RuntimeError: filter weights array has incorrect shape.

完整代碼以下

import cv2
import numpy as np
from scipy import ndimage

kernel133 = np.array([
    [-1, -1, -1],
    [-1, 8, -1],
    [-1, -1, -1]
])

kernel133_D = np.array([
    [1, 1, 1],
    [1, -8, 1],
    [1, 1, 1]
])

img = cv2.imread('jj.jpg')

img = ndimage.convolve(img, kernel133_D)

cv2.imshow('enhanced', img)
cv2.waitKey(0)

完整的報錯以下

Traceback (most recent call last):
  File "D:/Python/測試專用文件夾/opencv測試.py", line 19, in <module>
    img = ndimage.convolve(img, kernel133_D)
  File "C:\Users\yjc\AppData\Local\Programs\Python\Python37\lib\site-packages\scipy\ndimage\filters.py", line 745, in convolve
    origin, True)
  File "C:\Users\yjc\AppData\Local\Programs\Python\Python37\lib\site-packages\scipy\ndimage\filters.py", line 595, in _correlate_or_convolve
    raise RuntimeError('filter weights array has incorrect shape.')
RuntimeError: filter weights array has incorrect shape.

經過這個文章，我知道了，cv2.imread要加一個額外的參數

img = cv2.imread('jj.jpg', cv2.IMREAD_GRAYSCALE)

或者

img = cv2.imread('jj.jpg', 0)#0表示加載一張灰度圖。

OpenCV_Python API 官方文檔學習_ cv2.imread()

cv2.IMREAD_COLOR : 默認使用該種標識。加載一張彩色圖片，忽視它的透明度。 cv2.IMREAD_GRAYSCALE : 加載一張灰度圖。 cv2.IMREAD_UNCHANGED : 加載圖像，包括它的Alpha通道。