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DIgitalImageProcessingImageSharp/DIgitalImageProcessingImageSharp.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="OpenCvSharp4.Windows" Version="4.11.0.20250507" />
+  </ItemGroup>
+
+</Project>

DIgitalImageProcessingImageSharp/Program.cs

@@ -0,0 +1,40 @@
+using OpenCvSharp;
+using System.Xml.Serialization;
+
+//string filepath = (@"C:\Users\Surface\Downloads\" + @"1682575881230001.png");
+
+int year = 2025;
+bool isLeap1 = DateTime.IsLeapYear(year);
+bool isLeap2 = (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
+bool isLeap3 = year switch
+{
+	_ when year % 400 == 0 => true,
+	_ when year % 100 == 0 => false,
+	_ when year % 4 == 0 => true,
+	_ => false,
+};
+bool isLeap4 = year % 4 == 0 ? (year % 100 == 0 ? (year % 400 == 0 ? true : false) : true) : false;
+bool isLeap5 = year % 4 != 0 ? false : year % 100 != 0 ? true : year % 400 == 0 ? true : false;
+
+Console.WriteLine(isLeap1);
+Console.WriteLine(isLeap2);
+Console.WriteLine(isLeap3);
+Console.WriteLine(isLeap4);
+Console.WriteLine(isLeap5);
+
+string filepath = (@"C:\Users\Surface\Downloads\" + @"sprite-0001.png");
+
+Mat image = Cv2.ImRead(filepath);
+InputArray kernel = InputArray.Create<int>(new int[,] {
+	{ 0, 1, 0 },
+	{ 1, 1, 1 },
+	{ 0, 1, 0 }
+}, MatType.CV_8U);
+Mat dst = new();
+//Cv2.Filter2D(image, dst, image.Depth(), kernel);
+
+Cv2.Dilate(image, dst, kernel);
+
+dst = dst - image;
+
+dst.ImWrite(@"C:\Users\Surface\Downloads\" + @"filtered_opencv.png");

DigitalImageProcessing.sln

@@ -1,10 +1,12 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
-VisualStudioVersion = 17.14.36408.4 d17.14
+VisualStudioVersion = 17.14.36408.4
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DigitalImageProcessing", "DigitalImageProcessing\DigitalImageProcessing.csproj", "{CC16DC64-4AF5-4AA5-83CF-EC6C2C137450}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DIgitalImageProcessingImageSharp", "DIgitalImageProcessingImageSharp\DIgitalImageProcessingImageSharp.csproj", "{D33ECA25-E9B7-4426-B722-C193BC9943A1}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,6 +17,10 @@ Global
 		{CC16DC64-4AF5-4AA5-83CF-EC6C2C137450}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{CC16DC64-4AF5-4AA5-83CF-EC6C2C137450}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{CC16DC64-4AF5-4AA5-83CF-EC6C2C137450}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D33ECA25-E9B7-4426-B722-C193BC9943A1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D33ECA25-E9B7-4426-B722-C193BC9943A1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D33ECA25-E9B7-4426-B722-C193BC9943A1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D33ECA25-E9B7-4426-B722-C193BC9943A1}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

DigitalImageProcessing/Extensions.cs

@@ -71,23 +71,23 @@ namespace DigitalImageProcessing
 			float r = color.Red / 255f;
 			float g = color.Green / 255f;
 			float b = color.Blue / 255f;
-			float min = MathF.Min(r, MathF.Min(g, b));
+			float min = MathF.Min(r, MathF.Min(g, b)); // 最低分量
-			i = (int)(((r + g + b) / 3f) * 255);
+			i = (int)(((r + g + b) / 3f) * 255); // 平均分量
-			if (i == 0)
+			if (i == 0) // 黑色
 			{
 				h = 0;
 				s = 0;
 				return;
 			}
-			s = (int)((1 - (min / (i / 255f))) * 255);
+			s = (int)((1 - (min / (i / 255f))) * 255); // 亮度
-			if (s == 0)
+			if (s == 0) // 黑色*2
 			{
 				h = 0;
 				return;
 			}
-			float numerator = 0.5f * ((r - g) + (r - b));
+			float numerator = 0.5f * ((r - g) + (r - b)); // 分母
-			float denominator = MathF.Sqrt((r - g) * (r - g) + (r - b) * (g - b));
+			float denominator = MathF.Sqrt((r - g) * (r - g) + (r - b) * (g - b)); // 分子
-			float theta = MathF.Acos(numerator / denominator);
+			float theta = MathF.Acos(numerator / denominator); // 色调
 			if (b <= g)
 				h = (int)((theta / (2 * MathF.PI)) * 360);
 			else

