reading qt + opencv source code

hi! i've managed to let qt and opencv run with threads, and i'm quite proud about it.
but there are some problems and uncertainties i have and i think i can learn and clarify a lot reading the source of some qt + opencv application and see how other people make some kind of decisions.
but i didn't find a lot in the net.. i'm wondering if someone can suggest me some opensource project that is using massively opencv.

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