RAW12转RAW16

import bitstring
import numpy


with open(path, 'rb') as f:
     data = f.read()

ii=numpy.zeros(int(2*len(data)/3))
ic = 0
for oo in range(0,int(len(data)/3)):  
    aa = bitstring.Bits(bytes=data[oo:oo+3], length=24)
    ii[ic],ii[ic+1] = aa.unpack('uint:12,uint:12')
    ic=ic+2
b = numpy.reshape(ii,(3840,2160))