C#数字图像处理（摘录）
namespace ImageProcessor
{
class RGBImage
{
private Bitmap bitmap;
public RGBImage(Bitmap bitmap)
{
this.bitmap = bitmap;
}
private int GetWidth()
{
return this.bitmap.Size.Width;
}
private int GetHeight()
{
return this.bitmap.Size.Height;
}
private Color RuleRGBValue(int r,int g,int b)
{
Color c = new Color();
if (r > 255) r = 255;
if (r < 0) r = 0;
if (g > 255) g = 255;
if (g < 0) g = 0;
if (b > 255) b = 255;
if (b < 0) b = 0;
c = Color.FromArgb(r, g, b);
return c;
}
/// <summary>
/// 单色蓝图片
/// </summary>
/// <returns></returns>
public Bitmap ToBlueImage()
{
Color c = new Color();
Color c1 = new Color();
Bitmap rtBitmap = new Bitmap(bitmap.Size.Width, bitmap.Size.Height);
for (int i = 0; i < bitmap.Size.Width; i++)
{
for (int j = 0; j < bitmap.Size.Height; j++)
{
c = bitmap.GetPixel(i, j);
c1 = Color.FromArgb(c.B, c.B, c.B);
rtBitmap.SetPixel(i, j, c1);
}
}
return rtBitmap;
}
/// <summary>
/// 单色绿图片
/// </summary>
/// <returns></returns>
public Bitmap ToGreenImage()
{
Color c = new Color();
Color c1 = new Color();
Bitmap rtBitmap = new Bitmap(bitmap.Size.Width, bitmap.Size.Height);
for (int i = 0; i < bitmap.Size.Width; i++)
{
for (int j = 0; j < bitmap.Size.Height; j++)
{
c = bitmap.GetPixel(i, j);
c1 = Color.FromArgb(c.R, c.R, c.R);
rtBitmap.SetPixel(i, j, c1);
}
}
return rtBitmap;
}
/// <summary>
/// 单色红图片
/// </summary>
/// <returns></returns>
public Bitmap ToRedImage()
{
Color c = new Color();
Color c1 = new Color();
Bitmap rtBitmap = new Bitmap(bitmap.Size.Width, bitmap.Size.Height);
for (int i = 0; i < bitmap.Size.Width; i++)
{
for (int j = 0; j < bitmap.Size.Height; j++)
{
c = bitmap.GetPixel(i, j);
c1 = Color.FromArgb(255-c.B, 255-c.B, 255-c.B);
rtBitmap.SetPixel(i, j, c1);
}
}
return rtBitmap;
}
/// <summary>
/// 单亮度图片
/// </summary>
/// <returns></returns>
public Bitmap ToBrightnessImage()
{
Bitmap rtBitmap = new Bitmap(bitmap.Size.Width, bitmap.Size.Height);
Color c = new Color();
Color c1 = new Color();
int y;
for (int i = 0; i < bitmap.Size.Width; i++)
{
for (int j = 0; j < bitmap.Size.Height; j++)
{
c = bitmap.GetPixel(i, j);
y = (int)(0.31 * c.R + 0.59 * c.G + 0.11 * c.B);
c1 = RuleRGBValue(y, y, y);
rtBitmap.SetPixel(i, j, c1);
}
}
return rtBitmap;
}
/// <summary>
/// 灰度图片
/// </summary>
/// <param name="n"></param>
/// <returns></returns>
public Bitmap ToGrayImage(int n)
{
Bitmap rtBitmap = new Bitmap(bitmap.Size.Width, bitmap.Size.Height);
Color c = new Color();
Color c1 = new Color();
int y;
for (int i = 0; i < bitmap.Size.Width; i++)
{
for (int j = 0; j < bitmap.Size.Height; j++)
{
c = bitmap.GetPixel(i, j);
y = (int)((c.R + c.G + c.B)/n);
c1 = RuleRGBValue(y, y, y);
rtBitmap.SetPixel(i, j, c1);
}
}
return rtBitmap;
}
/// <summary>
/// 逆反图片
/// </summary>
/// <returns></returns>
public Bitmap ToInverseImage()
{
Bitmap rtBitmap = new Bitmap(bitmap.Size.Width, bitmap.Size.Height);
Color c = new Color();
Color c1 = new Color();
for (int i = 0; i < bitmap.Size.Width; i++)
{
