public void Niblack(LocalBinarizationMethods method)
{
using var src = Image("mandrill.png", ImreadModes.Grayscale);
using var dst = new Mat();
CvXImgProc.NiblackThreshold(src, dst, 255, ThresholdTypes.Binary, 5, 0.5, method);
ShowImagesWhenDebugMode(dst);
}
public override void RunTest()
{
using var src = Cv2.ImRead(ImagePath.Binarization, ImreadModes.Grayscale);
using var niblack = new Mat();
using var sauvola = new Mat();
using var nick = new Mat();
int kernelSize = 51;
var sw = new Stopwatch();
sw.Start();
CvXImgProc.NiblackThreshold(src, niblack, 255, ThresholdTypes.Binary, kernelSize, -0.2, LocalBinarizationMethods.Niblack);
sw.Stop();
Console.WriteLine($"Niblack {sw.ElapsedMilliseconds} ms");
sw.Restart();
CvXImgProc.NiblackThreshold(src, sauvola, 255, ThresholdTypes.Binary, kernelSize, 0.1, LocalBinarizationMethods.Sauvola);
sw.Stop();
Console.WriteLine($"Sauvola {sw.ElapsedMilliseconds} ms");
sw.Restart();
CvXImgProc.NiblackThreshold(src, nick, 255, ThresholdTypes.Binary, kernelSize, -0.14, LocalBinarizationMethods.Nick);
sw.Stop();
Console.WriteLine($"Nick {sw.ElapsedMilliseconds} ms");
using (new Window("src", src, WindowFlags.AutoSize))
using (new Window("Niblack", niblack, WindowFlags.AutoSize))
using (new Window("Sauvola", sauvola, WindowFlags.AutoSize))
using (new Window("Nick", nick, WindowFlags.AutoSize))
{
Cv2.WaitKey();
}
}
public void Run()
{
using var src = Cv2.ImRead(@"G:\其他项目\YuZe.ColoredPencil\YuZe.ColoredPencil\P10424-172645.jpg", ImreadModes.Grayscale);
using var niblack = new Mat();
using var sauvola = new Mat();
using var bernsen = new Mat();
using var nick = new Mat();
int kernelSize = 51;
var sw = new Stopwatch();
sw.Start();
CvXImgProc.NiblackThreshold(src, niblack, 255, ThresholdTypes.Binary, kernelSize, -0.2, LocalBinarizationMethods.Niblack);
sw.Stop();
Console.WriteLine($"Niblack {sw.ElapsedMilliseconds} ms");
sw.Restart();
CvXImgProc.NiblackThreshold(src, sauvola, 255, ThresholdTypes.Binary, kernelSize, 0.1, LocalBinarizationMethods.Sauvola);
sw.Stop();
Console.WriteLine($"Sauvola {sw.ElapsedMilliseconds} ms");
sw.Restart();
CvXImgProc.NiblackThreshold(src, nick, 255, ThresholdTypes.Binary, kernelSize, -0.14, LocalBinarizationMethods.Nick);
sw.Stop();
Console.WriteLine($"Nick {sw.ElapsedMilliseconds} ms");
using (new Window("src", src, WindowFlags.Normal))
using (new Window("Niblack", niblack, WindowFlags.Normal))
using (new Window("Sauvola", sauvola, WindowFlags.Normal))
using (new Window("Nick", nick, WindowFlags.Normal))
{
Cv2.WaitKey();
}
}
public void Niblack()
{
using (var src = Image("lenna.png", ImreadModes.GrayScale))
using (var dst = new Mat())
{
CvXImgProc.NiblackThreshold(src, dst, 255, ThresholdTypes.Binary, 5, 0.5);
ShowImagesWhenDebugMode(dst);
}
}
public void Sauvola()
{
foreach (var r in new double[] { 16, 32, 64, 128 })
{
using var src = Image("mandrill.png", ImreadModes.Grayscale);
using var dst = new Mat();
CvXImgProc.NiblackThreshold(
src, dst,
255,
ThresholdTypes.Binary,
5, 0.5,
LocalBinarizationMethods.Sauvola,
r);
ShowImagesWhenDebugMode(new[] { dst }, new[] { $"r={r}" });
}
}
public void Run()
{
using var src = Cv2.ImRead(FilePath.Image.Binarization, ImreadModes.Grayscale);
using var niblack = new Mat();
using var sauvola = new Mat();
using var bernsen = new Mat();
using var nick = new Mat();
int kernelSize = 51;
var sw = new Stopwatch();
sw.Start();
CvXImgProc.NiblackThreshold(src, niblack, 255, ThresholdTypes.Binary, kernelSize, -0.2, LocalBinarizationMethods.Niblack);
sw.Stop();
Console.WriteLine($"Niblack {sw.ElapsedMilliseconds} ms");
sw.Restart();
CvXImgProc.NiblackThreshold(src, sauvola, 255, ThresholdTypes.Binary, kernelSize, 0.1, LocalBinarizationMethods.Sauvola);
sw.Stop();
Console.WriteLine($"Sauvola {sw.ElapsedMilliseconds} ms");
sw.Restart();
Binarizer.Bernsen(src, bernsen, kernelSize, 50, 200);
sw.Stop();
Console.WriteLine($"Bernsen {sw.ElapsedMilliseconds} ms");
sw.Restart();
CvXImgProc.NiblackThreshold(src, nick, 255, ThresholdTypes.Binary, kernelSize, -0.14, LocalBinarizationMethods.Nick);
sw.Stop();
Console.WriteLine($"Nick {sw.ElapsedMilliseconds} ms");
using (new Window("src", WindowMode.AutoSize, src))
using (new Window("Niblack", WindowMode.AutoSize, niblack))
using (new Window("Sauvola", WindowMode.AutoSize, sauvola))
using (new Window("Bernsen", WindowMode.AutoSize, bernsen))
using (new Window("Nick", WindowMode.AutoSize, nick))
{
Cv2.WaitKey();
}
}