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. Author manuscript; available in PMC: 2021 Jul 21.
Published in final edited form as: IEEE ASME Trans Mechatron. 2020 Sep 1;26(3):1445–1454. doi: 10.1109/tmech.2020.3020923

Fig. 4.

Fig. 4.

Demonstration of intuition behind threshold metric, the value of the threshold metric B (number of bright pixels) increases from 0.0434 to 0.1640 with increase in phase error from 0 to 0.075π for (a) and (b) respectively.