CODEWITHSUNDEEP
pythonimageimage-processingpython-imaging-library
bjorgulf
bjorgulf

Reputation: 23

Automated picture resizing in Pillow

I want all the pictures in given directory to have the same size. This is what I have: 

import PIL
import os
import math

from PIL import Image

dirPath = r"C:\\a"
dirList = os.listdir(dirPath)
outPath = r"C:\\b"

im_new = Image.new('RGB', (124,90), 'white')
new_w = 124
new_h = 90

for (dirname, dirs, files) in os.walk(dirPath):
    for filename in files:
        print("Opening:"+filename)
        thefile = os.path.join(dirname,filename)
        im = Image.open(thefile)

        old_w, old_h = im.size

        x1 = int(math.floor((new_w - old_w) / 2))
        y1 = int(math.floor((new_h - old_h) / 2))

        im_new.paste(im, (x1, y1, x1 + old_w, y1 + old_h))

        print("Saving:"+filename)
        outfile = os.path.join(outPath,filename)
        im_new.save(outfile, "PNG")


print("Done!")

The things is, it doesn't loop correctly. Rather than having an image fixed on a white background, it just throws previous ones on the next. Hope that kinda makes sense.

Upvotes: 2

Views: 97

Answers (1)

Kevin
Kevin

Reputation: 76184

im_new is created outside the loop, so you only ever have one. Changes made to it in one iteration of the loop are visible in later iterations. Try creating it inside the loop instead.

for (dirname, dirs, files) in os.walk(dirPath):
    for filename in files:
        im_new = Image.new('RGB', (124,90), 'white')
        #...

Upvotes: 1

Related Questions