public static Image <Bgr, byte> FastGuidedFilterEnchacement(Image <Bgr, byte> image)
{
Image <Bgr, byte> result;
var bmp = image.Bitmap;
var fastGuidedFilter = new FastGuidedFilter
{
KernelSize = 16,
Epsilon = 0.16f,
SubSamplingRatio = 0.25f,
OverlayImage = (Bitmap)bmp.Clone()
};
var guidedImage = fastGuidedFilter.Apply(bmp);
var subtracted = new AForge.Imaging.Filters.Subtract(guidedImage).Apply(fastGuidedFilter.OverlayImage);
guidedImage.Dispose();
//var mul = 100;
//var Multiply = FastGuidedFilter.GetFilledImage(
// subtracted.Width, subtracted.Height,
// subtracted.PixelFormat, Color.FromArgb(mul, mul, mul));
//new Multiply(Multiply).ApplyInPlace(subtracted);
//Multiply.Dispose();
new AForge.Imaging.Filters.Add(subtracted).ApplyInPlace(fastGuidedFilter.OverlayImage);
subtracted.Dispose();
fastGuidedFilter.OverlayImage.Dispose();
result = new Image <Bgr, byte>(fastGuidedFilter.OverlayImage);
return(result);
}
private void button2_Click(object sender, EventArgs e)
{
_elapsedTime.Restart();
using (var bmp = AForge.Imaging.Image.Convert8bppTo16bpp((Bitmap)pictureBox1.Image))
{
var fastGuidedFilter = new FastGuidedFilter
{
KernelSize = 8,
Epsilon = 0.02f,
SubSamplingRatio = 0.25f,
OverlayImage = (Bitmap)bmp.Clone()
};
fastGuidedFilter.ApplyInPlace(bmp);
fastGuidedFilter.OverlayImage.Dispose();
pictureBox2.Image?.Dispose();
pictureBox2.Image = AForge.Imaging.Image.Convert16bppTo8bpp(bmp);
}
_elapsedTime.Stop();
Text = $"{_elapsedTime.Elapsed.Milliseconds} (ms)";
}
// On Filters->Texture
private void fastGuidedFilterFiltersItem_Click(object sender, EventArgs e)
{
ClearCurrentImage();
// Spreading pixels values from 0 to 65535 instead of byte values for less loosing data when applying the filter.
// Of course, we could use the source image in 8-bit (easiest and fastest way but slightly losing data).
using (var bmp = Accord.Imaging.Image.Convert8bppTo16bpp(sourceImage))
{
var fastGuidedFilter = new FastGuidedFilter
{
KernelSize = 8,
Epsilon = 0.02f,
SubSamplingRatio = 0.25f,
OverlayImage = (Bitmap)bmp.Clone()
};
// apply filter
fastGuidedFilter.ApplyInPlace(bmp);
fastGuidedFilter.OverlayImage.Dispose();
if (pictureBox.Image != null)
{
pictureBox.Image.Dispose();
}
// display filtered image
pictureBox.Image = Accord.Imaging.Image.Convert16bppTo8bpp(bmp);
}
}
public static Bitmap FastGuidedFilterEnchacement(Bitmap bmp)
{
var fastGuidedFilter = new FastGuidedFilter
{
KernelSize = 16,
Epsilon = 0.16f,
SubSamplingRatio = 0.25f,
OverlayImage = (Bitmap)bmp.Clone()
};
var guidedImage = fastGuidedFilter.Apply(bmp);
var subtracted = new Subtract(guidedImage).Apply(fastGuidedFilter.OverlayImage);
guidedImage.Dispose();
//var mul = 100;
//var Multiply = FastGuidedFilter.GetFilledImage(
// subtracted.Width, subtracted.Height,
// subtracted.PixelFormat, Color.FromArgb(mul, mul, mul));
//new Multiply(Multiply).ApplyInPlace(subtracted);
//Multiply.Dispose();
new Add(subtracted).ApplyInPlace(fastGuidedFilter.OverlayImage);
subtracted.Dispose();
return(AForge.Imaging.Image.Convert16bppTo8bpp(fastGuidedFilter.OverlayImage));
}
public void ApplyTest_bw()
{
Bitmap image = Accord.Imaging.Image.Clone(Properties.Resources.lena512);
