Multiscale Anchor-Free Region Proposal Network for Pedestrian Detection

Figure 2

An illustration and comparison of different methods for generating proposals. Our MSAF is used to extract features based on ACFF and predict bounding boxes on different scales; after that, NMS is applied to generate final proposals with IoU threshold of 0.5.

(a) RPN

(b) MS-CNN

(c) FPN

(d) CSPNet

(e) MSAF