QImage in QGraphicsScene is pixelated when zooming in



  • I created a simple custom QGraphicsScene in which user can zoom in and out by keeping pressed Ctrl key and moving the mouse wheel up and down.
    I have to add QImages to my QGraphicsScene. To achieve that, I first convert them to QPixmap with the function QPixmap::fromImage().
    However those pixmaps are really pixelated if I zoom in. Is there a way to create vectorial images from QImage and render them to the scene?


  • Qt Champions 2017

    hi
    As far as I know there is no build in raster to vector conversion.
    Also many images are not really good for it.

    Im wonder if QGraphicsScene is scaling images with best quality.
    http://stackoverflow.com/questions/22652491/qt-resize-image-with-best-quality



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