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When is retardance autocalibration of microgrid-based full Stokes imagers possible and useful?

机译:何时是基于微电网的全斯托克地成像仪的延迟性自动校准,可能是有用的吗?

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Full Stokes polarimetric images can be obtained from two acquisitions with a microgrid polarization camera equipped with a retarder. When the retardance is imperfectly known, it can be calibrated from the measurements, but this requires three image acquisitions and may cause divergence of estimation variance at a low signal-to-noise ratio. We determine closed-form equations allowing one to decide in which experimental conditions autocalibration is possible and useful, and to quantify the performance gain obtained in practice. These results are validated by real-world experiments. (C) 2020 Optical Society of America
机译:完整的Stokes Polariemetric图像可以从两个采集中获得,所述微电网偏振相机配备有延迟器。 当延迟不完全众所周知时,可以从测量值校准,但这需要三个图像采集并且可能以低信噪比导致估计方差的差异。 我们确定封闭式方程,允许一个人决定哪种实验条件自动校准是可能的,并且有用,并定量在实践中获得的性能增益。 这些结果由现实世界实验验证。 (c)2020美国光学学会

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