C#图像处理之图像平移的方法

本文实例讲述了C#图像处理之图像平移的方法。分享给大家供大家参考。具体如下：

//定义图像平移函数
private static Bitmap offsetp(Bitmap a,int s,int v)
{
System.Drawing.Imaging.BitmapData srcData = a.LockBits(new Rectangle (0,0,a.Width ,a.Height) ,System .Drawing .Imaging .ImageLockMode .ReadWrite ,a.PixelFormat );
IntPtr ptr = srcData.Scan0;
int bytes = srcData.Stride * a.Height;
byte[]grayVlaues=new byte[bytes];
System.Runtime.InteropServices.Marshal.Copy(ptr ,grayVlaues ,0,bytes);
byte[] tempArray=new byte[bytes];
for (int i = 0; i < bytes; i++)
{
 tempArray[i] = 255;
}
for (int i = 0; i < a.Width * 3; i += 3)
{
 if ((i + s*3) < a.Width*3 && (i + s*3) > 0)
 {
  for (int j = 0; j < a.Height; j++)
  {
  if ((j + v) < a.Height && (j + v) > 0)
  {
  tempArray[(i + s * 3) + (j + v) * srcData.Stride] = grayVlaues[i + j * srcData.Stride];
  tempArray[i + s * 3 + 1 + (j + v) * srcData.Stride] = grayVlaues[i + 1 + j * srcData.Stride];
  tempArray[i + s * 3 + 2 + (j + v) * srcData.Stride] = grayVlaues[i + 2 + j * srcData.Stride];
  }
  }
 }
 }
grayVlaues = (byte[])tempArray.Clone();
System.Runtime.InteropServices.Marshal.Copy(grayVlaues ,0,ptr, bytes);
a.UnlockBits(srcData );
return a;
}

希望本文所述对大家的C#程序设计有所帮助。