本文实例讲述了C#图像处理之浮雕效果实现方法。分享给大家供大家参考。具体如下：

//定义浮雕处理函数

public Bitmap PFudiao(Bitmap a)

{

try

{

int w = a.Width;

int h = a.Height;

Bitmap dstBitmap = new Bitmap(w, h, System.Drawing.Imaging.PixelFormat.Format24bppRgb);

System.Drawing.Imaging.BitmapData srcData = a.LockBits(new Rectangle

(0, 0, w, h), System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);

System.Drawing.Imaging.BitmapData dstData = dstBitmap.LockBits(new Rectangle

(0, 0, w, h), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);

unsafe

{

byte* pIn = (byte*)srcData.Scan0.ToPointer();

byte* pOut = (byte*)dstData.Scan0.ToPointer();

byte* p;

int stride = srcData.Stride;

for (int y = 0; y < h; y++)

{

for (int x = 0; x < w; x++)

{

//边缘八个点像素不变

if (x == 0 || x == w - 1 || y == 0 || y == h - 1)

{

pOut[0] = pIn[0];

pOut[1] = pIn[1];

pOut[2] = pIn[2];

}

else

{

int r0, r1;

int g1, g0;

int b1, b0;

double vR, vG, vB;

//右

p = pIn - 3;

r1 = p[2];

g1 = p[1];

b1 = p[0];

//中心点

p = pIn;

r0 = p[2];

g0 = p[1];

b0 = p[0];

//使用模板

vR = Math.Abs(r0 - r1+128);

vG = Math.Abs((g0 - g1 + 128));

vB = Math.Abs((b0 - b1 + 128));

if (vR > 0)

{

vR = Math.Min(255, vR);

}

else

{

vR = Math.Max(0, vR);

}

if (vG > 0)

{

vG = Math.Min(255, vG);

}

else

{

vG = Math.Max(0, vG);

}

if (vB > 0)

{

vB = Math.Min(255, vB);

}

else

{

vB = Math.Max(0, vB);

}

pOut[0] = (byte)vB;

pOut[1] = (byte)vG;

pOut[2] = (byte)vR;

}

pIn += 3;

pOut += 3;

}

pIn += srcData.Stride - w * 3;

pOut += srcData.Stride - w * 3;

}

}

a.UnlockBits(srcData);

dstBitmap.UnlockBits(dstData);

return dstBitmap;

}

catch (Exception e)

{

MessageBox.Show(e.Message.ToString());

return null;

}

}

原图：

效果图：

希望本文所述对大家的C#程序设计有所帮助。