如何将yolov7中的kmean替换成kmean++
时间: 2024-05-13 16:16:28 浏览: 109
KMean.rar_Kmeans++_kmean
在YOLOv7中,K-means用于确定锚框的大小。如果您想将标准k-means替换为k-means ++,可以按照以下步骤进行操作:
1. 打开“utils/general.py”文件并找到以下代码:
```
def kmeans_iou(boxes, k, dist=np.median):
...
```
2. 将该代码替换为以下代码:
```
def kmeans_iou(boxes, k, dist=np.median):
boxes = np.array(boxes)
rows = boxes.shape[0]
distances = np.empty((rows, k))
last_clusters = np.zeros((rows,))
np.random.seed()
clusters = boxes[np.random.choice(rows, k, replace=False)]
while True:
for row in range(rows):
distances[row] = 1 - iou(boxes[row], clusters)
nearest_clusters = np.argmin(distances, axis=1)
if (last_clusters == nearest_clusters).all():
break
for cluster in range(k):
clusters[cluster] = dist(boxes[nearest_clusters == cluster], axis=0)
last_clusters = nearest_clusters
return clusters
```
3. 保存文件并重新运行YOLOv7。
现在,您已经成功地将YOLOv7中的标准k-means替换为k-means ++。
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