Face Detection

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What is OpenCV primarily used for?

• a) Video editing
• b) Face detection
• c) Web development
• d) 3D modeling

Which Python library is commonly used for computer vision tasks like face detection?

• a) TensorFlow
• b) Scikit-learn
• c) OpenAI
• d) OpenCV

Which OpenCV function is commonly used to load an image from a file?

• a) load_image()
• b) read_image()
• c) cv2.imread()
• d) import_image()

What is Haar Cascade in the context of face detection?

• a) A type of coffee filter
• b) A machine learning algorithm used for object detection
• c) A Python module for handling images
• d) A function in OpenCV for drawing rectangles

Which function in OpenCV is used to convert an image to grayscale?

• a) cv2.convertToGray()
• b) cv2.toGrayImage()
• c) cv2.cvtColor()
• d) cv2.grayScale()

In OpenCV, what is a Region of Interest (ROI)?

• a) A type of face detection algorithm
• b) The area of an image where a face is located
• c) A filter used for image enhancement
• d) A function for resizing images