Even if I don't use, ie, if I comment the lines where NamedWindow, ShowImage and WaitKey appear it freezes too.
*Joseph Soares Alcântara* Engenharia da Computação - 8º semestre Universidade Federal do Ceará - UFC Sobral - Ceará +--------------------------------------------------------------------------+ .| - °v°...A liberdade não pode ser comprada e sim | .| -/(_)\..conquistada. Conquiste a sua também use | .| - ^^ G N U / L I N U X | +--------------------------------------------------------------------------+ 2012/2/21 John Stowers <john.stowers.li...@gmail.com> > GTK is not threadsafe. > > If opencv shows a gtk mainwindow in cv.ShowImage, and that occurs in a > different thread to the one running gtk_main, then unpredictable > crashes and odd behaviour will result. > > Please check the pygtk FAQ for how to use threading and pygtk. > > I suggest displaying the image yourself in by getting the data from > the IPL image and copying it into a GtkImage. Or be much more careful > with which operations you do in which thread (i.e. cv.ShowImage, > cv.WaitKey) > > John > > 2012/2/21 Joseph S. Alcântara <josephser...@gmail.com>: > > Hi, Thank you for response to me. > > > > See, can I sand you my program to you see what I am making? I've used > > Thread, but seems like is not working like I want. > > > > You must run from main.py > > > > Joseph Soares Alcântara > > Engenharia da Computação - 8º semestre > > Universidade Federal do Ceará - UFC > > Sobral - Ceará > > > > > +--------------------------------------------------------------------------+ > > .| - °v°...A liberdade não pode ser comprada e sim | > > .| -/(_)\..conquistada. Conquiste a sua também use | > > .| - ^^ G N U / L I N U X | > > > +--------------------------------------------------------------------------+ > > > > > > > > 2012/2/19 Hart's Antler <bhart...@yahoo.com> > >> > >> Hi Joseph, > >> I got GTK and OpenCV working together using threads. This example works > >> with CPython2, CPython3 and PyPy, see my blog post. > >> http://pyppet.blogspot.com/2011/12/rpythonic-044.html > >> > >> -brett- > >> > >> ________________________________ > >> From: Joseph S. Alcântara <josephser...@gmail.com> > >> To: pygtk@daa.com.au > >> Sent: Sunday, February 19, 2012 9:46 AM > >> Subject: [pygtk] PyGTK + OpenCV > >> > >> hi, I'm writing a application that uses pygtk and opencv. and I had a > >> problem. When I run the program it shows a gui. So far so good. But, > when I > >> click in a menuitem, it should call a functino that runs the famous > routine > >> to show a video from webcam. But in this moment, the app freezes. I have > >> tried to use thread, but opencv gui runs just after I call > gtk.main_quit(). > >> What could solve my problem? Thanks. > >> > >> Estou escrevendo um programa em python, usando pygtk e opencv. Quando > rodo > >> o programa, aparece uma janela e até aí, beleza. Mas quando eu clico em > um > >> menuitem, ele deve chamar uma função que roda a famosa rotina que exibe > um > >> vídeo a partir da webcam. No entanto, neste momento, o programa trava. > >> Então, eu tentei usar Thread, mas a parte do opencv só roda depois que > eu > >> fecho a janela, chamando gtk.main_quit(). O que poderia ser? Obrigado > desde > >> já. > >> > >> Joseph Soares Alcântara > >> Engenharia da Computação - 8º semestre > >> Universidade Federal do Ceará - UFC > >> Sobral - Ceará > >> > >> > >> > +--------------------------------------------------------------------------+ > >> .| - °v°...A liberdade não pode ser comprada e sim | > >> .| -/(_)\..conquistada. Conquiste a sua também use | > >> .| - ^^ G N U / L I N U X | > >> > >> > +--------------------------------------------------------------------------+ > >> > >> > >> _______________________________________________ > >> pygtk mailing list pygtk@daa.com.au > >> http://www.daa.com.au/mailman/listinfo/pygtk > >> Read the PyGTK FAQ: http://faq.pygtk.org/ > >> > > > > > > _______________________________________________ > > pygtk mailing list pygtk@daa.com.au > > http://www.daa.com.au/mailman/listinfo/pygtk > > Read the PyGTK FAQ: http://faq.pygtk.org/ >
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