private void btn_Wiener_Click(object sender, EventArgs e)
{
var initialImage = (Bitmap)Image.FromFile(openFileDialog1.FileName);
var filteredImage = WienerFilter.Filter(initialImage);
pictureBox2.Image = filteredImage;
pictureBox2.SizeMode = PictureBoxSizeMode.StretchImage;
}
public void TestWienerFilteringNoNoise()
{
var filter = new WienerFilter(3, 0.1);
var input = new[] { 5, 4, 6, 2, 1f };
var expected = new[] { 4.95714286f, 4.15f, 5.925f, 2.02142857f, 1 };
var filtered = filter.ApplyTo(new DiscreteSignal(1, input));
Assert.That(filtered.Samples, Is.EqualTo(expected).Within(1e-5));
}
public void TestWienerFilteringBigNoise()
{
var filter = new WienerFilter(3, 1000);
var input = new[] { 5, 4, 6, 2, 1f };
var expected = new[] { 3, 5, 4, 3, 1f };
var filtered = filter.ApplyTo(new DiscreteSignal(1, input));
Assert.That(filtered.Samples, Is.EqualTo(expected).Within(1e-10));
}
private void btn_Wiener_Click(object sender, EventArgs e)
{
var sw = new Stopwatch();
var initialImage = (Bitmap)pictureBox1.Image;
var greyImage = ImageHelper.ToGray(initialImage);
pictureBox1.Image = greyImage;
var brokenImage = new Bitmap(greyImage);
switch (Filter)
{
case ImageHelper.Filter.Gauss:
brokenImage = GaussianFilter.Blur(greyImage, kernelSize);
break;
case ImageHelper.Filter.Sharpen:
brokenImage = SharpenFilter.Sharpen(greyImage, kernelSize);
break;
case ImageHelper.Filter.MotionLeftToRight:
brokenImage = MotionFilter.Motion(greyImage, kernelSize, Direction.LeftToRight);
break;
case ImageHelper.Filter.MotionRightToLeft:
brokenImage = MotionFilter.Motion(greyImage, kernelSize, Direction.RightToLeft);
break;
default:
break;
}
pictureBox2.Image = brokenImage;
var coreImage = ImageHelper.GetCoreImage(ImageHelper.ToGray(brokenImage), Filter);
pictureBox3.Image = coreImage;
sw.Start();
var reconstructedImage = WienerFilter.Filter(ImageHelper.ToGray(brokenImage), Filter);
pictureBox4.Image = reconstructedImage;
sw.Stop();
MessageBox.Show($"{ImageHelper.GetPSNR(greyImage, reconstructedImage)}");
//MessageBox.Show(sw.Elapsed.TotalSeconds.ToString());
}