QImage in QGraphicsScene is pixelated when zooming in

[alogim]

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?

[mrjj]

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