/// <summary>
/// Swaps the channels for an image provided by a url.
/// </summary>
/// <param name="order">Channel ordering. Each value has to be [0..2] range.</param>
/// <param name="imgUrl">Image url.</param>
/// <returns>Processed image.</returns>
public Bgr <byte>[,] SwapImageChannels(Uri imgUrl, int[] order)
{
if (order.Any(x => x < 0 || x > CHANNEL_COUNT - 1))
{
throw new ArgumentException(String.Format("Each element of the channel order must be in: [{0}..{1}] range.", 0, CHANNEL_COUNT - 1));
}
Bgr <byte>[,] image = null;
try { image = imgUrl.GetBytes().DecodeAsColorImage(); }
catch (Exception ex) { throw new Exception("The specified url does not point to a valid image.", ex); }
image.Apply(c => swapChannels(c, order), inPlace: true);
return(image);
}
