Fig. 4

Attention areas and attention scores of multi-scale detection layers (red rectangles are the prior labeled wheat spike bounding boxes). a Attention areas of the small-scale detection layer (in white). b Attention areas of the medium-scale detection layer (in white). c Attention areas of the large-scale detection layer (in white). d Attention score values and heatmaps of the small-scale detection layer. e Attention score values and heatmaps of the medium-scale detection layer. f Attention score values and heatmaps of the large-scale detection layer