/// <summary>
/// Converts the source channel depth to the destination channel depth.
/// </summary>
/// <typeparam name="TDepth">Destination channel depth.</typeparam>
/// <param name="image">Image.</param>
/// <returns>Image with converted element depth.</returns>
public static Gray <TDepth>[,] Cast <TDepth>(this Gray <double>[,] image)
where TDepth : struct
{
return(image.ConvertChannelDepth <Gray <double>, Gray <TDepth> >());
}