python openCV

python openCV

University

20 Qs

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python openCV

python openCV

Assessment

Quiz

Computers

University

Practice Problem

Medium

Created by

Ronnie Luy

Used 78+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the import cv2 statement do?

Imports the SciPy library for numerical processing.

Imports the NumPy library for numerical processing.

Imports our OpenCV Python bindings.

Displays an image to our screen.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

We have an image that is 393 pixels wide and 312 tall. How many total pixels are in the image?

367,848

122,616

280,800

93,600

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

OpenCV stores RGB pixels in what order?

BGR

GBR

RGB

BRG

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The RGB tuple (255, 0, 0) codes for red. But OpenCV would actually interpret this color as:

Orange

Blue

Green

Yellow

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cropping: Now, suppose I want to extract a second rectangular region from my image starting at x=1, y=48 and ending at x=80, y=69. What is the correct line of code to perform this cropping?

Crop = image[80:69, 1:48]

Crop = image[1:48, 80:69]

Crop = image[48:80, 48:69]

Crop = image[48:69, 1:80]

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Given the following NumPy array shape, how would we interpret the width, height, and number of channels in the image: (400, 600, 3):

Width=600, height=400, channels=3

Width=600, height=3, channels=400

Width=400, height=600, channels=3

width=3, width=600, channels=400

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Suppose our image has a width of 700 pixels, a height of 550 pixels, and 3 channels, one for each Red, Green, and Blue component. How would we express this image as a NumPy array shape?

(550, 700, 3)

(3, 550, 700)

(700, 550, 3)

(3, 700, 550)

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