import cv2 import numpy as np def denoise(images, ksize): avg_img = np.zeros_like(images[0], dtype = np.float32) for img in images: blur_img = c2.GaussianBlur(img.ksize. 0) avg_img += blur_img avg_img /= len(images) avg_img = np.round(avg_img).astype(np.uint8) return avg_img img1 = cv2.imread('C:/Users/Administrator/PycharmProjects/untitled1/text.png') img2 = cv2.imread('C:/Users/Administrator/PycharmProjects/untitled1/R-C.png') img3 = cv2.imread('C:/Users/Administrator/PycharmProjects/untitled1/R-C(1).png') images = [img1, img2, img3] ksize = (5, 5) denoised_img = denoise(images, ksize) cv2.imshow('Denoised Image', denoised_img) cv2.waitKey(0) cv2.destroyAllWindows() 上述代码运行之后报错显示:name 'avg_img' is not defined,该如何处理
时间: 2024-03-08 09:50:39 浏览: 175
在您提供的代码中,函数 `denoise()` 中的 `avg_img` 变量定义在循环中,因此它的作用域仅限于循环内部。当函数返回时,变量已经不存在了,因此在函数外部无法访问变量。为了解决这个问题,您需要将 `avg_img` 的定义移动到循环外部,以便它的作用域扩展到整个函数。以下是修改后的代码:
```
import cv2
import numpy as np
def denoise(images, ksize):
avg_img = np.zeros_like(images[0], dtype=np.float32)
for img in images:
blur_img = cv2.GaussianBlur(img, ksize, 0)
avg_img += blur_img
avg_img /= len(images)
avg_img = np.round(avg_img).astype(np.uint8)
return avg_img
img1 = cv2.imread('C:/Users/Administrator/PycharmProjects/untitled1/text.png')
img2 = cv2.imread('C:/Users/Administrator/PycharmProjects/untitled1/R-C.png')
img3 = cv2.imread('C:/Users/Administrator/PycharmProjects/untitled1/R-C(1).png')
images = [img1, img2, img3]
ksize = (5, 5)
denoised_img = denoise(images, ksize)
cv2.imshow('Denoised Image', denoised_img)
cv2.waitKey(0)
cv2.destroyAllWindows()
```
在修改后的代码中,`avg_img` 变量在函数外部定义,并在循环中累加高斯模糊后的图像。最后,它被除以图像数,舍入并转换为 `uint8` 类型。函数返回 `avg_img` 变量的值,并在主程序中显示去噪后的图像。
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