Hi all, Some time ago, I wrote a little image processing tool which worked on numpy arrays. To display them in the gui, I used a procedure similar to the following demo code: from PyQt4.QtGui import * import scipy, ImageQt, sys
app = QApplication(sys.argv) l = scipy.lena() p = QLabel() q = QPixmap.fromImage(ImageQt.ImageQt(scipy.misc.toimage(l))) p.setPixmap(q) p.show() app.exec_() following the conversion chain: ndarray l --> PIL image --> ImageQt object -->QPixmap q This used to work on my kubuntu 9.10 machine, but now that I run it on my new machine running fedora 13 with kde 4.4.4, it won't display the images any more. The window appears, the QLabel that should contain the image has the right size, but where the image should be it stays white. Any ideas on what's causing this? When I couldn't find a cause for this behaviour, I started looking for alternatives. One solution turned out to be to feed the ndarray data into a QImage constructor, and bypass all of the conversion functions gathered from different libraries. Much more elegant, but that made me run into a different problem: my images are 8-bit grayscale images, but the QImage constructor has no such format available. It has 32 bit RBG(A) images, 8-bit indexed color images, and 1-bit mono, but no 8-bit grayscale. I could of course put 3 identical color images in an RGB image, but that seems a bit inelegant. Any good solutions for this? -- Alex Borghgraef _______________________________________________ PyQt mailing list [email protected] http://www.riverbankcomputing.com/mailman/listinfo/pyqt
