python - OpenCV webcam capture -


i'm afraid have run bit beyond scope of novice abilities. quick summary of problem: attempting capture live video stream during experiment (using opensesame) webcam using opencv python module. can work, issue code pops open new window show live stream recording. how alter code not show live window still able press 'q' shut off live stream?

import numpy np import cv2  subject = str(self.get('subject_nr')) cap = cv2.videocapture(0) w=int(cap.get(cv2.cap_prop_frame_width )) h=int(cap.get(cv2.cap_prop_frame_height ))  #define codec , create videowriter object #fourcc = cv2.videowriter_fourcc(*'divx') fourcc = cv2.videowriter_fourcc(*'xvid') out = cv2.videowriter('path\to\output'+ subject + '.avi', -1, 20.0, (w,h))  while(cap.isopened()):     ret, frame = cap.read()     if ret==true:          out.write(frame)          cv2.imshow('frame',frame)         if cv2.waitkey(1) & 0xff == ord('q'):             break     else:         break  #release if job finished cap.release() out.release() cv2.destroyallwindows()

cv2.waitkey() captures keystrokes highgui window. cannot use waitkey capture keystrokes if never display window. need can capture keystrokes terminal.

for linux, can achieve using termios , fcntl modules. here example python's documentation. https://docs.python.org/2/faq/library.html#how-do-i-get-a-single-keypress-at-a-time


Comments

Post a Comment

Popular posts from this blog

javascript - Bootstrap Popover: iOS Safari strange behaviour -

i looking through twitter bootstrap documentation, , i'm interested in implementing dismissible popover when button clicked. here example bootstrap's docs: http://getbootstrap.com/javascript/#dismiss-on-next-click when press "dismissible popover" button os x safari browser works fine. when access same link above ios safari, button not work. is, popover not dismissed on click. why button not working ios safari? the example linked using data-trigger="focus" attribute. try changing data-trigger="click" . <a tabindex="0" class="btn btn-lg btn-danger" role="button" data-toggle="popover" data-trigger="click" title="dismissible popover" data-content="and here's amazing content. it's engaging. right?">dismissible popover</a>
Read more

Magento/PHP - Get phones on all members in a customer group -

i working on custom magento extension. working around adminhtml part , i've created custom form there. here form code: <?php class vivasindustries_smsnotification_block_adminhtml_sms_sendmass_edit_form extends mage_adminhtml_block_widget_form { public function _preparelayout() { $extensionpath = mage::getmoduledir('js', 'vivasindustries_smsnotification'); $head = $this->getlayout()->getblock('head'); $head->addjs('jquery.js'); $head->addjs('vivas.js'); return parent::_preparelayout(); } protected function _prepareform() { $form = new varien_data_form(array( 'id' => 'edit_form', 'action' => $this->geturl('*/*/save', array('id' => $this->getrequest()->get...
Read more

session - Logging Out Using PHP -

i have seen other programs regarding can't seem make work. doing wrong? want achieve after user logged out, going previous pages become restricted. i have 3 php files: 1. sample.php - main page username , password filled in 2. successful.php - user's page after logging in 3. logout.php - destorys session hinder user access pages after logging out sample.php </html> <form action="" method="post"> <table> <tr> <td>username:</td> <td>password:</td> </tr> <tr> <td><input type="text" name="username"></td> <td><input type="password" name="password"></td> </tr> <tr> <td><input type="submit" value="submit" name="submit"></td> </tr> </table> </form> </html> <?php $servername = "localhost"; $username = ...
Read more