USING THE FISHER TRANSFORM By John Ehlers - attached
"Prices do not have a Gaussian PDF. By normalizing prices or creating a normalized indicator such as the RSI or Stochastic, and applying the Fisher Transform, a nearly Gaussian PDF can be created. Such a transformed output creates the peak swings as relatively rare events. The sharp turning points of these peak swings clearly and unambiguously identify price reversals in a timely manner. As a result, superior discretionary trading can be expected and higher performing mechanical trading systems can be developed by using the Fisher Transform."
some Fischer indicators attached (not checked yet)