///出处不详 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Drawing.Text; using System.Drawing.Drawing2D; using System.Drawing.Imaging; using System.Windows.Forms;namespace MengYu.Image { public class ImageClass { /// <summary> /// 将图片转换成黑白色效果 /// </summary> /// <param name="bmp">Bitmap 对象</param> /// <param name="picBox">PictureBox 对象</param> public static void HeiBaiSeImage(Bitmap bmp, PictureBox picBox) { //以黑白效果显示图像 Bitmap oldBitmap; Bitmap newBitmap=null; try { int Height = bmp.Height; int Width = bmp.Width; newBitmap = new Bitmap(Width, Height); oldBitmap = bmp; Color pixel; for (int x = 0; x < Width; x++) for (int y = 0; y < Height; y++) { pixel = oldBitmap.GetPixel(x, y); int r, g, b, Result = 0; r = pixel.R; g = pixel.G; b = pixel.B; //实例程序以加权平均值法产生黑白图像 int iType = 2; switch (iType) { case 0://平均值法 Result = ((r + g + b) / 3); break; case 1://最大值法 Result = r > g ? r : g; Result = Result > b ? Result : b; break; case 2://加权平均值法 Result = ((int)(0.7 * r) + (int)(0.2 * g) + (int)(0.1 * b)); break; } newBitmap.SetPixel(x, y, Color.FromArgb(Result, Result, Result)); }
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;namespace WindowsFormsApplication4
{
[Flags]
public enum AnimationType
{
AW_HOR_POSITIVE = 0x0001,//从左向右显示
AW_HOR_NEGATIVE = 0x0002,//从右向左显示
AW_VER_POSITIVE = 0x0004,//从上到下显示
AW_VER_NEGATIVE = 0x0008,//从下到上显示
AW_CENTER = 0x0010,//从中间向四周
AW_HIDE = 0x10000,
AW_ACTIVATE = 0x20000,//普通显示
AW_SLIDE = 0x40000,
AW_BLEND = 0x80000,//透明渐变显示效果
} public partial class Form1 : Form
{
[DllImport("user32.dll")]
public static extern bool AnimateWindow(IntPtr hwnd, uint dwTime, AnimationType dwFlags); private PictureBox pictureBox1, pictureBox2;
private List<Image> girls = new List<Image>();
private Timer timer = new Timer();
private int index = 0; public Form1()
{
InitializeComponent(); this.WindowState = FormWindowState.Maximized;
this.FormBorderStyle = FormBorderStyle.None;
this.BackColor = Color.Black;
this.DoubleBuffered = true; pictureBox1 = new PictureBox();
pictureBox1.Location = new Point(200, 100);
pictureBox1.Size = new System.Drawing.Size(640, 480);
pictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;
pictureBox1.Visible = false;
this.Controls.Add(pictureBox1); pictureBox2 = new PictureBox();
pictureBox2.Location = new Point(400, 300);
pictureBox2.Size = new System.Drawing.Size(640, 480);
pictureBox2.SizeMode = PictureBoxSizeMode.AutoSize;
pictureBox1.Visible = false;
this.Controls.Add(pictureBox2); using (OpenFileDialog dlg = new OpenFileDialog())
{
dlg.Multiselect = true;
dlg.Filter = "jpeg files(*.jpg)|*.jpg";
if (dlg.ShowDialog() == DialogResult.OK)
{
foreach (string file in dlg.FileNames)
{
girls.Add(Image.FromFile(file));
}
}
} timer.Interval = 3000;
timer.Tick += new EventHandler(timer_Tick);
timer.Enabled = true;
} void timer_Tick(object sender, EventArgs e)
{
if (girls.Count == 0)
{ return; }
Image currentGirl = girls[index++];
pictureBox2.Image = currentGirl;
AnimateWindow(pictureBox2.Handle, 1000,
GetRandomAnimationType());
AnimateWindow(pictureBox1.Handle, 1000, AnimationType.AW_HIDE);
pictureBox1.Visible = false; PictureBox temp = pictureBox1;
pictureBox1 = pictureBox2;
pictureBox2 = temp; if (index >= girls.Count)
{
index = 0;
}
} private Random random = new Random();
private AnimationType[] animationTypes = null;
private AnimationType GetRandomAnimationType()
{
