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H
huali
Participant
May 9, 2020
Question

The color of Parade(YUV)

  • May 9, 2020
  • 4 replies
  • 3081 views

The color of U is magenta,and,

The color of V is magenta,yellow.

Why is it?

This topic has been closed for replies.

4 replies

R Neil Haugen
R Neil Haugen
Legend
May 11, 2020

Huali,

 

Look up each online ... LAB is a "perceived" color-space process for manipulating the image within an application. YUV is the sub-sampling process used for separating the data for transmission or storage. The concepts look somewhat similar but in reality have nothing in common.

 

I work with colorists on a daily basis. I am a regular contributing author on a major colorist's teaching subscription site. The use of a wide variety of scopes are a regular part of the discussions of the colorist's trade. And no one talks of using the Parade in YUV for anything.

 

Neil

 

 

Everyone's mileage always varies ...
M
Meg The Dog
Inspiring
May 9, 2020

Are you asking why is it displayed that way, or what is the use of such a display?

 

MtD

    H
    hualiAuthor
    Participant
    May 11, 2020

    @Meg_The_Dog  Both. Thanks!

    M
    Meg The Dog
    Inspiring
    May 11, 2020

    If I have a bunch of clips that need a fast color clean up - for a rough cut, for example -  the RGB parade in YUV is useful to quickly set the Exposure (Luminance, Shadow, Contrast) and get the correct Temperatre of a clip. When you adjust the Temperature, the two values you are adjusting are side by side in the YUV display, which makes it easier to see when they are balanced.

     

    MtD

    R Neil Haugen
    R Neil Haugen
    Legend
    May 9, 2020

    YUV color is split into three components, the Y being brightness, the U being Green/Magenta axis, the V being yellow blue axis.

     

    It's not something that most editors ... or even most colorists ... ever work in. Stay with the Parade in RGB ...

     

    The Waveform I do tend to like in YC/no chroma mode, but that's to get a contrasting view of the media to an also-showing Parade RGB.

     

    Neil

    Everyone's mileage always varies ...
    H
    hualiAuthor
    Participant
    May 11, 2020

    @R_Neil_Haugen

     

    Y ：Brightness
    U ：Green/Magenta
    V ：Yellow blue

     

    L：Brightness
    A ：Green/Magenta
    B ：Yellow blue

     

    What is the difference between YUV and LAB? Thanks！

     

    Ann Bens
    Community Expert
    Ann BensCommunity Expert
    Community Expert
    May 9, 2020

    Bit difficult to read...

    https://blogs.adobe.com/VideoRoad/2010/06/what_is_yuv.html

     

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