highgui. High-level GUI and Media I/O

While OpenCV was designed for use in full-scale applications and can be used within functionally rich UI frameworks (such as Qt, WinForms or Cocoa) or without any UI at all, sometimes there is a need to try some functionality quickly and visualize the results. This is what the HighGUI module has been designed for.

It provides easy interface to:

• create and manipulate windows that can display images and “remember” their content (no need to handle repaint events from OS)
• add trackbars to the windows, handle simple mouse events as well as keyboard commmands
• read and write images to/from disk or memory.
• read video from camera or file and write video to a file.

• User Interface
  • cv::createTrackbar
  • cv::getTrackbarPos
  • cv::imshow
  • cv::namedWindow
  • cv::setTrackbarPos
  • cv::waitKey
• Reading and Writing Images and Video
  • cv::imdecode
  • cv::imencode
  • cv::imread
  • cv::imwrite
  • VideoCapture
  • cv::VideoCapture::VideoCapture
  • cv::VideoCapture::get
  • cv::VideoCapture::set
  • VideoWriter
• Qt new functions
  • cv::setWindowProperty
  • cv::getWindowProperty
  • cv::fontQt
  • cv::addText
  • cv::displayOverlay
  • cv::displayStatusBar
  • cv::createOpenGLCallback
  • cv::saveWindowParameters
  • cv::loadWindowParameters
  • cv::createButton