DigitalImageProcessing/GLobalTools.cs

@@ -0,0 +1,35 @@
+using SkiaSharp;
+
+namespace DigitalImageProcessing
+{
+	internal static class GLobalTools
+	{
+		public static SKBitmap GetFull(string filepath) => SKBitmap.Decode(filepath);
+		public static SKBitmap GetGray(string filepath)
+		{
+			SKBitmap src = SKBitmap.Decode(filepath);
+			Parallel.For(0, src.Height - 1, (y) =>
+				Parallel.For(0, src.Width - 1, (x) =>
+				{
+					SKColor color = src.GetPixel(x, y);
+					byte avg = (byte)((color.Red + color.Green + color.Blue) / 3);
+					src.SetPixel(x, y, new(avg, avg, avg));
+				})
+			);
+			return src;
+		}
+		public static SKBitmap GetBinary(string filepath)
+		{
+			SKBitmap src = SKBitmap.Decode(filepath);
+			Parallel.For(0, src.Height - 1, (y) =>
+				Parallel.For(0, src.Width - 1, (x) =>
+				{
+					SKColor color = src.GetPixel(x, y);
+					byte bin = (byte)((color.Red + color.Green + color.Blue) / 3 > 128 ? 256 : 0);
+					src.SetPixel(x, y, new(bin, bin, bin));
+				})
+			);
+			return src;
+		}
+	}
+}

DigitalImageProcessing/HSI.cs

@@ -0,0 +1,34 @@
+using SkiaSharp;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DigitalImageProcessing
+{
+	public static class HSI
+	{
+		public static void Run()
+		{
+			string imagepath = @"C:\Users\Surface\Downloads\" + @"1682575881230001.png";
+			SKBitmap bitmap1 = GLobalTools.GetGray(imagepath);
+			Image2D<bool> image1 = new(bitmap1.Width, bitmap1.Height);
+			for (int x = 0; x < bitmap1.Width; x++)
+			{
+				for (int y = 0; y < bitmap1.Height; y++)
+				{
+					SKColor color1 = bitmap1.GetPixel(x, y);
+					color1.ToHsi(out int h, out int s, out int i);
+					SKColor color2 = new SKColor(
+						(byte)(h * 256f / 360f),
+						(byte)(s * 256f / 100f),
+						(byte)(i * 256f / 100f));
+					bitmap1.SetPixel(x, y, color2);
+				}
+			}
+			using FileStream fs = new(@"C:\Users\Surface\Downloads\" + "output_hsi.png", FileMode.Create, FileAccess.Write);
+			bitmap1.Encode(fs, SKEncodedImageFormat.Png, 100);
+		}
+	}
+}

DigitalImageProcessing/MorphologicalOperations.cs

@@ -0,0 +1,60 @@
+using System;
+
+namespace DigitalImageProcessing
+{
+	public static class MorphologicalOperations
+	{
+		public static Image2D<bool> ApplyKernel(Image2D<bool> input, int[,] kernel)
+		{
+			int width = input.Width;
+			int height = input.Height;
+			int kernelWidth = kernel.GetLength(0);
+			int kernelHeight = kernel.GetLength(1);		
+			int kernelCenterX = kernelWidth / 2;
+			int kernelCenterY = kernelHeight / 2;
+
+			Image2D<bool> output = new Image2D<bool>(width, height);
+
+			for (int x = 0; x < width; x++)
+			{
+				for (int y = 0; y < height; y++)
+				{
+					bool match = true;
+
+					for (int kx = 0; kx < kernelWidth; kx++)
+					{
+						for (int ky = 0; ky < kernelHeight; ky++)
+						{
+							int nx = x + kx - kernelCenterX;
+							int ny = y + ky - kernelCenterY;
+
+							if (nx >= 0 && nx < width && ny >= 0 && ny < height)
+							{
+								if (kernel[kx, ky] == 1 && !input[nx, ny])
+								{
+									match = false;
+									break;
+								}
+								else if (kernel[kx, ky] == -1 && input[nx, ny])
+								{
+									match = false;
+									break;
+								}
+							}
+							else if (kernel[kx, ky] == 1)
+							{
+								match = false;
+								break;
+							}
+						}
+						if (!match) break;
+					}
+
+					output[x, y] = match;
+				}
+			}
+
+			return output;
+		}
+	}
+}

