Loading all images using imread from a given folder

Question

Loading and saving images in OpenCV is quite limited  so    what is the preferred ways to load all images from a given folder  Should I search for files in that folder with  png or  jpg extensions  store the names and use imread with every file  Or is there a better way

User · Answer

If all images are of the same format   import cv2 import glob  images    cv2 imread file  for file in glob glob  path to files   jpg      For reading images of different formats   import cv2 import glob  imdir    path to files   ext     png    jpg    gif        Add image formats here  files       files extend glob glob imdir          e   for e in ext   images    cv2 imread file  for file in files

User · Answer

I used skimage  You can create a collection and access elements the standard way  i e  col index   This will give you the RGB values   from skimage io import imread collection   your path  col dir    cats   jpg    creating a collection with the available images col   imread collection col dir

User · Answer

import glob cv img      for img in glob glob  Path to dir   jpg        n  cv2 imread img      cv img append n

User · Answer

import os import cv2 rootdir    directory path  for subdir  dirs  files in os walk rootdir       for file in files          frame   cv2 imread os path join subdir  file

User · Answer

Why not just try loading all the files in the folder   If OpenCV can t open it  oh well   Move on to the next   cv2 imread   returns None if the image can t be opened  Kind of weird that it doesn t raise an exception   import cv2 import os  def load images from folder folder       images          for filename in os listdir folder           img   cv2 imread os path join folder filename           if img is not None              images append img      return images

User · Answer

you can use glob function to do this  see the example   import cv2 import glob for img in glob glob  path to folder   png        cv img   cv2 imread img

User · Answer

To add onto the answer from Rishabh and make it able to handle files that are not images that are found in the folder   import matplotlib image as mpimg  images      folder      your folder   for filename in os listdir folder       try          img   mpimg imread os path join folder  filename           if img is not None              images append img      except          print  Cant import     filename  images   np asarray images

User · Answer

You can also use matplotlib for this  try this out   import matplotlib image as mpimg  def load images folder       images          for filename in os listdir folder           img   mpimg imread os path join folder  filename           if img is not None              images append img      return images

[python] Loading all images using imread from a given folder

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