resizing images in a folder using python PIL - python

#!/usr/bin/python
from PIL import Image
import os, sys
path = "C:/Users/nonono/Desktop/hypergan/data/trainingData/"
dirs = os.listdir( path )
def resize():
for item in dirs:
if os.path.isfile(path+item):
im = Image.open(path+item)
f, e = os.path.splitext(path+item)
imResize = im.resize((256,256), Image.ANTIALIAS)
imResize.save(f + ' resized.jpg', 'JPEG', quality=90)
resize()
i got this code from another answer here and fitted it to my own parameters, yet when i run it in the command line i get an error:
Traceback (most recent call last):
File "resize.py", line 16, in <module>
resize()
File "resize.py", line 11, in resize
im = Image.open(path+item)
File "C:\Users\nonono\AppData\Local\Programs\Python\Python37\lib\site-packages\PIL\Image.py", line 2822, in open
raise IOError("cannot identify image file %r" % (filename if filename else fp))
OSError: cannot identify image file 'C:/Users/nonono/Desktop/hypergan/data/trainingData/bx71zze7egy18wel231 resized.jpg'
the folder trainingData is filled with a large amount of images, that i want to resize to 256x256 regardless of aspect ratio, i will not need the images afterwards so if there is a way to replace the images instead of just copying, resizing, and renaming, that would be great (unless i am reading this incorrectly, i have about 2 weeks experience in python)
any help would be appreciated

Related

imread() unable to identify existing image on Spyder

The file evidently exists, but imread() is unable to identify the image. Is there something I am missing? I'm still new to python and its respective libraries.
Code (Python 3.7.9)
import os
import time
import numpy as np
import matplotlib.pyplot as plt
from randomlyShiftChannels import *
from alignChannels import *
from utils import *
#Path to your data directory
data_dir = os.path.join('..', 'data', 'demosaic')
#List of images
image_names = ['balloon.jpeg','cat.jpg', 'ip.jpg',
'puppy.jpg', 'squirrel.jpg', 'pencils.jpg',
'house.png', 'light.png', 'sails.png', 'tree.jpeg'];
print('Evaluating alignment...')
for imgname in image_names:
# Read image
imgpath = os.path.join(data_dir, imgname)
print("File exists:", os.path.exists(imgpath))
img = imread(imgpath)
Output
File exists: True
Traceback (most recent call last):
File "D:\Spring2021\CS370\week 6\p2-release\code\evalAlignment.py", line 48, in <module>
img = imread(imgpath)
File "D:\Spring2021\CS370\week 6\p2-release\code\utils.py", line 14, in imread
img = plt.imread(path).astype(float)
File "C:\Users\dminn\AppData\Local\Programs\Spyder\pkgs\matplotlib\pyplot.py", line 2246, in imread
return matplotlib.image.imread(fname, format)
File "C:\Users\dminn\AppData\Local\Programs\Spyder\pkgs\matplotlib\image.py", line 1496, in imread
with img_open(fname) as image:
File "C:\Users\dminn\AppData\Local\Programs\Spyder\pkgs\PIL\Image.py", line 2944, in open
"cannot identify image file %r" % (filename if filename else fp)
UnidentifiedImageError: cannot identify image file '..\\data\\demosaic\\balloon.jpeg'
I faced the identical issue using Spyder (Spyder 5.0.0 and 5.0.1).
No errors appeared when running the script from the command line.
Found workaround for Spyder: use pil_to_array() instead of imread()
from PIL import Image
img = pil_to_array(Image.open(imgpath))
Try converting your path to an absolute path, there are reasons we call it good practice
Sample code:
import os
os.path.abspath("mydir/myfile.txt") #'C:/example/cwd/mydir/myfile.txt'

