Hi,
I built opencv with QT support since the character set of putText() is too limited for my needs (need French accents and German umlaute).
When I use AddText() with a fontQT, i get an error, since cvAddText() of window_QT.cpp expects guiMainThread to be set. However, I only do image computations and add text, so I don't want to show the image. Followingly, I do not need a NamedWindow which would set guiMainThread.
Is there a way to use addText() on images without setting guiMainThread aka displaying them?