We propose a robust phase-shift estimation method for statistical generalized phase-shifting digital holography. Phase randomness in the Fresnel diffraction field of an object is sufficiently established by a linear phase factor of the oblique incident reference wave in a slightly off-axis optical configuration. An object wave can be obtained by the statistical method without depending on the statistical property on the Fresnel diffraction field of the object. We present computer simulations and optical experiments to verify the proposed method.

© 2014 Optical Society of America

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