Fig. 2
From: A weakly-supervised follicle segmentation method in ultrasound images
Detection branch architecture. The P1 to P5 blocks (in blue) represent different levels of the feature pyramid, each corresponding to a distinct scale of feature representation. This enables the model to simultaneously detect targets of varying sizes. P3 to P5 in green are blocks in the decoder which also represent different levels of the feature pyramid, responsible for the final classification and bounding box regression of the extracted features.
