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name

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Severity: Notice

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Line: 191
Function: _error_handler

File: /home/prodcxja/public_html/questions/application/controllers/Questions.php
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Function: view

File: /home/prodcxja/public_html/questions/index.php
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Function: require_once

name Punditsdkoslkdosdkoskdo

Download image with selenium python

I want get captcha image from browser. I have got a url of this picture, but the this picture changes each updated time (url is constant).

Is there any solution to get picture from browser (like 'save picture as' button)?

From the other hand, I think it should be work:

  1. get screenshot of the browser
  2. get position of picture
  3. crop captcha from screenshot using opencv

link of the dynamic capcha - link

The problem was solved via screenshot:

browser.save_screenshot('screenshot.png')
img = browser.find_element_by_xpath('//*[@id="cryptogram"]')
loc = img.location

image = cv.LoadImage('screenshot.png', True)
out = cv.CreateImage((150,60), image.depth, 3)
cv.SetImageROI(image, (loc['x'],loc['y'],150,60))
cv.Resize(image, out)
cv.SaveImage('out.jpg', out)

Thanks

Here's a complete example (using google's recaptcha as a target):

import urllib
from selenium import webdriver

driver = webdriver.Firefox()
driver.get('http://www.google.com/recaptcha/demo/recaptcha')

# get the image source
img = driver.find_element_by_xpath('//div[@id="recaptcha_image"]/img')
src = img.get_attribute('src')

# download the image
urllib.urlretrieve(src, "captcha.png")

driver.close()

UPDATE:

The problem with dynamic generated images is that there is a new image generated each time you request it. In that case, you have several options:

  • take a screenshot

    from selenium import webdriver
    
    driver = webdriver.Firefox()
    driver.get('https://moscowsg.megafon.ru/ps/scc/php/cryptographp.php?PHPSESSID=mfc540jkbeme81qjvh5t0v0bnjdr7oc6&ref=114&w=150')
    
    driver.save_screenshot("screenshot.png")
    
    driver.close()
    
  • simulate right click + "Save As". See this thread for more info.

Hope that helps.

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It's ok to save a screenshot from the whole page and then cut the image from, but you can also to use the "find" method from "webdriver" to locate the image you want to save, and write the "screenshot_as_png" property like below:

from selenium import webdriver
driver = webdriver.Firefox()
driver.get('https://www.webpagetest.org/')
with open('filename.png', 'wb') as file:
    file.write(driver.find_element_by_xpath('/html/body/div[1]/div[5]/div[2]/table[1]/tbody/tr/td[1]/a/div').screenshot_as_png)

Sometimes it could get an error because of the scroll, but depending on your necessity, it's a good way to get the image.

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    • @ Ramon this does not work, I am trying to get the image of your profile pic from this page and get the error elenium.common.exceptions.WebDriverException: Message: unknown command: session/5734e4b0f8d6171317af42ddf0979562/element/0.9586500909174849-1/screenshot

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