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opencv on mbed

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WinRT support

WinRT support
[High-level GUI]

This figure explains new functionality implemented with WinRT GUI. More...

This figure explains new functionality implemented with WinRT GUI.

The new GUI provides an Image control, and a slider panel. Slider panel holds trackbars attached to it.

Sliders are attached below the image control. Every new slider is added below the previous one.

See below the example used to generate the figure: 

        void sample_app::MainPage::ShowWindow()
        {
            static cv::String windowName("sample");
            cv::winrt_initContainer(this->cvContainer);
            cv::namedWindow(windowName); // not required

            cv::Mat image = cv::imread("Assets/sample.jpg");
            cv::Mat converted = cv::Mat(image.rows, image.cols, CV_8UC4);
            cv::cvtColor(image, converted, COLOR_BGR2BGRA);
            cv::imshow(windowName, converted); // this will create window if it hasn't been created before

            int state = 42;
            cv::TrackbarCallback callback = [](int pos, void* userdata)
            {
                if (pos == 0) {
                    cv::destroyWindow(windowName);
                }
            };
            cv::TrackbarCallback callbackTwin = [](int pos, void* userdata)
            {
                if (pos >= 70) {
                    cv::destroyAllWindows();
                }
            };
            cv::createTrackbar("Sample trackbar", windowName, &state, 100, callback);
            cv::createTrackbar("Twin brother", windowName, &state, 100, callbackTwin);
        }
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