Assign image names in folder to images in other folder.

[ujjwalrathod007]

Hello all,

I want to use images for input to my algorithm. the images are stored in a file with names and I want to extract those names and give it to the other images in a folder in a given order.

I tried oslistdir() but the order in array generated is different than the file's order. how can I solve this?

import os
import numpy as np

list=os.listdir("/home/ujjval/Downloads/rgbd_dataset_freiburg1_xyz/rgb/")
list2=os.listdir("/home/ujjval/Downloads/video-image/data")

print(list);
print(list2);

[Larz60+]

Could you elaborate a bit, (example would be nice), and perhaps show what the file looks like.
Does the file contain just names?
The directory just images?

[ujjwalrathod007]

Yes the source directory contains images with names as follows. the images are 480*640 wide...

'1305031114.111263.png', '1305031111.111508.png', '1305031115.879198.png', '1305031128.379404.png', '1305031117.843291.png' etc etc....

I want to give these names to files which also contains images with

'000000179.png', '00000059.png', '000000186.png', '00000094.png', '000000281.png', '000000199.png', '000000181.png', '000000201.png' etc. etc.

but I think I got it now. the files are in acending order so I can use numpy sort function but I will try than tomorrow

[Larz60+]

load the file into a list, and sort using python sort. Or if you are going to be using numpy anyway, that will also work.

[ujjwalrathod007]

But what about renaming it?
I wrote the following code but it is not working the way I want.

import os
import numpy as np

list=os.listdir("/home/ujjval/Downloads/rgbd_dataset_freiburg1_xyz/rgb/")
list2=os.listdir("/home/ujjval/Downloads/video-image/data/")

list.sort()

print(list);
print(list2);

for i, filename in enumerate(list):
    os.rename("/home/ujjval/Downloads/rgbd_dataset_freiburg1_xyz/rgb/" + filename ,"/home/ujjval/Downloads/video-image/data/" + str(i)+".png" )

[Larz60+]

don't ever name a variable the same as a python reserved word 'list' is one such word.
This begs for trouble.

[ujjwalrathod007]

I want to rename the images in a folder with images in another folder. after trying a while it seems bit tricky.

My images in the source folder looks like the following

1305031102.175304.png
1305031102.211214.png
1305031102.243211.png
1305031102.275326.png
1305031102.311267.png
1305031102.343233.png
1305031102.375329.png
1305031102.411258.png
1305031102.443271.png

I want to give same names as above to the images in another folder with names as following

0000000.png
0000001.png
0000002.png
0000003.png

I have tried os.rename as follows

import os
import numpy as np

path= "/home/ujjval/Downloads/rgbd_dataset_freiburg1_xyz/rgb/"
path1="/home/ujjval/Downloads/video-image/data/"

list1=os.listdir("/home/ujjval/Downloads/rgbd_dataset_freiburg1_xyz/rgb/")
list2=os.listdir("/home/ujjval/Downloads/video-image/data/")

list1.sort()
list2.sort()

print(list1);
print(list2);
i=1
print(str(path))

#for file in path:
 #   for files in path1:
        #os.rename(os.path.join(path,file), os.path.join(path1,files))
        #os.rename("/home/ujjval/Downloads/rgbd_dataset_freiburg1_xyz/rgb/"+ str(file), "/home/ujjval/Downloads/video-image/data/"+str(file) +".png" )

[snippsat]

A example.

import os

path = r'E:\div_code\rename'
new_path = r'E:\div_code\new'
os.chdir(path)
for index,img in sorted(enumerate(os.listdir(path), 1)):
    if img.endswith('.png'):
        #print(index, img)
        os.rename(img, f'{new_path}/{index:03}.png')

See that i change to path where images are os.chdir(path),if not has to use os.path.join() in rename.
String formatting used f-string from 3.6-->.

>>> n = 5
>>> print(f'{n:03}')
005
>>> print(f'{n:08}')
00000005
>>> print(f'{n:015}')
000000000000005

[ujjwalrathod007]

I did exactly the same as you suggested. In fact it is giving me an error

Error:
FileNotFoundError: [Errno 2] No such file or directory: '1305031114.111263.png' -> '/home/ujjval/Downloads/video-image/data/0000001.png'

but there is such file as 0000001.png and it should be renamed.!!

can you tell what does the following lines mean?

 os.rename(img, f'{new_path}/{index:03}.png')

[Larz60+]

I did exactly the same as you suggested.

can't be sure if can't see code, it could be a single character causing issue.
please, when showing errors, re-display code that is generating the error,
and post the error traceback verbatim.