DigitalImageProcessing/Program.cs

@@ -1,17 +1,19 @@
 using DigitalImageProcessing;
 using SkiaSharp;
 
-string testImage = @"C:\Users\Surface\Downloads\" + @"1682575881230001.png";
+HSI.Run();
-//Alograms.Steps(@"C:\Users\Surface\Downloads\", @"C:\Users\Surface\Downloads\" + @"1682575881230001.png");
 
-SKBitmap d = Alograms.GetDefaultBitmap(new(1024, 512));
+//string testImage = @"C:\Users\Surface\Downloads\" + @"1682575881230001.png";
+////Alograms.Steps(@"C:\Users\Surface\Downloads\", @"C:\Users\Surface\Downloads\" + @"1682575881230001.png");
 
-var noised = Alograms.Noises(d);
+//SKBitmap d = Alograms.GetDefaultBitmap(new(1024, 512));
 
-using FileStream fs = new(@"C:\Users\Surface\Downloads\" + @"noise.png", FileMode.Create, FileAccess.Write);
+//var noised = Alograms.Noises(d);
-noised.Encode(fs, SKEncodedImageFormat.Png, 100);
 
-var filtered = Alograms.Filt(d);
+//using FileStream fs = new(@"C:\Users\Surface\Downloads\" + @"noise.png", FileMode.Create, FileAccess.Write);
+//noised.Encode(fs, SKEncodedImageFormat.Png, 100);
 
-using FileStream fs2 = new(@"C:\Users\Surface\Downloads\" + @"filtered.png", FileMode.Create, FileAccess.Write);
+//var filtered = Alograms.Filt(d);
-filtered.Encode(fs2, SKEncodedImageFormat.Png, 100);
+
+//using FileStream fs2 = new(@"C:\Users\Surface\Downloads\" + @"filtered.png", FileMode.Create, FileAccess.Write);
+//filtered.Encode(fs2, SKEncodedImageFormat.Png, 100);

DigitalImageProcessing/Shape.cs

@@ -0,0 +1,57 @@
+using SkiaSharp;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DigitalImageProcessing
+{
+	public struct Image2D<T>
+	{
+		private T[,] data;
+		public readonly int Width => data.GetLength(0);
+		public readonly int Height => data.GetLength(1);
+		public readonly T this[int x, int y]
+		{
+			get => data[x, y];
+			set => data[x, y] = value;
+		}
+
+		public Image2D(int width, int height)
+		{
+			data = new T[width, height];
+		}
+	}
+	public static class Shape
+	{
+		public static void Run()
+		{
+			string imagepath = @"C:\Users\Surface\Downloads\" + @"1682575881230001.png";
+			SKBitmap bitmap1 = SKBitmap.Decode(imagepath);
+			Image2D<bool> image1 = new(bitmap1.Width, bitmap1.Height);
+			for (int x = 0; x < bitmap1.Width; x++)
+			{
+				for (int y = 0; y < bitmap1.Height; y++)
+				{
+					SKColor color = bitmap1.GetPixel(x, y);
+					image1[x, y] = color.Red < 128;
+				}
+			}
+
+
+
+			SKBitmap bitmap2 = new SKBitmap(image1.Width, image1.Height);
+			for(int x = 0;x<image1.Width; x++)
+				for(int y=0;y < image1.Height;y++)
+				{
+					if (image1[x, y])
+						bitmap2.SetPixel(x, y, new SKColor(0, 0, 0));
+					else
+						bitmap2.SetPixel(x, y, new SKColor(255, 255, 255));
+				}
+			using FileStream fs = new(@"C:\Users\Surface\Downloads\" + "output.png", FileMode.Create, FileAccess.Write);
+			bitmap2.Encode(fs, SKEncodedImageFormat.Png, 100);
+		}
+	}
+}