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Qt Widget to display big image & update quickly

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  • D Offline
    D Offline
    Dariusz
    wrote on last edited by
    #1

    Hey

    I'm building a buffer to display some data I'm processing. The data size/buffer can vary from 200x200 to 20x20k size. I'm trying to figure out how can I display these pixels rather quickly. From my tests creating every 50ms/1s a 10k pixmap class feels a bit heavy. I tried using some qml widgets and video to treat it as frames, that worked a bit faster but maybe there is a better way? Ideally I'd like to pass an array of data to a widget and then call update() on it every x time to have it re-read data or just update the changed values perhaps? Not sure... does Qt offer any solution for that?

    Thanks!

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      What hardware are you targeting ?
      When you say 10k do you mean 10000x10000 ?

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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