yolov5 custom数据集查看anchors

1. 查看anchors

yolov5模型在训练自己的数据集之前会进行autoanchor check,autoanchor check会自动对数据集中的ground truth boxes进行key means聚类,产生新的anchors以提高模型检测的mAP,可以通过以下代码查看新的生成的anchors:

import torch
from models.experimental import attempt_load


model = attempt_load('./weights/yolov5s.pt', map_location=torch.device('cpu'))
m = model.module.model[-1] if hasattr(model, 'module') else model.model[-1]
print(m.anchor_grid)

2. 使用默认anchors

如果不想进行anchors的key means聚类,可以在训练时添加--noautoanchor,使用默认的anchors,默认的anchors如下所示:

# anchors
anchors:
  - [10,13, 16,30, 33,23]  # P3/8
  - [30,61, 62,45, 59,119]  # P4/16
  - [116,90, 156,198, 373,326]  # P5/32

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转载自blog.csdn.net/linghu8812/article/details/110532712