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public static bool Jitter(Bitmap b, int Offset)
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{
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BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width, b.Height),
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ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
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int stride = bmData.Stride;
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System.IntPtr Scan0 = bmData.Scan0;
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unsafe
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{
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byte * p = (byte *)(void *)Scan0;
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byte * p1 = p;
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int nOffset = stride - b.Width*3;
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Random rad = new Random();
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for(int y=0;y<b.Height;++y)
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{
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for(int x=0; x < b.Width; ++x )
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{
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int xIn = rad.Next(2 * Offset + 1) - Offset + x;
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int yIn = rad.Next(2 * Offset + 1) - Offset + y;
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if((xIn >= 0) && (yIn >= 0) && (xIn < b.Width) && (yIn < b.Height))
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{
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byte * pTemp = p1 + stride * yIn + xIn * 3;
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for (int i = 0; i < 3; i++, p++)
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{
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*p = pTemp[i];
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}
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}
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else
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{
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p += 3;
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}
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}
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p += nOffset;
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}
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}
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b.UnlockBits(bmData);
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return true;
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}

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