Trackbar

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What is a track bar used for in OpenCV?

• Drawing shapes on an image
• Adjusting image brightness
• Creating interactive graphical user interfaces
• Playing audio in a video

In OpenCV, which function is used to create a window for the track bar?

• cv2.createWindow()
• cv2.imshow()
• cv2.setWindowTitle()
• cv2.namedWindow()

What does the 'cv2.createTrackbar()' function do?

• Creates a new image
• Creates a track bar within a window
• Sets the title of the track bar window
• Displays an image on the screen

Which parameter of 'cv2.createTrackbar()' defines the name of the track bar?

• Title
• Name
• Label
• Window

How many color channels can be adjusted individually using track bars (typically) when modifying colors?

• 1
• 2
• 3
• 4

What do 'b', 'g', and 'r' represent when using track bars to adjust colors in OpenCV?

• Blue, green, and red color channels
• Brightness, gamma, and redness
• Background, gradient, and radius
• Base, gradient, and resolution