李伟
141 lines
4.5 KiB
C#
141 lines
4.5 KiB
C#
// ============================================================================
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// Copyright © 2026 Hexagon Technology Center GmbH. All Rights Reserved.
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// 文件名: SharpenProcessor.cs
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// 描述: 锐化算子，用于增强图像边缘和细节
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// 功能:
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// - 拉普拉斯锐化
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// - 非锐化掩蔽（Unsharp Masking）
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// - 可调节锐化强度
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// - 支持多种锐化核
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// 算法: 拉普拉斯算子、非锐化掩蔽
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// 作者: 李伟 wei.lw.li@hexagon.com
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// ============================================================================
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using Emgu.CV;
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using Emgu.CV.CvEnum;
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using Emgu.CV.Structure;
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using XP.ImageProcessing.Core;
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using Serilog;
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namespace XP.ImageProcessing.Processors;
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/// <summary>
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/// 锐化算子
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/// </summary>
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public class SharpenProcessor : ImageProcessorBase
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{
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private static readonly ILogger _logger = Log.ForContext<SharpenProcessor>();
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public SharpenProcessor()
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{
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Name = LocalizationHelper.GetString("SharpenProcessor_Name");
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Description = LocalizationHelper.GetString("SharpenProcessor_Description");
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}
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protected override void InitializeParameters()
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{
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Parameters.Add("Method", new ProcessorParameter(
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"Method",
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LocalizationHelper.GetString("SharpenProcessor_Method"),
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typeof(string),
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"Laplacian",
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null,
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null,
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LocalizationHelper.GetString("SharpenProcessor_Method_Desc"),
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new string[] { "Laplacian", "UnsharpMask" }));
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Parameters.Add("Strength", new ProcessorParameter(
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"Strength",
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LocalizationHelper.GetString("SharpenProcessor_Strength"),
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typeof(double),
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1.0,
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0.1,
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5.0,
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LocalizationHelper.GetString("SharpenProcessor_Strength_Desc")));
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Parameters.Add("KernelSize", new ProcessorParameter(
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"KernelSize",
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LocalizationHelper.GetString("SharpenProcessor_KernelSize"),
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typeof(int),
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3,
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1,
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15,
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LocalizationHelper.GetString("SharpenProcessor_KernelSize_Desc")));
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_logger.Debug("InitializeParameters");
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}
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public override Image<Gray, byte> Process(Image<Gray, byte> inputImage)
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{
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string method = GetParameter<string>("Method");
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double strength = GetParameter<double>("Strength");
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int kernelSize = GetParameter<int>("KernelSize");
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if (kernelSize % 2 == 0) kernelSize++;
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Image<Gray, byte> result;
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if (method == "UnsharpMask")
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{
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result = ApplyUnsharpMask(inputImage, kernelSize, strength);
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}
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else // Laplacian
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{
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result = ApplyLaplacianSharpening(inputImage, strength);
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}
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_logger.Debug("Process: Method = {Method}, Strength = {Strength}, KernelSize = {KernelSize}",
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method, strength, kernelSize);
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return result;
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}
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private Image<Gray, byte> ApplyLaplacianSharpening(Image<Gray, byte> inputImage, double strength)
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{
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// 计算拉普拉斯算子
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var laplacian = new Image<Gray, float>(inputImage.Size);
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CvInvoke.Laplacian(inputImage, laplacian, DepthType.Cv32F, 1);
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// 转换为字节类型
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var laplacianByte = laplacian.Convert<Gray, byte>();
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// 将拉普拉斯结果加到原图上进行锐化
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var floatImage = inputImage.Convert<Gray, float>();
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var sharpened = floatImage + laplacian * strength;
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// 限制范围并转换回字节类型
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var result = sharpened.Convert<Gray, byte>();
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laplacian.Dispose();
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laplacianByte.Dispose();
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floatImage.Dispose();
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sharpened.Dispose();
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return result;
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}
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private Image<Gray, byte> ApplyUnsharpMask(Image<Gray, byte> inputImage, int kernelSize, double strength)
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{
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// 创建模糊图像
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var blurred = new Image<Gray, byte>(inputImage.Size);
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CvInvoke.GaussianBlur(inputImage, blurred,
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new System.Drawing.Size(kernelSize, kernelSize), 0);
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// 计算差异（细节）
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var floatInput = inputImage.Convert<Gray, float>();
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var floatBlurred = blurred.Convert<Gray, float>();
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var detail = floatInput - floatBlurred;
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// 将细节加回原图
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var sharpened = floatInput + detail * strength;
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// 转换回字节类型
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var result = sharpened.Convert<Gray, byte>();
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blurred.Dispose();
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floatInput.Dispose();
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floatBlurred.Dispose();
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detail.Dispose();
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sharpened.Dispose();
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return result;
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}
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} |