_train(anchor_scales=args.rpn_anchor_scales, anchor_ratios=args.rpn_anchor_ratios,                          rpn_feature_stride=args.rpn_feat_stride, rpn_pre_topk=args.rpn_pre_nms_topk,                          rpn_post_topk=args.rpn_post_nms_topk, rpn_nms_thresh=args.rpn_nms_thresh,                          rpn_min_size=args.rpn_min_size, rpn_batch_rois=args.rpn_batch_rois,                          num_classes=args.rcnn_num_classes, rcnn_feature_stride=args.rcnn_feat_stride,                          rcnn_pooled_size=args.rcnn_pooled_size, rcnn_batch_size=args.rcnn_batch_size,                          rcnn_batch_rois=args.rcnn_batch_rois, rcnn_fg_fraction=args.rcnn_fg_fraction,                          rcnn_fg_overlap=args.rcnn_fg_overlap, rcnn_bbox_stds=args.rcnn_bbox_stds