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arXiv · 1508.00612

Two step robust fringe analysis method with random shift

Mariano Rivera·Oscar Dalmau·Adonai Gonzalez·Francisco Hernandez
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Abstract

We propose a two steps fringe analysis method assuming random phase step and changes in the illumination conditions. Our method constructs on a Gabor Filter--Bank (GFB) that independently estimates the phase from the fringe patterns and filters noise. As result of the GFB we obtain the two phase maps except by a random sign map. We show that such a random sign map is common to the independently computed phases and can be estimated from the residual between the phases. We estimate the final phase with a robust unwrapping procedure that interpolates unreliable phase regions. We present numerical experiments with synthetic and real date that demonstrate our method performance.

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Mariano Rivera, Oscar Dalmau, Adonai Gonzalez, Francisco Hernandez. 2015-08-03. Two step robust fringe analysis method with random shift. https://arxiv.org/abs/1508.00612

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