Table 3 Ablation studies of different implementations of AFB on the DDR dataset, where [self, cross] denotes the simple concatenation of the self-attention mechanism and cross-attention mechanism over the channels, concat. denotes the concatenation of the lesion-feature based and vascular-feature based keys over the channels, and + denotes the spatial summation of these two keys.

From: Prior-guided attention fusion transformer for multi-lesion segmentation of diabetic retinopathy