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实现winform图片特效
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;
}