if (animationTypes == null)
{
animationTypes = Enum.GetValues(typeof(AnimationType))
as AnimationType[];
} return animationTypes[random.Next(0, animationTypes.Length - 1)];
} protected override void OnKeyDown(KeyEventArgs e)
{
if (e.KeyCode == Keys.Escape)
{
timer.Enabled = false;
foreach (Image girl in girls)
{
girl.Dispose();
}
this.Close();
}
base.OnKeyDown(e);
}
}
}
两个GDI对象，先在一个对象上画图，画好后再输出到GDI
划分多个区域每次只更新一格，这样视觉效果也可以
http://beta.codeproject.com/KB/list/imagelistview.aspx
http://www.codeproject.com/KB/dotnet/multiImageViewer.aspx
书本就有很多。
winform做这个东西还是很得心应手的。
///出处不详
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Drawing.Text;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Windows.Forms;namespace MengYu.Image
{
public class ImageClass
{
/// <summary>
/// 将图片转换成黑白色效果
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void HeiBaiSeImage(Bitmap bmp, PictureBox picBox)
{
//以黑白效果显示图像
Bitmap oldBitmap;
Bitmap newBitmap=null;
try
{
int Height = bmp.Height;
int Width = bmp.Width;
newBitmap = new Bitmap(Width, Height);
oldBitmap = bmp;
Color pixel;
for (int x = 0; x < Width; x++)
for (int y = 0; y < Height; y++)
{
pixel = oldBitmap.GetPixel(x, y);
int r, g, b, Result = 0;
r = pixel.R;
g = pixel.G;
b = pixel.B;
//实例程序以加权平均值法产生黑白图像
int iType = 2;
switch (iType)
{
case 0://平均值法
Result = ((r + g + b) / 3);
break;
case 1://最大值法
Result = r > g ? r : g;
Result = Result > b ? Result : b;
break;
case 2://加权平均值法
Result = ((int)(0.7 * r) + (int)(0.2 * g) + (int)(0.1 * b));
break;
}
newBitmap.SetPixel(x, y, Color.FromArgb(Result, Result, Result));
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
picBox.Image = newBitmap;
}
/// <summary>
/// 雾化效果
/// </summary>
/// <param name="bmp"></param>
/// <param name="picBox"></param>
public static void WuHuaImage(Bitmap bmp, PictureBox picBox)
{
//雾化效果
Bitmap oldBitmap;
Bitmap newBitmap = null;
try
{
int Height = bmp.Height;
int Width = bmp.Width;
newBitmap = new Bitmap(Width, Height);
oldBitmap = bmp;
Color pixel;
for (int x = 1; x < Width - 1; x++)
for (int y = 1; y < Height - 1; y++)
{
System.Random MyRandom = new Random();
int k = MyRandom.Next(123456);
//像素块大小
int dx = x + k % 19;
int dy = y + k % 19;
if (dx >= Width)
dx = Width - 1;
if (dy >= Height)
dy = Height - 1;
pixel = oldBitmap.GetPixel(dx, dy);
newBitmap.SetPixel(x, y, pixel);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
picBox.Image= newBitmap;
}
}
/// 锐化效果
/// </summary>
/// <param name="bmp"></param>
/// <param name="picBox"></param>
public static void RuiHuaImage(Bitmap bmp, PictureBox picBox)
{
Bitmap oldBitmap;
Bitmap newBitmap = null;
try
{
int Height = bmp.Height;
int Width = bmp.Width;
newBitmap = new Bitmap(Width, Height);
oldBitmap = bmp;
Color pixel;
//拉普拉斯模板
int[] Laplacian ={ -1, -1, -1, -1, 9, -1, -1, -1, -1 };
for (int x = 1; x < Width - 1; x++)
for (int y = 1; y < Height - 1; y++)
{
int r = 0, g = 0, b = 0;
int Index = 0;
for (int col = -1; col <= 1; col++)
for (int row = -1; row <= 1; row++)
{
pixel = oldBitmap.GetPixel(x + row, y + col); r += pixel.R * Laplacian[Index];
g += pixel.G * Laplacian[Index];
b += pixel.B * Laplacian[Index];
Index++;
}
//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; newBitmap.SetPixel(x - 1, y - 1, Color.FromArgb(r, g, b));
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
picBox.Image = newBitmap;
} /// <summary>
///底片效果
