import cv2
import numpy as np
a=cv2.imread("C:\\Users\\25644\\Desktop\\新建文件夹\\cb.jpg")
b=a
# add1= a + b
add2=cv2.add(a,b)
# cv2.imshow('add1',add1)
cv2.imshow('add2',add2)
cv2.imshow('a',a)
cv2.waitKey()
cv2.destroyAllWindows()
# a=cv2.imread("C:\\Users\\25644\\Desktop\\cb3.png")
# b=cv2.imread("C:\\Users\\25644\\Desktop\\cb1.jpg")
# c=cv2.imread("C:\\Users\\25644\\Desktop\\cb2.jpg")
# d=cv2.imread("C:\\Users\\25644\\Desktop\\cb.jpg")
# result1=cv2.addWeighted(a,1,b,1,0)
# result2=cv2.addWeighted(c,1,d,1,0)
# cv2.imshow('beta',a)
# cv2.imshow('betb',b)
# cv2.imshow('betc',c)
# cv2.imshow('betd',d)
# cv2.imshow('result1',result1)
# cv2.imshow('result2',result2)
# cv2.waitKey()
# cv2.destroyAllWindows()
# a=cv2.imread("C:\\Users\\25644\\Desktop\\cb1.jpg",cv2.IMREAD_UNCHANGED)
# b=cv2.cvtColor(a,cv2.COLOR_BGR2GRAY)
# c=cv2.cvtColor(a,cv2.COLOR_BGR2RGB)
# # d=cv2.cvtColor(a,cv2.COLOR_GRAY2RGB)
# cv2.imshow('a',a)
# cv2.imshow('b',b)
# cv2.imshow('c',c)
# # cv2.imshow('d',d)
# db,dg,dr=cv2.split(a)
# cv2.imshow('db',db)
# cv2.imshow('dg',dg)
# cv2.imshow('dr',dr)
# m1=cv2.merge([dr,dg,db])
# cv2.imshow('m1',m1)
# print("灰度图像b通道:",b.shape)
# # print("转换后彩色图像d通道:",d.shape)
# cv2.waitKey()
# cv2.destroyAllWindows()
假设这里面的图片路径全都正确,那为什么不能运行。