How to view pseudolabels images?

[rst1991]

Pseudolabels are saved in .npz format. How to visualize it ?

[rst1991]

@cchen-cc Can you please help in generating pseudolabels. I am not able to visualize it.

[cchen-cc]

After reading the data from .npz files, you can then plot it out.

[rst1991]

@cchen-cc I am able to read data from .npz file but I am not able to plot it.

import matplotlib.pyplot as plt
import numpy as np
from numpy import load
from torchvision import transforms
from PIL import Image
import PIL

data = load('/data3/sfd/SFDA-DPL-main/generate_pseudo/pseudolabel_D2.npz', allow_pickle=True)
lst = data.files
for item in lst:
print(item)
print(data[item])
my_array=data[data.files[0]]

dfile = "/data3/sfd/SFDA-DPL-main/generate_pseudo/pseudolabel_D2.npz"
images = np.load(dfile,allow_pickle=True)["arr_0"]
tensor=images
tran = transforms.ToPILImage()
img = tran(tensor)
img.show()

[cchen-cc]

You can use plt.imshow() to plot the image.

[rst1991]

@cchen-cc
import matplotlib.pyplot as plt
import numpy as np
from torchvision import transforms
from PIL import Image
import PIL

dfile = "/data3/sfd/SFDA-DPL-main/generate_pseudo/pseudolabel_D2.npz"
images = np.load(dfile,allow_pickle=True)["arr_0"]
plt.imshow(images)

Traceback (most recent call last):
File "readlabel.py", line 51, in
plt.imshow(images)
File "/data3/rrd/rrd_py37/lib/python3.7/site-packages/matplotlib/pyplot.py", line 2651, in imshow
None else {}), **kwargs)
File "/data3/rrd/rrd_py37/lib/python3.7/site-packages/matplotlib/init.py", line 1565, in inner
return func(ax, *map(sanitize_sequence, args), **kwargs)
File "/data3/rrd/rrd_py37/lib/python3.7/site-packages/matplotlib/cbook/deprecation.py", line 358, in wrapper
return func(*args, **kwargs)
File "/data3/rrd/rrd_py37/lib/python3.7/site-packages/matplotlib/cbook/deprecation.py", line 358, in wrapper
return func(*args, **kwargs)
File "/data3/rrd/rrd_py37/lib/python3.7/site-packages/matplotlib/axes/_axes.py", line 5626, in imshow
im.set_data(X)
File "/data3/rrd/rrd_py37/lib/python3.7/site-packages/matplotlib/image.py", line 694, in set_data
"float".format(self._A.dtype))
TypeError: Image data of dtype <U6 cannot be converted to float