Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. QImage blur, sharpen etc.?
Forum Updated to NodeBB v4.3 + New Features

QImage blur, sharpen etc.?

Scheduled Pinned Locked Moved Unsolved General and Desktop
4 Posts 2 Posters 719 Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • P Offline
    P Offline
    Publicnamer
    wrote on last edited by Publicnamer
    #1

    Is there any way to blur, sharpen, edge detect, desaturate, or otherwise perform complex operations on a QImage in a way that would draw upon the native hardware to accelerate it?

    I notice there is nothing like QImage::gaussianBlur(...).

    1 Reply Last reply
    0
    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      Looks like you would be interested by OpenCV GPU's offering.

      Work with it to do the analyses/changes you want and create the QImage once you're done.

      Note that with a bit more details about what you want to implement it will be easier to determine whether there's something suitable in Qt directly for you.

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

      P 1 Reply Last reply
      1
      • SGaistS SGaist

        Hi,

        Looks like you would be interested by OpenCV GPU's offering.

        Work with it to do the analyses/changes you want and create the QImage once you're done.

        Note that with a bit more details about what you want to implement it will be easier to determine whether there's something suitable in Qt directly for you.

        P Offline
        P Offline
        Publicnamer
        wrote on last edited by
        #3

        @SGaist Oh darn, I was hoping Qt has this built-in e.g. that it would use OpenCV if available when Qt itself was compiled.
        As it happens my Linux distro (32-bit Raspbian at the moment) has a broken OpenCV with missing dependencies.

        1 Reply Last reply
        0
        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #4

          It was the other way around, OpenCV used Qt as one of the backend for its highgui module.

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

          1 Reply Last reply
          0

          • Login

          • Login or register to search.
          • First post
            Last post
          0
          • Categories
          • Recent
          • Tags
          • Popular
          • Users
          • Groups
          • Search
          • Get Qt Extensions
          • Unsolved