756B8F5">U' and V' are the corresponding

    29 samples scaled to the range [-0.5, 0.5]. </li>

    30 <li id="GUID-3F2ED876-7B73-567F-A3C6-40A90AD40053">R', G' and B' then have

    31 to be clamped to the range [0, 1] and scaled up as appropriate. </li>

    32 </ul>

    33 </conbody><related-links>

    34 <link href="GUID-47701648-CEC1-564C-A6BF-CC42E78E701F.dita"><linktext>YUV Pixel

    35 Formats Overview</linktext></link>

    36 </related-links></concept>