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namespace Colourful.Implementation.RGB
{
/// <summary>
/// Pair of companding functions for <see cref="IRGBWorkingSpace" />.
/// Used for conversion to XYZ and backwards.
/// See also: <seealso cref="IRGBWorkingSpace.Companding" />
/// </summary>
public interface ICompanding
{
/// <summary>
/// Companded channel is made linear with respect to the energy.
/// </summary>
/// <remarks>
/// For more info see:
/// http://www.brucelindbloom.com/index.html?Eqn_RGB_to_XYZ.html
/// </remarks>
double InverseCompanding(double channel);
/// <summary>
/// Uncompanded channel (linear) is made nonlinear (depends on the RGB color system).
/// </summary>
/// <remarks>
/// For more info see:
/// http://www.brucelindbloom.com/index.html?Eqn_XYZ_to_RGB.html
/// </remarks>
double Companding(double channel);
}
}
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