Python In Practice - 15 Projects to Master Python - Detecting Faces in Images with Our Model

Python In Practice - 15 Projects to Master Python - Detecting Faces in Images with Our Model

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Hard

Created by

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The video tutorial explains how to perform face detection using a Cascade classifier and OpenCV. It covers importing images, converting them to grayscale, and using the detect multiscale method to identify faces. The tutorial demonstrates how to display detected faces with rectangles and concludes with a preview of creating a function for face detection in the next lesson.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of converting an image to grayscale in the context of face detection?

To enhance color details

To reduce the image size

To simplify the detection process

To increase the image resolution

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is used to detect faces at multiple scales in an image?

detectSingleScale

detectMultiscale

detectFaces

detectCoordinates

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the arguments 1.3 and 5 in the detectMultiscale method?

They define the color space

They are default values for detection

They specify the image resolution

They adjust the image brightness

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you verify if a face has been detected in an image?

By checking the image size

By viewing the core variable for coordinates

By converting the image to RGB

By increasing the detection scale

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What function is used to display an image with detected face coordinates?

CV2.imshow

CV2.showImage

CV2.view

CV2.display

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which function is used to draw rectangles around detected faces?

CV2.rectangle

CV2.border

CV2.draw

CV2.shape

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the next step after detecting face coordinates to visualize them on an image?

Change the image resolution

Convert the image to grayscale

Use a for loop to draw rectangles

Increase the detection scale