CODEWITHSUNDEEP
pythonopencvglob
Maham
Maham

Reputation: 442

Loading multiple images from a text file

I have got 40 images,and I have written their names in a text file. Now I want to call those images one by one in my program,using that text file (in Python).

I have used glob to find all image names,(instead of text file). glob list contains of names like that:

img=['image0.jpg','image1.jpg',....]

Now If I access any image like img[0],img[1] it is just image0.jpg not 'image0.jpg', so I have got trouble loading using opencv function to load it. I want to load it like

cv.LoadImage('image0.jpg')

Upvotes: 0

Views: 2780

Answers (2)

RMcG
RMcG

Reputation: 1095

If your file contains the fully-qualified names of the files. You can do the following

import cv
with open('textFileOfImages.txt','rb') as f:
    img = [line.strip() for line in f]

#load the images at you leisure
for image in img:
    loadedImage = cv.LoadImage(image)
    #manipulate image

If your file contains the relative path from the current working directory then:

import os
import cv
with open('textFileOfImages.txt','rb') as f:
    img = ['%s/%s'%(os.getcwd(),line.strip()) for line in f]

Or if your file contains the relative path from directory the current script is running

import os
import cv
with open('textFileOfImages.txt','rb') as f:
     img = ['%s/%s'%(os.path.dirname(os.path.abspath(__file__)),line.strip()) for line in f]

Edit

If you need to load image names from multiple files you can easily incorporate this. Assuming you have the list of file names, then the easiest way is to loop outside the with statement.

listOfFilenames = ['filename1.txt','filename2.txt','filename3.txt']
for filename in listOfFilenames: 
    with open(filename,'rb') as f:
    ...

Upvotes: 1

Siva Cn
Siva Cn

Reputation: 947

Try using

for _file in img:
    cv.LoadImage("{0}".format(_file))

if your file is in other directory, 

import os
for _file in img:
    cv.LoadImage("{0}".format(os.path.join(directory, _file)))

Upvotes: 0

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