Some pointers and unsafe code should be used (sorry there is no other way for processing pixels). Function takes file path as parameter "path" and returns a Bitmap instance of the raw formatted image.
As raw image format does not provide height and width info of the image contained, you should provide these to the function as w and h.
private Bitmap CreateBitmap(string path,int w,int h)
{
FileStream sp = File.Open(path, FileMode.Open);
Rectangle myrect = new Rectangle(0, 0, w, h);
Bitmap mapImage = new Bitmap(w, h);
BitmapData bmpData = mapImage.LockBits(myrect, ImageLockMode.WriteOnly, PixelFormat.Format32bppPArgb);
int[] mapBitmap = new int[w* h];
int ptr = bmpData.Scan0.ToInt32();
unsafe
{
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
int val = sp.ReadByte();
mapBitmap[y * w+ x] = val;
if (val == 0)
val = Color.Gray.ToArgb();
if (val == 255)
val = Color.LightYellow.ToArgb();
*(int*)(ptr + y * bmpData.Stride + x * 4 + 0) = val;
}
}
mapImage.UnlockBits(bmpData);
}
sp.Close();
return mapImage;
}
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