radius:the blur radius used for the guided depth mask creation
epsilon:the edge threshold used for the guided depth mask creation
strength:strength of the dehazing effect. anything lower than 1.0 will leave residual haze in the distance.
t0:minimum optical thickness for numerical safety. a value greater than zero limits the effect of dehazing. usually you don't have to touch this.
haze:the airlight colour of the haze to remove. set to something like the brightest haze contribution in the input image.