Bitmap overlay = Accord.Imaging.Image.Clone(Properties.Resources.lena512);
Assert.AreEqual(image.PixelFormat, PixelFormat.Format8bppIndexed);
var fg = new FastGuidedFilter(overlay);
// Apply the filter
Bitmap result = fg.Apply(image);
// ImageBox.Show(result);
Assert.IsNotNull(result);
}
// Use method from forked Accord v.3.0.2 repository that uses AForge.Net
// https://github.com/hzawary/CSharpDemoFastGuidedFilter
public static Bitmap FastGuidedFilter(Bitmap bmp)
{
var fastGuidedFilter = new FastGuidedFilter
{
KernelSize = 8,
Epsilon = 0.02f,
SubSamplingRatio = 0.25f,
OverlayImage = (Bitmap)bmp.Clone()
};
fastGuidedFilter.ApplyInPlace(bmp);
fastGuidedFilter.OverlayImage.Dispose();
return(AForge.Imaging.Image.Convert16bppTo8bpp(bmp));
}
public void ApplyTest_bw()
{
Bitmap image = Accord.Imaging.Image.FromFile(Path.Combine(basePath, "lena512.bmp"));
Bitmap overlay = Accord.Imaging.Image.FromFile(Path.Combine(basePath, "lena512.bmp"));
Assert.AreEqual(image.PixelFormat, PixelFormat.Format8bppIndexed);
var fg = new FastGuidedFilter(overlay);
// Apply the filter
Bitmap result = fg.Apply(image);
// ImageBox.Show(result);
Assert.IsNotNull(result);
}
public void ApplyTest_color32()
{
Bitmap image = Accord.Imaging.Image.Clone(Properties.Resources.lena_color);
Bitmap overlay = Accord.Imaging.Image.Clone(Properties.Resources.lena_color);
image.MakeTransparent();
overlay.MakeTransparent();
Assert.AreEqual(image.PixelFormat, PixelFormat.Format32bppArgb);
var fg = new FastGuidedFilter(overlay);
// Apply the filter
Bitmap result = fg.Apply(image);
// ImageBox.Show(result);
Assert.IsNotNull(result);
}
public void ApplyTest_color32()
{
Bitmap image = Accord.Imaging.Image.FromFile(Path.Combine(basePath, "lena_color.jpg"));
Bitmap overlay = Accord.Imaging.Image.FromFile(Path.Combine(basePath, "lena_color.jpg"));
image.MakeTransparent();
overlay.MakeTransparent();
Assert.AreEqual(image.PixelFormat, PixelFormat.Format32bppArgb);
var fg = new FastGuidedFilter(overlay);
// Apply the filter
Bitmap result = fg.Apply(image);
// ImageBox.Show(result);
Assert.IsNotNull(result);
}
private void button3_Click(object sender, EventArgs e)
{
button2_Click(sender, e);
_elapsedTime.Restart();
using (var bmp = AForge.Imaging.Image.Convert8bppTo16bpp((Bitmap)pictureBox2.Image))
{
var fastGuidedFilter = new FastGuidedFilter
{
KernelSize = 16,
Epsilon = 0.16f,
SubSamplingRatio = 0.25f,
OverlayImage = (Bitmap)bmp.Clone()
};
var guidedImage = fastGuidedFilter.Apply(bmp);
var subtracted = new Subtract(guidedImage).Apply(fastGuidedFilter.OverlayImage);
guidedImage.Dispose();
//var mul = 100;
//var Multiply = FastGuidedFilter.GetFilledImage(
// subtracted.Width, subtracted.Height,
// subtracted.PixelFormat, Color.FromArgb(mul, mul, mul));
//new Multiply(Multiply).ApplyInPlace(subtracted);
//Multiply.Dispose();
new Add(subtracted).ApplyInPlace(fastGuidedFilter.OverlayImage);
subtracted.Dispose();
pictureBox2.Image?.Dispose();
pictureBox2.Image = AForge.Imaging.Image.Convert16bppTo8bpp(fastGuidedFilter.OverlayImage);
fastGuidedFilter.OverlayImage.Dispose();
}
_elapsedTime.Stop();
Text = $"{_elapsedTime.Elapsed.Milliseconds} (ms)";
}
