Read and Save multiple images in a folder: Python

Question

I am a beginner in python. I am trying to read all of the ascii files from one folder and after converting them into Image, I want all of them to be saved into a different folder in same directory. The code is running but I am not getting any output and no error is displayed.

Code without loop, for single image is working perfectly.

Please help.

import os
import glob
import numpy as np
from PIL import Image

path = r'D:\user\ASCII'
outpath = 'D:\user\ASCII\TIFF'

filenames = glob.glob(path + "/*.asc") #read all files in the path mentioned

for x in filenames:
    myarray = np.loadtxt(x, skiprows=9)
    im = Image.fromarray(myarray)
    im.save(outpath + '/*.tif')

Ondřej Grover · Accepted Answer · 2017-02-21 07:15:18Z

5

You have an asterisk in the save() function which makes no sense, it has nothing to match. It will not automatically substitute the * match from glob function. I think what you wanted to do something like this

src_fname, ext = os.path.splitext(x)  # split filename and extension
# construct output filename, basename to remove input directory
save_fname = os.path.join(outpath, os.path.basename(src_fname)+'.tif')
im.save(save_fname)

Remember to use os.path module functions instead of concatenating filenames with slashes as they handle edge cases correctly on every platform.

answered Feb 21, 2017 at 7:15

Ondřej Grover

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2 Comments

Gopal Krishna Over a year ago

Thanks Ondřej for help. if we split the file name and extension then 'np.loadtext' would not work.

Ondřej Grover Over a year ago

You split it after you use np.loadtxt(x), that way the original x variable is a full valid file name.

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