Practice Drawing On Images (21.4.4) - OpenCV - CBSE 10 AI (Artificial Intelleigence)

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What function do you use to draw rectangles in OpenCV?
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Think about the name of the function for rectangles.
Question 2.
How do you specify the color for drawn shapes?
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Remember the order of colors in OpenCV.
3Question 3.
What parameters do you need for cv2.rectangle()?
- Image, Start Point, End Point, Color, Thickness
- Image, Center, Radius, Color, Thickness
- None
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Remember the acronym for rectangle parameters.
4Question 4.
True or False: cv2.circle() requires a radius parameter.
- True
- False
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Think about what makes a circle complete.
Question 5.
Create a function that takes an image and a list of circles with coordinates and radius, then draws all these circles on the image.
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Remember to use the correct parameters for color and thickness.
Question 6.
Design a simple OpenCV application that loads an image and allows users to click on the image to draw circles where they click.
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Map the click coordinates to the circle parameters.

5 more questions in this section. Enroll free to practise them all.