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. 2014 Jul 10;307(5):G582–G587. doi: 10.1152/ajpgi.00048.2014

Fig. 1.

Fig. 1.

Representative example of stepwise semiautomated segmentation process for gastric air. Top: original images. All tissues identified by the automatically computed threshold for air using Reddi's method are shown in the middle. Next, morphology and region growing operations were applied to identify a region of interest for air, which is shaded green (bottom). A similar process was used to segment contents (data not shown).