for (int j = 0; j < bitmap.Size.Height; j++)
{
c = bitmap.GetPixel(i, j);
c1 = Color.FromArgb(255-c.R, 255-c.G, 255-c.B);
rtBitmap.SetPixel(i, j, c1);
}
}
return rtBitmap;
}
/// <summary>
/// 平滑图片
/// </summary>
/// <param name="nn"></param>
/// <returns></returns>
public Bitmap ToSmoothImage(int nn)
{
Bitmap rtBitmap = new Bitmap(bitmap.Size.Width, bitmap.Size.Height);
Color c = new Color();
Color c1 = new Color();
int mm = (nn - 1) / 2;
for (int i = mm; i < bitmap.Size.Width - mm; i++)
{
for (int j = mm; j < bitmap.Size.Height - mm; j++)
{
int r = 0, g = 0, b = 0;
for (int m = i - mm; m <= i + mm; m++)
{
for (int n = j - mm; n <= j + mm; n++)
{
c = bitmap.GetPixel(m, n);
r = r + c.R;
g = g + c.G;
b = b + c.B;
}
}
r = r / (nn*nn);
g = g / (nn * nn);
b = b / (nn * nn);
c1 = RuleRGBValue(r, g, b);
rtBitmap.SetPixel(i, j, c1);
}
}
return rtBitmap;
}
/// <summary>
/// 霓虹图片
/// </summary>
/// <returns></returns>
public Bitmap ToNeonImage()
{
Bitmap rtBitmap = new Bitmap(bitmap.Size.Width, bitmap.Size.Height);
Color c = new Color();
Color c1 = new Color();
Color c2 = new Color();
Color c3 = new Color();
int r1, r2, g1, g2, b1, b2;
int r,g,b;
for (int i = 0; i < bitmap.Size.Width-1; i++)
{
for (int j = 0; j < bitmap.Size.Height-1; j++)
{
c1 = bitmap.GetPixel(i, j);
c2 = bitmap.GetPixel(i + 1, j);
c3 = bitmap.GetPixel(i, j + 1);
r1 = (c1.R - c2.R) ^ 2;
g1 = (c1.G - c2.G) ^ 2;
b1 = (c1.B - c2.B) ^ 2;
r2 = (c1.R - c3.R) ^ 2;
g2 = (c1.G - c3.G) ^ 2;
b2 = (c1.B - c3.B) ^ 2;
r = (int)(2 * Math.Sqrt(r1 +r2));
g = (int)(2 * Math.Sqrt(g1 + g2));
b = (int)(2 * Math.Sqrt(b1 + b2));
c = RuleRGBValue(r, g, b);
rtBitmap.SetPixel(i, j, c);
}
}
return rtBitmap;
}
/// <summary>
/// 锐化图片
/// </summary>
/// <param name="n"></param>
/// <returns></returns>
public Bitmap ToSharpeningImage(double n)
{
Bitmap rtBitmap = new Bitmap(bitmap.Size.Width, bitmap.Size.Height);
Color c = new Color();
Color c1 = new Color();
Color c2 = new Color();
int r, g, b;
for (int i = 1; i < bitmap.Size.Width; i++)
{
for (int j = 1; j < bitmap.Size.Height; j++)
{
c1 = bitmap.GetPixel(i, j);
c2 = bitmap.GetPixel(i-1,j-1);
r = (int)(c1.R + n * Math.Abs(c1.R - c2.R));
g = (int)(c1.G + n * Math.Abs(c1.G - c2.G));
b = (int)(c1.B + n * Math.Abs(c1.B - c2.B));
c = RuleRGBValue(r,g,b);
rtBitmap.SetPixel(i, j, c);
}
}
return rtBitmap;
}
/// <summary>
/// 浮雕图片
/// </summary>
/// <param name="n"></param>
/// <returns></returns>
public Bitmap ToReliefImage(int n)
{
if (n < 0) n = 0;
if (n > 255) n = 255;
Bitmap rtBitmap = new Bitmap(bitmap.Size.Width, bitmap.Size.Height);
Color c = new Color();
Color c1 = new Color();
Color c2 = new Color();
int r, g, b;
for (int i = 1; i < bitmap.Size.Width; i++)
{
for (int j = 0; j < bitmap.Size.Height; j++)
{
c1 = bitmap.GetPixel(i, j);
c2 = bitmap.GetPixel(i - 1, j);
r = c1.R - c2.R + n;
g = c1.G - c2.G + n;
b = c1.B - c2.B + n;
c = RuleRGBValue(r, g, b);
rtBitmap.SetPixel(i, j, c);
}
}
return rtBitmap;
}
/// <summary>
/// 镶嵌图片
