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. 2018 Mar 29;6(4):E462–E469. doi: 10.1055/a-0573-1044

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This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.

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Fig. 3 — Illustrations of the outputs of surface-based methods for three different frames with various amount of bubbles: native image (left); bubbles detection based on the Grey-level of co-occurrence matrix strategy (algorithm 3, center); C bubbles detection based on the Speeded-Up Robust Features SURF point detection strategy (algorithm 4, right).