How can I read an image from an Internet URL in Python cv2, scikit image and mahotas?
Since a cv2 image is not a string (save a Unicode one, yucc), but a NumPy array, - use cv2 and NumPy to achieve it:
import cv2import urllibimport numpy as npreq = urllib.urlopen('http://answers.opencv.org/upfiles/logo_2.png')arr = np.asarray(bytearray(req.read()), dtype=np.uint8)img = cv2.imdecode(arr, -1) # 'Load it as it is'cv2.imshow('lalala', img)if cv2.waitKey() & 0xff == 27: quit()
The following reads the image directly into a NumPy array:
from skimage import ioimage = io.imread('https://raw2.github.com/scikit-image/scikit-image.github.com/master/_static/img/logo.png')
in python3:
from urllib.request import urlopendef url_to_image(url, readFlag=cv2.IMREAD_COLOR): # download the image, convert it to a NumPy array, and then read # it into OpenCV format resp = urlopen(url) image = np.asarray(bytearray(resp.read()), dtype="uint8") image = cv2.imdecode(image, readFlag) # return the image return imagethis is the implementation of url_to_image in imutils, so you can just call
import imutilsimutils.url_to_image(url)