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void DiPianImage(Bitmap bmp, PictureBox picBox)
{
Bitmap oldBitmap;
Bitmap newBitmap = null;
try
{
int Height = bmp.Height;
int Width = bmp.Width;
newBitmap = new Bitmap(Width, Height);
oldBitmap = bmp;
Color pixel;
for (int x = 1; x < Width; x++)
{
for (int y = 1; y < Height; y++)
{
int r, g, b;
pixel = oldBitmap.GetPixel(x, y);
r = 255 - pixel.R;
g = 255 - pixel.G;
b = 255 - pixel.B;
newBitmap.SetPixel(x, y, Color.FromArgb(r, g, b));
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
picBox.Image = newBitmap;
}
/// <summary>
///浮雕效果
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void FuDiaoImage(Bitmap bmp, PictureBox picBox)
{
Bitmap oldBitmap;
Bitmap newBitmap = null;
try
{
int Height = bmp.Height;
int Width = bmp.Width;
newBitmap = new Bitmap(Width, Height);
oldBitmap = bmp;
Color pixel1, pixel2;
for (int x = 0; x < Width - 1; x++)
{
for (int y = 0; y < Height - 1; y++)
{
int r = 0, g = 0, b = 0;
pixel1 = oldBitmap.GetPixel(x, y);
pixel2 = oldBitmap.GetPixel(x + 1, y + 1);
r = Math.Abs(pixel1.R - pixel2.R + 128);
g = Math.Abs(pixel1.G - pixel2.G + 128);
b = Math.Abs(pixel1.B - pixel2.B + 128);
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;
newBitmap.SetPixel(x, y, Color.FromArgb(r, g, b));
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
picBox.Image = newBitmap;
}
/// <summary>
/// 日光照射效果
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void RiGuangZhaoSheImage(Bitmap bmp,PictureBox picBox)
{
//以光照效果显示图像
Graphics MyGraphics = picBox.CreateGraphics();
MyGraphics.Clear(Color.White);
Bitmap MyBmp = new Bitmap(bmp, bmp.Width, bmp.Height);
int MyWidth = MyBmp.Width;
int MyHeight = MyBmp.Height;
Bitmap MyImage = MyBmp.Clone(new RectangleF(0, 0, MyWidth, MyHeight), System.Drawing.Imaging.PixelFormat.DontCare);
int A = MyWidth / 2;
int B = MyHeight / 2;
//MyCenter图片中心点，发亮此值会让强光中心发生偏移
Point MyCenter = new Point(MyWidth / 2, MyHeight / 2);
//R强光照射面的半径，即”光晕”
int R = Math.Min(MyWidth / 2, MyHeight / 2);
for (int i = MyWidth - 1; i >= 1; i--)
{
for (int j = MyHeight - 1; j >= 1; j--)
{
float MyLength = (float)Math.Sqrt(Math.Pow((i - MyCenter.X), 2) + Math.Pow((j - MyCenter.Y), 2));
//如果像素位于”光晕”之内
if (MyLength < R)
{
Color MyColor = MyImage.GetPixel(i, j);
int r, g, b;
//220亮度增加常量，该值越大，光亮度越强
float MyPixel = 220.0f * (1.0f - MyLength / R);
r = MyColor.R + (int)MyPixel;
r = Math.Max(0, Math.Min(r, 255));
g = MyColor.G + (int)MyPixel;
g = Math.Max(0, Math.Min(g, 255));
b = MyColor.B + (int)MyPixel;
b = Math.Max(0, Math.Min(b, 255));
//将增亮后的像素值回写到位图
Color MyNewColor = Color.FromArgb(255, r, g, b);
MyImage.SetPixel(i, j, MyNewColor);
}
}
//重新绘制图片
MyGraphics.DrawImage(MyImage, new Rectangle(0, 0, MyWidth, MyHeight));
}
}
/// <summary>
/// 油画效果
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void YouHuaImage(Bitmap bmp, PictureBox picBox)
{
//以油画效果显示图像
Graphics g = picBox.CreateGraphics();
int width = bmp.Width;
int height = bmp.Height;
RectangleF rect = new RectangleF(0, 0, width, height);
Bitmap MyBitmap = bmp;
Bitmap img = MyBitmap.Clone(rect, System.Drawing.Imaging.PixelFormat.DontCare);
//产生随机数序列
Random rnd = new Random();
//取不同的值决定油画效果的不同程度
int iModel = 2;
int i = width - iModel;
while (i > 1)
{
int j = height - iModel;
while (j > 1)
{
int iPos = rnd.Next(100000) % iModel;
//将该点的RGB值设置成附近iModel点之内的任一点
Color color = img.GetPixel(i + iPos, j + iPos);
