python 高程灰度图tif转png

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import cv2 import numpy as np im = cv2.imread('in.tif',flags=(cv2.IMREAD_GRAYSCALE | cv2.IMREAD_ANYDEPTH)) height = im.shape[0] width = im.shape[1] print(height) print(width) nmin=4294967296 nmax=0 for row in range(height):     for col in range(width):         ntemp=im[row][col]         if ntemp>nmax:             nmax=ntemp         if ntemp<nmin:             nmin=ntemp nl=nmax-nmin print(nmax) print(nmin) for row in range(height):     for col in range(width):         ntemp=im[row][col]         im[row][col] = (ntemp - nmin) cv2.imwrite('out.png', im.astype(np.uint16)) print ('convert complete')

　　

32位高程tiff 通过如上脚本转为16位灰度png

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