/// </summary>
/// <param name="nn"></param>
/// <returns></returns>
public Bitmap ToMosaicImage(int nn)
{
if (nn < 0) nn = 3;
int mm = (nn - 1) / 2;
Bitmap rtBitmap = new Bitmap(bitmap.Size.Width, bitmap.Size.Height);
Color c = new Color();
Color c1 = new Color();
for (int i = mm; i < bitmap.Size.Width - mm; i++)
{
for (int j = mm; j < bitmap.Size.Height - mm; j++)
{
int r = 0, g = 0, b = 0;
for (int m = i - mm; m <= i + mm; m++)
{
for (int n = j - mm; n <= j + mm; n++)
{
c = bitmap.GetPixel(m, n);
r = r + c.R;
g = g + c.G;
b = b + c.B;
}
}
r = r / (nn*nn);
g = g / (nn * nn);
b = b / (nn * nn);
c1 = RuleRGBValue(r, g, b);
for (int m = i - mm; m <= i + mm; m++)
{
for (int n = j - mm; n <= j + mm; n++)
{
rtBitmap.SetPixel(m, n, c1);
}
}
}
}
return rtBitmap;
}
/// <summary>
/// 平移图片
/// </summary>
/// <param name="n"></param>
/// <returns></returns>
public Bitmap TranslationImage(int n)
{
if (n < 0|| n>255) n = 20;
Bitmap rtBitmap=new Bitmap (bitmap.Width,bitmap.Height);
Color c=new Color ();
for(int i=0;i<bitmap.Size.Width-n;i++)
{
for(int j=0;j<bitmap.Size.Height-n;j++)
{
c=bitmap.GetPixel(i,j);
rtBitmap.SetPixel(i + n, j + n, c);
}
}
return rtBitmap;
}
/// <summary>
///
/// </summary>
/// <param name="n"></param>
/// <returns></returns>
public Bitmap ResizeImage(double n)
{
Bitmap rtBitmap = new Bitmap((int)(bitmap.Size.Width*n),(int)(bitmap.Size.Height*n));
Color c = new Color();
int x, y;
for (int i = 0; i < bitmap.Size.Width; i++)
{
for (int j = 0; j < bitmap.Size.Height; j++)
{
c = bitmap.GetPixel(i, j);
x = Convert.ToInt16(i * n);
y = Convert.ToInt16(j * n);
if (x < 0) x = 0;
if (x >= rtBitmap.Size.Width) x = rtBitmap.Size.Width-1;
if (y < 0) y = 0;
if (y >= rtBitmap.Size.Height) y = rtBitmap.Size.Height-1;
rtBitmap.SetPixel(x,y, c);
}
}
return rtBitmap;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public Bitmap LRFlipImage()
{
Bitmap rtBitmap =new Bitmap (bitmap.Width,bitmap.Height );
Color c = new Color();
for (int i = 0; i < bitmap.Width; i++)
{
for (int j = 0; j < bitmap.Height; j++)
{
c = bitmap.GetPixel(i, j);
rtBitmap.SetPixel(bitmap.Width - 1 - i, j, c);
}
}
return rtBitmap;
}
public Bitmap UDFlipImage()
{
Bitmap rtBitmap = new Bitmap(bitmap.Width, bitmap.Height);
Color c = new Color();
for (int i = 0; i < bitmap.Width; i++)
{
for (int j = 0; j < bitmap.Height; j++)
{
c = bitmap.GetPixel(i, j);
rtBitmap.SetPixel(i, bitmap.Height-1-j, c);
}
}
return rtBitmap;
}
public Bitmap RotateImage(double n)
{
if (n < 0) n = 1;
if (n > 360) n = 360;
double nn = 180 / n;
Bitmap rtBitmap = new Bitmap(bitmap.Width,bitmap.Height);
int x,y;
double pi = Math.PI;
for (int i = 0; i < bitmap.Width; i++)
{
for (int j = 0; j < bitmap.Height; j++)
{
x =(int)( i * Math.Cos(pi / nn) - j * Math.Sin(pi / nn));
y=(int)(i*Math.Sin(pi/6)+j*Math.Cos(pi/6));
if(x>0&& x<bitmap.Width&&y>0&&y<bitmap.Height)
rtBitmap.SetPixel(x, y, bitmap.GetPixel(i, j));
}
}
return rtBitmap;
}
public Bitmap HistImage()
{
RGBImage rgb = new RGBImage(this.bitmap);