img.SetPixel(i, j, color);
j = j - 1;
}
i = i - 1;
}
//重新绘制图像
g.Clear(Color.White);
g.DrawImage(img, new Rectangle(0, 0, width, height));
}
/// 垂直百叶窗
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void BaiYeChuang1(Bitmap bmp, PictureBox picBox)
{
//垂直百叶窗显示图像
try
{
Bitmap MyBitmap =(Bitmap) bmp.Clone();
int dw = MyBitmap.Width / 30;
int dh = MyBitmap.Height;
Graphics g = picBox.CreateGraphics();
g.Clear(Color.Gray);
Point[] MyPoint = new Point[30];
for (int x = 0; x < 30; x++)
{
MyPoint[x].Y = 0;
MyPoint[x].X = x * dw;
}
Bitmap bitmap = new Bitmap(MyBitmap.Width, MyBitmap.Height);
for (int i = 0; i < dw; i++)
{
for (int j = 0; j < 30; j++)
{
for (int k = 0; k < dh; k++)
{
bitmap.SetPixel(MyPoint[j].X + i, MyPoint[j].Y + k, MyBitmap.GetPixel(MyPoint[j].X + i, MyPoint[j].Y + k));
}
}
picBox.Refresh();
picBox.Image = bitmap;
System.Threading.Thread.Sleep(120);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
} }
/// <summary>
/// 水平百叶窗
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void BaiYeChuang2(Bitmap bmp, PictureBox picBox)
{
//水平百叶窗显示图像
try
{
Bitmap MyBitmap = (Bitmap)bmp.Clone();
int dh = MyBitmap.Height / 20;
int dw = MyBitmap.Width;
Graphics g = picBox.CreateGraphics();
g.Clear(Color.Gray);
Point[] MyPoint = new Point[20];
for (int y = 0; y < 20; y++)
{
MyPoint[y].X = 0;
MyPoint[y].Y = y * dh;
}
Bitmap bitmap = new Bitmap(MyBitmap.Width, MyBitmap.Height);
for (int i = 0; i < dh; i++)
{
for (int j = 0; j < 20; j++)
{
for (int k = 0; k < dw; k++)
{
bitmap.SetPixel(MyPoint[j].X + k, MyPoint[j].Y + i, MyBitmap.GetPixel(MyPoint[j].X + k, MyPoint[j].Y + i));
}
}
picBox.Refresh();
picBox.Image = bitmap;
System.Threading.Thread.Sleep(100);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
}
//继续
/// <summary>
/// 左右拉伸效果
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void LaShen_ZuoDaoYou(Bitmap bmp, PictureBox picBox)
{
//以从左向右拉伸方式显示图像
try
{
int width = bmp.Width; //图像宽度
int height = bmp.Height; //图像高度
Graphics g = picBox.CreateGraphics();
g.Clear(Color.Gray); //初始为全灰色
for (int x = 1; x <= width; x++)
{
Bitmap bitmap = bmp.Clone(new Rectangle(0, 0, x, height), System.Drawing.Imaging.PixelFormat.Format24bppRgb);
g.DrawImage(bitmap, 0, 0);
System.Threading.Thread.Sleep(10);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
}
/// <summary>
/// 淡入效果
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void DanRu(Bitmap bmp, PictureBox picBox)
{
//淡入显示图像
try
{
Graphics g = picBox.CreateGraphics();
g.Clear(Color.Gray);
int width = bmp.Width;
int height = bmp.Height;
ImageAttributes attributes = new ImageAttributes();
ColorMatrix matrix = new ColorMatrix();
//创建淡入颜色矩阵
matrix.Matrix00 = (float)0.0;
matrix.Matrix01 = (float)0.0;
matrix.Matrix02 = (float)0.0;
matrix.Matrix03 = (float)0.0;
matrix.Matrix04 = (float)0.0;
matrix.Matrix10 = (float)0.0;
matrix.Matrix11 = (float)0.0;
matrix.Matrix12 = (float)0.0;
matrix.Matrix13 = (float)0.0;
matrix.Matrix14 = (float)0.0;
matrix.Matrix20 = (float)0.0;
matrix.Matrix21 = (float)0.0;
matrix.Matrix22 = (float)0.0;
matrix.Matrix23 = (float)0.0;
matrix.Matrix24 = (float)0.0;
matrix.Matrix30 = (float)0.0;
matrix.Matrix31 = (float)0.0;
matrix.Matrix32 = (float)0.0;
matrix.Matrix33 = (float)0.0;
matrix.Matrix34 = (float)0.0;
matrix.Matrix40 = (float)0.0;
matrix.Matrix41 = (float)0.0;
matrix.Matrix42 = (float)0.0;
matrix.Matrix43 = (float)0.0;
matrix.Matrix44 = (float)0.0;
