Blur UIImage

blurimage.cs

        public static UIImage WithBlurEffect(this UIImage inputImage, float radius = 15f)
        {
            if (inputImage == null)
            {
                return null;
            }

            var ciImage = new CIImage(inputImage);

            var gaussianBlur = new CIGaussianBlur
            {
                Image = ciImage,
                Radius = radius
            };

            var blurredImage = gaussianBlur.OutputImage;
            var context = CIContext.FromOptions(new CIContextOptions
            {
                UseSoftwareRenderer = true
            });


            var cgImage = context.CreateCGImage(blurredImage, new RectangleF(0, 0, (float)inputImage.Size.Width, (float)inputImage.Size.Height));
            var outputImage = UIImage.FromImage(cgImage);

            ciImage.Dispose();
            ciImage = null;

            gaussianBlur.Dispose();
            gaussianBlur = null;

            blurredImage.Dispose();
            blurredImage = null;

            cgImage.Dispose();
            cgImage = null;

            return outputImage;
        }