第16行中的<module> cv2.imshow（'frame A'，frame）TypeError：'tuple'对象不可调用

Question

在此之前它一直没有工作。我不明白为什么，我必须将其全部更改为功能吗？第16行以前工作过，我想稍后再将其他所有内容转换为函数。我看到框架无法调用。

import cv2
import time


cap = cv2.VideoCapture(0)
start = time.time()
count=0

while(True):
    ret, frame = cap.read()
    frame = frame/255
    count+=1
    cv2.imshow('frame A',frame)
    m= (frame[:,::-1])
    cv2.imshow('mirror',m)
    halved= (frame[:,::2])
    cv2.imshow('halved',halved)
    gray= ((frame[:,:,2]+ frame[:,:,1]+frame[:,:,0])/3)
    cv2.imshow('gray', gray)
    negative_gray= ((frame[:,:,-2]+ frame[:,:,-1]+frame[:,:,0])/3)
    cv2.imshow= ('negative gray', 1-negative_gray)
    border = 20 
    border_frame= (frame[border:-border,border:-border,:])
    cv2.imshow=('border_frame', border_frame)



    if cv2.waitKey(1) & 0xFF == ord('q'):



        cv2.imwrite('final_image.jpg', frame*255) #Save last image to disk
        cv2.imwrite('mirror.jpg',m)
        cv2.imwrite('halved.jpg',halved)
        cv2.imwrite('gray.jpg', gray)
        cv2.imwrite('negative_gray.jpg', 1-negative_gray)
        cv2.imwrite('border_frame.jpg', border_frame)            
        break

elapsed_time = time.time()-start
print('Capture speed: {0:.2f} frames per second'.format(count/elapsed_time))   
cap.release()
cv2.destroyAllWindows()