Screenshot of HDR monitor: jxr to png

Discus and support Screenshot of HDR monitor: jxr to png in XBoX on Windows to solve the problem; Hello, when taking a screenshot from HDR monitor (Windows logo key + Alt + PrtScn ), two images are saved : - 1 .jxr file (16-bits image) which... Discussion in 'XBoX on Windows' started by ZMauro, Sep 9, 2022.

  1. ZMauro
    ZMauro Guest

    Screenshot of HDR monitor: jxr to png


    Hello,
    when taking a screenshot from HDR monitor (Windows logo key + Alt + PrtScn ), two images are saved :
    - 1 .jxr file (16-bits image) which preserve the HDR content
    - 1 .png file (8-bits image) which is a tone-mapped version of the jxr image.

    Could you describe how the image is tone-mapped from jxr to png (16-bits to 8-bits) ?

    :)
     
    ZMauro, Sep 9, 2022
    #1
  2. Georges C. Win User

    Screenshot of HDR monitor: jxr to png

    Hello, first it's a pleasure to be able to help you today.

    My name is welcome to the community.

    Hello ZMaura, this has to do with the depth of the image, the more values the more depth in the image relative to the colors it will display.

    I leave below a link that explains well the question of the bits in the image

    https://helpx.adobe.com/photoshop/using/bit-dep...

    Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
  3. Georges C. Win User

    Screenshot of HDR monitor: jxr to png

    Hello again, this is a good question but I don't think I know and I don't know if you'll find the answer, because this type of algorithm is proprietary and companies usually don't disclose that.

    Companies like Adobe, Apple, DJI, Canon, Nikon etc. have their own algorithms to make the image .jpg, . Mpg etc formats are standart of the defined by the Independent JPEG Group, you can find on the internet the original code that was made in 1991 for free, however companies later developed their own algorithm and this becomes intellectual property of each of them.

    https://jpeg.org/

    Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
  4. ZMauro Win User

    Screenshot of HDR monitor: jxr to png

    Hello Georges,
    Thank you for the link but this is not what I'm looking for.
    My question is specific to the algorithm that Windows uses to tone-map the JPEG XR image to PNG image.
    I suppose the JPEG XR is defined in a wide color gamut (eg BT2020) with a PQ transfer function while the PNG is the result of a conversion from PQ to gamma transfer function in a smaller color gamut (eg sRGB).

    How this conversion is done by Windows ?
  5. Lucas Lauer Win User

    Strong aliasing Xbox Series X

    On your console display settings, is HDR enabled? Would you please share a screenshot with me of your display settings?

    Also, may I know which monitor you are using?
  6. NevynPA Win User

    Windows 8 Shows old Gamerpic

Thema:

Screenshot of HDR monitor: jxr to png

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