CODEWITHSUNDEEP
python-3.xpython-imageio
Calcutta
Calcutta

Reputation: 1149

ValueError: Could not find a format to read the specified file in mode 'i'

I am trying to read a png file into a python-flask application running in docker and am getting an error that says

ValueError: Could not find a format to read the specified file in mode 'i'

i have uploaded a file using an HTML file and now i am trying to read it for further processing. i see that scipy.misc.imread is deprecated and i am trying to replace this with imageio.imread

if request.method=='POST':
    file = request.files['image']
    if not file: 
        return render_template('index.html', label="No file")
    #img = misc.imread(file)
    img = imageio.imread(file)

i get this error :

File "./appimclass.py", line 34, in make_prediction

img = imageio.imread(file)

File "/usr/local/lib/python3.6/site-packages/imageio/core/functions.py", line 221, in imread

reader = read(uri, format, "i", **kwargs)

File "/usr/local/lib/python3.6/site-packages/imageio/core/functions.py", line 139, in get_reader

"Could not find a format to read the specified file " "in mode %r" % mode

Upvotes: 12

Views: 52329

Answers (6)

Dipan Ghosh
Dipan Ghosh

Reputation: 176

Had the exact same problem recently, and the issue was a single corrupt file. Best is to use something like PIL to check for bad files.

import os
from os import listdir
from PIL import Image

dir_path = "/path/"


for filename in listdir(dir_path):
    if filename.endswith('.jpg'):
        try:
            img = Image.open(dir_path+"\\"+filename) # open the image file
            img.verify() # verify that it is, in fact an image
        except (IOError, SyntaxError) as e:
            print('Bad file:', filename)
            #os.remove(dir_path+"\\"+filename) (Maybe)

Upvotes: 7

Khan
Khan

Reputation: 1498

I had accidentally saved some images as PDF, so the error occurred. resolved after deleting those incompatible format images.

Upvotes: 0

zfireear
zfireear

Reputation: 63

enter image description here

I encountered the same error, and at last, I found it was because the picture was damaged.

Upvotes: 1

PabloVD
PabloVD

Reputation: 17

Add the option "pilmode":

imageio.imread(filename,pilmode="RGB")

It worked for me.

Upvotes: 1

Uncle Vinny
Uncle Vinny

Reputation: 543

I had this problem today, and found that if I closed the file before reading it into imageio the problem went away.

Error was:

File "/home/vinny/pvenvs/chess/lib/python3.6/site-packages/imageio/core/functions.py", line 139, in get_reader                                                  "Could not find a format to read the specified file " "in mode %r" % mode  ValueError: Could not find a format to read the specified file in mode 'i'

Solution: Put file.close() before images.append(imageio.imread(filename)), not after.

Upvotes: 1

Arsene Lupin
Arsene Lupin

Reputation: 343

Different, but in case helpful. I had an identical error in a different library (skimage), and the solution was to add an extra 'plugin' parameter like so - 

image = io.imread(filename,plugin='matplotlib')

Upvotes: 9

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