matrix.Matrix33 = (float)1.0;
matrix.Matrix44 = (float)1.0;
//从0到1进行修改色彩变换矩阵主对角线上的数值
//使三种基准色的饱和度渐增
Single count = (float)0.0;
while (count < 1.0)
{
matrix.Matrix00 = count;
matrix.Matrix11 = count;
matrix.Matrix22 = count;
matrix.Matrix33 = count;
attributes.SetColorMatrix(matrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
g.DrawImage(bmp, new Rectangle(0, 0, width, height), 0, 0, width, height, GraphicsUnit.Pixel, attributes);
System.Threading.Thread.Sleep(200);
count = (float)(count + 0.02);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
} /// <summary>
/// 逆时针旋转
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void XuanZhuan90(Bitmap bmp, PictureBox picBox)
{
try
{
Graphics g = picBox.CreateGraphics();
bmp.RotateFlip(RotateFlipType.Rotate90FlipXY);
g.Clear(Color.White);
g.DrawImage(bmp, 0, 0);
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
} /// <summary>
/// 顺时针旋转
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void XuanZhuan270(Bitmap bmp, PictureBox picBox)
{
try
{
Graphics g = picBox.CreateGraphics();
bmp.RotateFlip(RotateFlipType.Rotate270FlipXY);
g.Clear(Color.White);
g.DrawImage(bmp, 0, 0);
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
}
// 继续
/// <summary>
/// 分块显示
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void FenKuai(Bitmap MyBitmap, PictureBox picBox)
{
//以分块效果显示图像
Graphics g = picBox.CreateGraphics();
g.Clear(Color.White);
int width = MyBitmap.Width;
int height = MyBitmap.Height;
//定义将图片切分成四个部分的区域
RectangleF[] block ={
new RectangleF(0,0,width/2,height/2),
new RectangleF(width/2,0,width/2,height/2),
new RectangleF(0,height/2,width/2,height/2),
new RectangleF(width/2,height/2,width/2,height/2)};
//分别克隆图片的四个部分
Bitmap[] MyBitmapBlack ={
MyBitmap.Clone(block[0],System.Drawing.Imaging.PixelFormat.DontCare),
MyBitmap.Clone(block[1],System.Drawing.Imaging.PixelFormat.DontCare),
MyBitmap.Clone(block[2],System.Drawing.Imaging.PixelFormat.DontCare),
MyBitmap.Clone(block[3],System.Drawing.Imaging.PixelFormat.DontCare)};
//绘制图片的四个部分，各部分绘制时间间隔为0.5秒
g.DrawImage(MyBitmapBlack[0], 0, 0);
System.Threading.Thread.Sleep(500);
g.DrawImage(MyBitmapBlack[1], width / 2, 0);
System.Threading.Thread.Sleep(500);
g.DrawImage(MyBitmapBlack[3], width / 2, height / 2);
System.Threading.Thread.Sleep(500);
g.DrawImage(MyBitmapBlack[2], 0, height / 2);
}
/// <summary>
/// 积木特效
/// </summary>
/// <param name="bmp">Bitmap 对象</param>
/// <param name="picBox">PictureBox 对象</param>
public static void JiMu(Bitmap MyBitmap, PictureBox picBox)
{
//以积木效果显示图像
try
{
Graphics myGraphics = picBox.CreateGraphics ();
int myWidth, myHeight, i, j, iAvg, iPixel;
Color myColor, myNewColor;
RectangleF myRect;
myWidth = MyBitmap.Width;
myHeight = MyBitmap.Height;
myRect = new RectangleF(0, 0, myWidth, myHeight);
Bitmap bitmap = MyBitmap.Clone(myRect, System.Drawing.Imaging.PixelFormat.DontCare);
i = 0;
while (i < myWidth - 1)
{
j = 0;
while (j < myHeight - 1)
{
myColor = bitmap.GetPixel(i, j);
iAvg = (myColor.R + myColor.G + myColor.B) / 3;
iPixel = 0;
if (iAvg >= 128)
iPixel = 255;
else
iPixel = 0;
myNewColor = Color.FromArgb(255, iPixel, iPixel, iPixel);
bitmap.SetPixel(i, j, myNewColor);
j = j + 1;
}
i = i + 1;
}
myGraphics.Clear(Color.WhiteSmoke);
myGraphics.DrawImage(bitmap, new Rectangle(0, 0, myWidth, myHeight));
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "信息提示");
}
}