7. Computer Vision - Image Basics with OpenCV and Python

Computer Vision - Image Basics with OpenCV and Python

by Coursera Project Network

Graded Quiz Answers :

1.Question 1

The libraries that we need to import are:

• numpy as bp
• matplotlib.pyplot as plt
• cv2

1 / 1 point

True!

False!

2.Question 2

The main points that we must remember when we work with OpenCV are:

1 / 1 point

Four

Three

One

Two

3.Question 3

If we want to draw a shape and fill it inside we must write:

1 / 1 point

fillInside=1

1

fillInside=True

-1

4.Question 4

We can draw shapes by coding the coordinates of the shape we want to draw and we can draw shapes with the mouse.

1 / 1 point

True

False

5.Question 5

We have opend an image with Matplotlib.pyplot and we want to remove only the Blue channel. Our code will be:

1 / 1 point

[:, :, 1] = 0

[:, :, 1] = -1

[:, :, 2] = 0

[:, :, 2] = -1

6.Question 6

We can only draw on specific points on an image. We cannot draw shapes by moving our mouse.

1 / 1 point

True

False

7.Question 7

We are working with OpenCV and we want to draw a straight line on our image. How many points do we need to use?

1 / 1 point

3

4

2

8.Question 8

We have opened an image with OpenCV. We want to flip it on both Vertical and Horizontal axis. Which is correct the code ?

1 / 1 point

cv2.flip(img, -1)

cv2.flip(img, 0)

cv2.flip(img, 1)

9.Question 9

We can draw with a mouse but we cannot give functionallity to both buttons of the mouse.

1 / 1 point

True

False