public byte[] ConvertToRaw()
{
IntPtr bits = IntPtr.Zero;
bits = Marshal.AllocHGlobal(this.Height * this.Pitch);
FreeImageApi.ConvertToRawBits(bits, m_Handle, this.Pitch, (uint)this.Bpp, (uint)0, (uint)0, (uint)0, false);
byte[] bts = new byte[this.Height * this.Pitch];
Marshal.Copy(bits, bts, 0, bts.Length);
return(bts);
}