Light Fields in Ray and Wave Optics

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Presentation transcript:

Light Fields in Ray and Wave Optics Introduction to Light Fields: Ramesh Raskar Wigner Distribution Function to explain Light Fields: Zhengyun Zhang Augmenting LF to explain Wigner Distribution Function: Se Baek Oh Q&A Break Light Fields with Coherent Light: Anthony Accardi New Opportunities and Applications: Raskar and Oh Q&A: All

WDF Augmented LF Observable LF incoherent Rihaczek Space of LF representations Time-frequency representations Phase space representations Quasi light field Other LF representations WDF Other LF representations Observable LF Augmented LF Traditional light field incoherent Rihaczek Distribution Function coherent

Property of the Representation Constant along rays Non-negativity Coherence Wavelength Interference Cross term Traditional LF always constant always positive only incoherent zero no Observable LF nearly constant any coherence state any yes Augmented LF only in the paraxial region positive and negative WDF Rihaczek DF no; linear drift complex reduced

Benefits & Limitations of the Representation Ability to propagate Modeling wave optics Simplicity of computation Adaptability to current pipe line Near Field Far Field Traditional LF x-shear no very simple high yes Observable LF not x-shear modest low Augmented LF WDF Rihaczek DF better than WDF, not as simple as LF

Light Fields Radiance per ray Ray parametrization: Position : s, x, r Goal: Representing propagation, interaction and image formation of light using purely position and angle parameters Radiance per ray Ray parametrization: Position : s, x, r Direction : u, θ, s direction Reference plane position