/// <summary>
/// Initializes a new instance of <see cref="ImageGraphic"/>
/// with the specified image parameters.
/// </summary>
/// <param name="rows"></param>
/// <param name="columns"></param>
/// <param name="bitsPerPixel">Can be 8 or 16 in the case of
/// grayscale images, or 32 for multichannel colour images.</param>
/// <param name="pixelData"></param>
/// <remarks>
/// Creates an image using existing pixel data.
/// </remarks>
/// <exception cref="NullReferenceException"><paramref name="pixelData"/> is <b>null</b></exception>
/// <exception cref="ArgumentException"><paramref name="rows"/> or
/// <paramref name="columns"/> is negative, or <paramref name="bitsPerPixel"/>
/// is not one of 8, 16 or 32.</exception>
protected ImageGraphic(int rows, int columns, int bitsPerPixel, byte[] pixelData)
{
Platform.CheckForNullReference(pixelData, "pixelData");
DicomValidator.ValidatePixelData(pixelData, rows, columns, bitsPerPixel);
_pixelDataRaw = pixelData;
Initialize(rows, columns, bitsPerPixel);
}
