import rawpy
import numpy as np
from matplotlib import pyplot as plt
bit_depth =12
exposure =5
path ="Images/00060_04_0.1s/00060_04_0.1s.ARW"
raw = rawpy.imread(path)
black_level = raw.black_level_per_channel[0]# assume they're all the same
im = raw.raw_image
im = np.maximum(im, black_level) - black_level # changed order of computation
im *=2**exposure
im = im + black_level
im = np.minimum(im,2**bit_depth - 1)
raw.raw_image[:,:]= im
im = raw.postprocess(use_camera_wb=True, no_auto_bright=True)
plt.imshow(im)
plt.axis('off')
plt.title('Image')
plt.show()
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