using Emgu.CV; using Emgu.CV.CvEnum; using Emgu.CV.Structure; // Load the image Mat image = new Mat("image.png", ImreadModes.Color); // Apply blur with kernel size 5x5 and sigma 1.5 CvInvoke.Blur(image, image, new Size(5, 5), new Point(-1, -1), BorderType.Default, new MCvScalar(1.5)); // Save the result image.Save("blurred_image.png");In this example, we load an image and apply a blur filter to it using a 5x5 kernel size and sigma value of 1.5. The result is then saved as a new image. The package library used in this example is Emgu CV, which is a C# wrapper around OpenCV.