How to give proper paths of folders in D drive in python

This is my code. Basically i want to load all images in a folder inside my D drive in a loop.
from PIL import Image
def loadimages(path):
list=listdir(path)
loadedimages=[]
for image in list:
img=Image.open(path+image)
loadedimages.append(img)
return loadedimages
path= r"D:\ACADEMICS\8SEM\PatternClassification\CBT-1\TrainCharacters"
imgs=loadimages(path)
I am getting error like this
Traceback (most recent call last):
File "<pyshell#26>", line 1, in <module>
imgs=loadimages(path)
File "<pyshell#11>", line 5, in loadimages
img=Image.open(path+image)
File "C:\Users\anjana ouseph\AppData\Local\Programs\Python\Python37\lib\site-packages\PIL\Image.py", line 2809, in open
fp = builtins.open(filename, "rb")
FileNotFoundError: [Errno 2] No such file or directory: 'D:\\ACADEMICS\\8SEM\\PatternClassification\\CBT-1\\TrainCharacters1'
If the images are inside the TrainCharacters folder, you are missing a "\"
currently its looking for
'D:\\ACADEMICS\\8SEM\\PatternClassification\\CBT-1\\TrainCharacters1'
It's likely you need
'D:\\ACADEMICS\\8SEM\\PatternClassification\\CBT-1\\TrainCharacters\\1'
It appears the problem is the line img=Image.open(path+image).
I would recommend using the built-in Python path manipulation method os.path.join:
from PIL import Image
import os
def loadimages(path):
list=listdir(path)
loadedimages=[]
for image in list:
img=Image.open(os.path.join(path, image))
loadedimages.append(img)
return loadedimages
path= r"D:\ACADEMICS\8SEM\PatternClassification\CBT-1\TrainCharacters"
imgs=loadimages(path)

How to save an image list in PDF using PIL (pillow)?

I want use PIL .save() method for export my PIL image list to pdf.
in the PIL document , saving part say:
=> we can use append_images option for pdf format.
and in pillow's github page , this issue say : Added append_images to PDF saving #2526
I wrote this code:
import PIL
im1 = PIL.Image.open("1.jpg").convert("RGB")
im2 = PIL.Image.open("2.jpg").convert("RGB")
im3 = PIL.Image.open("3.jpg").convert("RGB")
images = [im1,im2,im3]
images[0].save("out.pdf", save_all=True, append_images=images[1:])
but it doesn't work!
These errors raised:
Traceback (most recent call last):
File "sample.py", line 13, in <module>
gif.save("out.pdf", save_all=True, append_images=images)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/PIL/Image.py", line 1928, in save
save_handler(self, fp, filename)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/PIL/PdfImagePlugin.py", line 55, in _save_all
_save(im, fp, filename, save_all=True)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/PIL/PdfImagePlugin.py", line 182, in _save
Image.SAVE["JPEG"](im, op, filename)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/PIL/JpegImagePlugin.py", line 609, in _save
info = im.encoderinfo
AttributeError: 'Image' object has no attribute 'encoderinfo'
Try this format
from PIL import Image
im1 = PIL.Image.open("1.jpg").convert("RGB")
im2 = PIL.Image.open("2.jpg").convert("RGB")
im3 = PIL.Image.open("3.jpg").convert("RGB")
images = [im2,im3]
im1.save("out.pdf", save_all=True, append_images=images)
This problem is solved in PIL ver 5.0.0 (https://pillow.readthedocs.io/en/latest/).
Somewhat off topic, but if you have a large number of images to convert, using list comprehension is the way to go.
from PIL import Image
im1=Image.open('1.png').convert('RGB')
images = [Image.open(f”{imgNumber}.png”).convert('RGB') for imgNumber in range(2, 100)]
im1.save("imgBook.PDF", save_all=True, append_images=images)

Error Message When Converting to Grayscale in Python Using PIL?

So, I've got PIL installed (at least I think properly) to convert color images to grayscale, and when I use this code
from PIL import Image
image_file = Image.open("James.png") # open colour image
image_file = image_file.convert('1') # convert image to black and white
image_file.save('Gray.png')
IDLE shows me this...
Traceback (most recent call last):
File "C:/Users/Kane/Desktop/huh.py", line 2, in <module>
image_file = Image.open("James.png")
File "C:\Python27\lib\site-packages\PIL\Image.py", line 1952, in open
fp = __builtin__.open(fp, "rb")
IOError: [Errno 2] No such file or directory: 'James.png'
What do I need to do to fix this? I have Python 2.7, does this make a difference?
Your problem could be that the image file "James.png" is not in the same directory as your script, in your example on your Desktop. Is that the case?
Cheers

pytesser doesn't work in python

I am using only PIL then it's work properly when I use pytesser then it doesn't work properly .What can i do for it?
from PIL import Image
from pytesser import *
image_file = Image.open("vote.jpg")
im = Image.open(image_file)
text = image_to_string(im)
print text
Traceback (most recent call last):
File "C:/Users/Tanvir/Desktop/py thon hand/hala.py", line 4, in <module>
image_file = Image.open("vote.jpg")
File "C:\Pythons27\lib\site-packages\PIL\Image.py", line 2286, in open
% (filename if filename else fp))
IOError: cannot identify image file 'vote.jpg'
I am find this solution .It was problem with PIL so at first I have to uninstall this PIL module then again install it and job done Every thing is okay.

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