C# - 影像處理圖片銳化、對比延伸、直方圖均化

練習：
銳化：Sharpen()

對比延伸：ContrastStretch()

直方圖均化：HistogramEqualization()

##ReadMore##

Step1. 檔案 → 新增專案 → Windows Form 應用程式 → 拉物件 Form1.cs[設計] → 撰寫 Form1.cs

Step2. 方案總管 → 參考 → 右鍵加入參考 → 瀏灠(預設路徑) C:\Program Files (x86)\AForge.NET\Framework\Release → 加入參考

• AForge.Imaging.dll 
• AForge.Imaging.Formats.dll

Step3. Windows Form 拉入需要工具：

• pictureBox × 2
• button × 4
• openFileDialog × 1

Step4. Coding

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using AForge.Imaging;
using AForge.Imaging.Formats;
using AForge.Imaging.Filters;

namespace TMV0
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        Bitmap imgone;

        //Sharpen
        private void button2_Click(object sender, EventArgs e)
        {
            Bitmap img;
            Sharpen filter = new Sharpen();
            img = filter.Apply(imgone);
            pictureBox2.Image = img;
        }

        //Contrast Stretch
        private void button3_Click(object sender, EventArgs e)
        {
            Bitmap img;
            ContrastStretch filter = new ContrastStretch();
            img = filter.Apply(imgone);
            pictureBox2.Image = img;
        }

        //Load Image
        private void button1_Click(object sender, EventArgs e)
        {
            openFileDialog1.Filter = "所有檔案(*.*)|*.*";
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                imgone =
                ImageDecoder.DecodeFromFile(openFileDialog1.FileName);
                pictureBox1.Image = imgone;
            }
        }

        //Histogram Equalization
        private void button4_Click(object sender, EventArgs e)
        {
            Bitmap img;
            HistogramEqualization filter = new HistogramEqualization();
            img = filter.Apply(imgone);
            pictureBox2.Image = img;
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }
    }
}