/// <summary>
/// Implements the log-contrast correction.
/// </summary>
/// <param name="x">Brightness</param>
/// <param name="power">Power</param>
/// <returns>float precision floating point number</returns>
public static float LogContrast(float x, float power)
{
if (x <= 0.5)
{
return((float)Intensity.LogPow(x * 2, power) * 0.5f);
}
return(1.0f - (float)Intensity.LogPow((1 - x) * 2, power) * 0.5f);
}
/// <summary>
/// Implements the logarithmic stretch algorithm.
/// </summary>
/// <param name="x">Brightness</param>
/// <param name="mu">Filter brightness</param>
/// <param name="s">Shadows</param>
/// <param name="l">Highlights</param>
/// <returns>float precision floating point number</returns>
public static float LogStretch(float x, float mu, float s, float l)
{
return(Intensity.LogPow(x, Maths.Range(Intensity.log05 / (float)Math.Log(mu), s, l)));
}