这个代码有什么问题import cv2 import numpy as np img = cv2.imread(r'E:\\postgraduate\\three\\DIP3E_Original_Images_CH03\\1.tif', 0) def invert_image(img): height, width = img.shape Image = np.zeros((height, width), np.uint8) for i in range(0, height): for j in range(0, width): imgPixel = img[i, j] Image[i, j] = 255 - imgPixel return Image Image = invert_image(img) cv2.namedWindow('Image1') cv2.imshow('Image1', Image) cv2.waitKey(0) cv2.destroyAllWindows()
时间: 2024-02-14 07:05:39 浏览: 26
这段代码的问题是 `return` 语句放在了两个循环的内部,导致函数只执行了一次循环就直接返回了结果,因此输出的图像可能不正确。另外,代码中没有对函数进行调用,需要在文件末尾加上 `invert_image(img)`。最后,代码中的路径使用了反斜杠 `\`,需要使用双反斜杠 `\\` 或者正斜杠 `/`。下面是修改后的代码:
```
import cv2
import numpy as np
img = cv2.imread('E:/postgraduate/three/DIP3E_Original_Images_CH03/1.tif', 0)
def invert_image(img):
height, width = img.shape
Image = np.zeros((height, width), np.uint8)
for i in range(0, height):
for j in range(0, width):
imgPixel = img[i, j]
Image[i, j] = 255 - imgPixel
return Image
Image = invert_image(img)
cv2.namedWindow('Image1')
cv2.imshow('Image1', Image)
cv2.waitKey(0)
cv2.destroyAllWindows()
invert_image(img)
```