读取深度图并显示的问题

import cv2
import os
import numpy as np

depth = np.load('depth_0176.npy')
depth = np.clip(depth, 0, 6000)    #<--要有这句将上限限制在有效数字范围内，后续才能正常显示
depth = cv2.normalize(src=depth, dst=depth, beta=0, alpha=255, norm_type=cv2.NORM_MINMAX)
depth = np.uint8(depth)
cv2.imshow('depth',depth)
cv2.waitKey()