Bitmap tempBitmap = rgb.ToGrayImage(3);
Color c =Color.FromA#ffffff;
int[] times = new int[256];
for (int i = 0; i < tempBitmap.Width; i++)
{
for (int j = 0; j < tempBitmap.Height; j++)
{
c = tempBitmap.GetPixel(i, j);
times[c.R]++;
}
}
int max = times[0];
for (int i = 1; i < 256; i++)
{
if (times[i] > max) max = times[i];
}
for (int i = 0; i < 256; i++)
{
times[i] = Convert.ToInt16(((double)(times[i]) /(double)( max))*100);
}
Bitmap rtBitmap = new Bitmap(256, 110);
for (int i = 0; i < rtBitmap.Width; i++)
{
for (int j = 0; j < rtBitmap.Height; j++)
{
for (int m = 0; m <= times[i]; m++)
{
rtBitmap.SetPixel(i, m, c);
}
}
}
RGBImage rimage = new RGBImage(rtBitmap);
Bitmap s=rimage.UDFlipImage();
return s;
}
}
}
private void btnToBlueImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
Bitmap bBitmap = rgbBitmap.ToBlueImage();
ShowImage showImage = new ShowImage(bBitmap,"单色蓝图片");
showImage.Show();
}
private void btnToGreenImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
Bitmap bBitmap = rgbBitmap.ToGreenImage();
ShowImage showImage = new ShowImage(bBitmap, "单色绿图片");
showImage.Show();
}
private void btnToRedImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
Bitmap bBitmap = rgbBitmap.ToRedImage();
ShowImage showImage = new ShowImage(bBitmap, "单色红图片");
showImage.Show();
}
private void btnToBrightnessImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
Bitmap bitmap = rgbBitmap.ToBrightnessImage();
ShowImage s = new ShowImage(bitmap, "单亮度图片");
s.Show();
}
private void btnToGrayImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
InputDialog inputDialog = new InputDialog("请输入采用的模板大小：", "模板大小","3");
inputDialog.ShowDialog();
if (inputDialog.result != "")
{
int n = Convert.ToInt16(inputDialog.result);
Bitmap bitmap = rgbBitmap.ToGrayImage(n);
ShowImage s = new ShowImage(bitmap, "灰度图片");
s.Show();
}
else
{
MessageBox.Show("对不起，你的输入参数错误!");
}
}
private void btnInverseImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
Bitmap bitmap = rgbBitmap.ToInverseImage();
ShowImage s = new ShowImage(bitmap, "逆反图片");
s.Show();
}
private void btnSmoothImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
InputDialog inputDialog = new InputDialog("请输入采用的模板大小：", "模板大小", "3");
inputDialog.ShowDialog();
if (inputDialog.result != "")
{
int n = Convert.ToInt16(inputDialog.result);
Bitmap bitmap = rgbBitmap.ToSmoothImage(n);
ShowImage s = new ShowImage(bitmap, "平滑图片");
s.Show();
}
else
{
MessageBox.Show("对不起，你的输入参数错误!");
}
}
private void btnNeonImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
Bitmap bitmap = rgbBitmap.ToNeonImage();
ShowImage s = new ShowImage(bitmap, "霓虹图片");
s.Show();
}
private void btnSharpenImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
InputDialog inputDialog = new InputDialog("请输入锐化系数：", "输入参数", "0.25");
inputDialog.ShowDialog();
if (inputDialog.result != "")
{
double n = Convert.ToDouble(inputDialog.result);
Bitmap bitmap = rgbBitmap.ToSharpeningImage(n);
