Convert image from PIL to openCV format

Question

I m trying to convert image from PIL to OpenCV format  I m using OpenCV 2 4 3  here is what I ve attempted till now    gt  gt  gt  from PIL import Image  gt  gt  gt  import cv2 as cv  gt  gt  gt  pimg   Image open  D   traffic jpg                              PIL Image  gt  gt  gt  cimg   cv cv CreateImageHeader pimg size cv IPL DEPTH 8U 3      CV Image  gt  gt  gt  cv cv SetData cimg pimg tostring     gt  gt  gt  cv cv NamedWindow  cimg    gt  gt  gt  cv cv ShowImage  cimg  cimg   gt  gt  gt  cv cv WaitKey     But I think the image is not getting converted to CV format  The Window shows me a large brown image  Where am I going wrong in Converting image from PIL to CV format   Also   why do i need to type cv cv to access functions

User · Answer

This is the shortest version I could find,saving/hiding an extra conversion:

pil_image = PIL.Image.open('image.jpg')
opencvImage = cv2.cvtColor(numpy.array(pil_image), cv2.COLOR_RGB2BGR)

If reading a file from a URL:

import cStringIO
import urllib
file = cStringIO.StringIO(urllib.urlopen(r'http://stackoverflow.com/a_nice_image.jpg').read())
pil_image = PIL.Image.open(file)
opencvImage = cv2.cvtColor(numpy.array(pil_image), cv2.COLOR_RGB2BGR)

User · Answer

The code commented works as well  just choose which do you prefer import numpy as np from PIL import Image   def convert from cv2 to image img  np ndarray  - gt  Image        return Image fromarray cv2 cvtColor img  cv2 COLOR BGR2RGB       return Image fromarray img    def convert from image to cv2 img  Image  - gt  np ndarray        return cv2 cvtColor numpy array img   cv2 COLOR RGB2BGR      return np asarray img

User · Answer

use this    pil image   PIL Image open  Image jpg   convert  RGB    open cv image   numpy array pil image     Convert RGB to BGR  open cv image   open cv image         -1  copy

[python] Convert image from PIL to openCV format

Examples related to python

Examples related to image-processing

Examples related to opencv

Examples related to python-imaging-library