A PCB Electronic Components Detection Network Design Based on Effective Receptive Field Size and Anchor Size Matching

Figure 2

Schematic diagram of K-means cluster anchors. (a) 9 anchors were produced by the original K-means clustering method (b) 9 anchors produced by the K-means clustering method after resized. In this paper, the anchors in (b) are used as a priori box for target recognition and positioning. In YOLOv3, the blue, green, and red anchors will be assigned to the small, middle, and large feature fusion layers of the output layer, respectively.

(a)

(b)