ShowImage s = new ShowImage(bitmap, "锐化图片");
s.Show();
}
else
{
MessageBox.Show("对不起，你的输入参数错误!");
}
}
private void btnReliefImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
InputDialog nn=new InputDialog ("输入浮雕值：","输入参数","128");
nn.ShowDialog();
if (nn.result != "")
{
int n = Convert.ToInt16(nn.result);
Bitmap bitmap = rgbBitmap.ToReliefImage(n);
ShowImage s = new ShowImage(bitmap, "浮雕图片");
s.Show();
}
else
{
MessageBox.Show("对不起，你的输入参数错误!");
}
}
private void btnMosaicImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
InputDialog nn=new InputDialog ("输入模板大小：","输入参数","3");
nn.ShowDialog();
if (nn.result != "")
{
int n = Convert.ToInt16(nn.result);
Bitmap bitmap = rgbBitmap.ToMosaicImage(n);
ShowImage s = new ShowImage(bitmap, "镶嵌图片");
s.Show();
}
else
{
MessageBox.Show("对不起，你的输入参数错误!");
}
}
private void btnTranslationImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
InputDialog nn=new InputDialog ("输入平移的像素数：","输入参数","20");
nn.ShowDialog();
if (nn.result != "")
{
int n = Convert.ToInt16(nn.result);
Bitmap bitmap = rgbBitmap.TranslationImage(n);
ShowImage s = new ShowImage(bitmap, "平移图片");
s.Show();
}
else
{
MessageBox.Show("对不起，你的输入参数错误!");
}
}
private void btnLargerImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
InputDialog nn=new InputDialog ("输入放大倍数：","输入参数","2");
nn.ShowDialog();
if (nn.result != "")
{
double n = Convert.ToDouble(nn.result);
Bitmap bitmap = rgbBitmap.ResizeImage(n);
ShowImage s = new ShowImage(bitmap, "放大图片");
s.Show();
}
else
{
MessageBox.Show("对不起，你的输入参数错误!");
}
}
private void btnSmallerImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
InputDialog nn=new InputDialog ("输入缩小倍数：","输入参数","0.5");
nn.ShowDialog();
if (nn.result != "")
{
double n = Convert.ToDouble(nn.result);
Bitmap bitmap = rgbBitmap.ResizeImage(n);
ShowImage s = new ShowImage(bitmap, "缩小图片");
s.Show();
}
else
{
MessageBox.Show("对不起，你的输入参数错误!");
}
}
private void btnLRFlipImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
Bitmap bitmap = rgbBitmap.LRFlipImage();
ShowImage s = new ShowImage(bitmap, "左右翻转");
s.Show();
}
private void btnUDFlipImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
Bitmap bitmap = rgbBitmap.UDFlipImage();
ShowImage s = new ShowImage(bitmap, "上下翻转");
s.Show();
}
private void ImageProcessor_Load(object sender, EventArgs e)
{
this.MaximumSize = new Size(this.Width, this.Height);
this.MinimumSize = this.MaximumSize;
}
private void btnRotateImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
InputDialog nn=new InputDialog ("输入旋转度数：","输入参数","30");
nn.ShowDialog();
if (nn.result != "")
{
double n = Convert.ToDouble(nn.result);
Bitmap bitmap = rgbBitmap.RotateImage(n);
ShowImage s = new ShowImage(bitmap, "旋转图片");
s.Show();
}
else
{
MessageBox.Show("对不起，你的输入参数错误!");
}
}
private void btnHistImage_Click(object sender, EventArgs e)
{
RGBImage rgbBitmap = new RGBImage(bmp);
Bitmap bitmap = rgbBitmap.HistImage();
ShowImage s = new ShowImage(bitmap, "直方图");
s.Show();
}
