public Bitmap CutBitmap(Bitmap b, int left, int top, int Width, int Height)//对图片进行裁剪
{
Bitmap bm = b;
Graphics g = Graphics.FromImage(bm);
g.DrawImage(b, new Rectangle(0, 0, bm.Width, bm.Height), new Rectangle(left, top, Width, Height), GraphicsUnit.Pixel);
g.Dispose();
Bitmap bmp=ResizeBitmap(bm, 150, 150);
return bmp;
}
public Bitmap ResizeBitmap(Bitmap b, int dstWidth, int dstHeight)//对像片进行平滑缩放处理
{
Bitmap dstImage = new Bitmap(dstWidth, dstHeight);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(dstImage);
// 设置插值模式
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Bilinear;
// 设置平滑模式
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.DrawImage(b,
new System.Drawing.Rectangle(0, 0, dstImage.Width, dstImage.Height),
new System.Drawing.Rectangle(0, 0, b.Width, b.Height),
System.Drawing.GraphicsUnit.Pixel);
g.Save();
g.Dispose();
return dstImage;
}