SuavityImage柔化显示图片效果

namespace SuavityImage
{
public partial class Frm_Main : Form
{
public Frm_Main()
{
InitializeComponent();
}

private void button2_Click(object sender, EventArgs e)
{
//打图像文件
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.Filter = "图像文件(JPeg, Gif, Bmp, etc.)|*.jpg;*.jpeg;*.gif;*.bmp;*.tif; *.tiff; *.png| JPeg 图像文件(*.jpg;*.jpeg)|*.jpg;*.jpeg |GIF 图像文件(*.gif)|*.gif |BMP图像文件(*.bmp)|*.bmp|Tiff图像文件(*.tif;*.tiff)|*.tif;*.tiff|Png图像文件(*.png)| *.png |所有文件(*.*)|*.*";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
Bitmap MyBitmap = new Bitmap(openFileDialog.FileName);
this.pictureBox1.Image = MyBitmap;
}
}

private void button1_Click(object sender, EventArgs e)
{
try
{
int Height = this.pictureBox1.Image.Height;//获取图像高度
int Width = this.pictureBox1.Image.Width;//获取图像宽度
Bitmap bitmap = new Bitmap(Width, Height);//实例化新的位图对象
Bitmap MyBitmap = (Bitmap)this.pictureBox1.Image;//记录原图
Color pixel;//定义一个Color结构
int[] Gauss ={ 1, 2, 1, 2, 4, 2, 1, 2, 1 };//定义高斯模板值
//遍历原图的每个位置
for (int x = 1; x < Width - 1; x )
for (int y = 1; y < Height - 1; y )
{
int r = 0, g = 0, b = 0;//声明3个变量，用来记录R/G/B值
int Index = 0;//声明一个变量，用来记录位置
for (int col = -1; col <= 1; col )
for (int row = -1; row <= 1; row )
{
pixel = MyBitmap.GetPixel(x row, y col);//获取指定点的像素
r = pixel.R * Gauss[Index];//记录R值
g = pixel.G * Gauss[Index];//记录G值
b = pixel.B * Gauss[Index];//记录B值
Index ;
}
r /= 16;//为R重新赋值
g /= 16;//为G重新赋值
b /= 16;//为B重新赋值
//处理颜色值溢出
r = r > 255 ? 255 : r;
r = r < 0 ? 0 : r;
g = g > 255 ? 255 : g;
g = g < 0 ? 0 : g;
b = b > 255 ? 255 : b;
b = b < 0 ? 0 : b;
bitmap.SetPixel(x - 1, y - 1, Color.FromArgb(r, g, b));//重新为指定点赋颜色值
}
this.pictureBox1.Image = bitmap;//显示柔化效果的图像
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
}
}
}