public void PropertyMaxPixelValue()
 {
     using (var refImage = Image("lenna.png"))
         using (var psnr = QualityPSNR.Create(refImage))
         {
             const double value = 123.456;
             psnr.MaxPixelValue = value;
             Assert.Equal(value, psnr.MaxPixelValue, 6);
         }
 }
        public void Compute()
        {
            using (var refImage = Image("lenna.png"))
                using (var targetImage = new Mat())
                    using (var psnr = QualityPSNR.Create(refImage))
                    {
                        Cv2.GaussianBlur(refImage, targetImage, new Size(5, 5), 15);

                        var value = psnr.Compute(targetImage);
                        Assert.Equal(28.813382, value[0], 6);
                        Assert.Equal(28.171064, value[1], 6);
                        Assert.Equal(30.828286, value[2], 6);
                    }
        }