我想要一份视网膜图像分割指标准确率,召回率的python代码
时间: 2023-03-31 20:02:32 浏览: 93
以下是一份视网膜图像分割的准确率和召回率的 Python 代码:
```python
import numpy as np
def dice_coef(y_true, y_pred, smooth=1):
intersection = np.sum(y_true * y_pred)
return (2. * intersection + smooth) / (np.sum(y_true) + np.sum(y_pred) + smooth)
def dice_coef_loss(y_true, y_pred):
return 1 - dice_coef(y_true, y_pred)
def precision(y_true, y_pred):
true_positives = np.sum(np.round(np.clip(y_true * y_pred, , 1)))
predicted_positives = np.sum(np.round(np.clip(y_pred, , 1)))
return true_positives / (predicted_positives + 1e-6)
def recall(y_true, y_pred):
true_positives = np.sum(np.round(np.clip(y_true * y_pred, , 1)))
possible_positives = np.sum(np.round(np.clip(y_true, , 1)))
return true_positives / (possible_positives + 1e-6)
```
其中,`dice_coef` 函数计算 Dice 系数,`dice_coef_loss` 函数计算 Dice 损失,`precision` 函数计算准确率,`recall` 函数计算召回率。