The OpenCV library is one of the most referenced libraries in the area of Computer Vision, being widely used in the fields of Image and Video Processing, Object Recognition and Robotics. It is developed in C ++, being open source and multiplatform. Because it has complete portability for mobile, it is possible to use OpenCV for Android and iOS applications. The idea of this talk is to explore the integration of mobile applications made in QML and C ++ together with OpenCV. Some applications will be demonstrated, showing the compatibility between structures inherent to Qt and OpenCV (e.g. Mat and QImage), in addition to demonstrating the integration between GUIs in QML and processing with OpenCV.