import cv2
cap = cv2.VideoCapture(0)
start_time = time.time()
while cap.isOpened():
ok, im = cap.read()
if not ok:
break
img = copy.deepcopy(im)
h,w,_ = img.shape
for i in range(h):
for j in range(w):
img[i,w-1-j] = im[i,j] #水平镜像
finall_time = time.time()
cv2.imshow('d', img)
c = cv2.waitKey(1)
if c & 0xFF == ord('q'):
cap.release()
cv2.destroyAllWindows()
break
if finall_time - start_time > 10:
cap.release()
cv2.destroyAllWindows()
break
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