Fig. 2: Glimpse and batch formation: Scanned whole-slide images are annotated and ROIs are extracted (left panel). | Laboratory Investigation

Fig. 2: Glimpse and batch formation: Scanned whole-slide images are annotated and ROIs are extracted (left panel).

From: GestAltNet: aggregation and attention to improve deep learning of gestational age from placental whole-slide images

Fig. 2

ROIs are tiled into HPFs (2nd panel, black lines). HPFs are randomly sampled without replacement across all ROIs of each patient to form a glimpse (third panel, HPF shading indicates glimpse) second panel from left, colored HPFs indicate their corresponding glimpse. Glimpses are constant size (16) except the last glimpse (purple oval) which takes the remainder. Glimpses from one patient are distributed across batches (fourth panel, gray ovals are glimpses from other patients).

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