Property

1
Property
constant along rays non-negativity coherence wavelength cross term
traditional light field always constant always positive only incoherent zero no
observable light field nearly constant always positive any coherence state for any wavelength has cross term
augmented light field only in the paraxial region positive and negative any coherence state for any wavelength has cross term
WDF only in the paraxial region positive and negative any coherence state for any wavelength has cross term
Rihaczek no linear drift complex any coherence state for any wavelength reduced cross terms
2
benefits limitations
ability to propagate representing wave optics simplicity of computation adaptability to current pipe line near field far field
traditional light field x-shear no very simple high no yes
observable light field not x-shear yes modest low yes yes
augmented light field x-shear yes modest high no yes
WDF x-shear yes modest low yes yes
Rihaczek x-shear yes better than WDF, not as simple as LF low no yes