Opencv_13_随机数与随机颜色

1)  void Random_drawing(Mat& image);

2)

void ColorInvert::Random_drawing(Mat& image)
{
    Mat canvas = Mat::zeros(Size(512, 512), CV_8UC3);
    int w = canvas.cols;
    int h = canvas.rows;

    RNG rng(12345);
    while (true)
    {
        int c = waitKey(10);
        if (c == 27)
        {
            break;
        }
        int x1 = rng.uniform(0, w);
        int y1 = rng.uniform(0, h);
        int x2 = rng.uniform(0, w);
        int y2 = rng.uniform(0, h);

        int b = rng.uniform(0, 255);
        int g = rng.uniform(0, 255);
        int r = rng.uniform(0, 255);

        line(canvas, Point(x1, y1), Point(x2, y2), Scalar(b, g, r), 1, LINE_AA, 0);
        imshow("随机绘制演示", canvas);
    }
}