Digital Image Processing Exam

Digital Image Processing Exam

12th Grade

20 Qs

quiz-placeholder

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Digital Image Processing Exam

Digital Image Processing Exam

Assessment

Quiz

World Languages

12th Grade

Practice Problem

Easy

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following can be done by point processing?

Darken image

Negative image

All of other options

Brighten image

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Histogram equalization is mainly used for...

Making an existing image brighter

Improving contrast of an existing image

Making an existing image darker

Reducing contrast of an existing image

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Given that “img” is an 2D array of float grayscale values from 0.0 to 1.0. Insert a line into the blank in Python to reduce the global brightness of the image? (We will perform clipping after the loops.)

img[y][x] -= 0.5

img[y][x] *= 0.5

img[y][x] /= 0.5

img[y][x] += 0.5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the order of main steps when performing frequency filtering?

Preprocessing, Filter, Inverse Fourier transform, Post processing, Fourier transform

Preprocessing, Filter, Fourier transform, Post processing, Inverse Fourier transform

Preprocessing, Fourier transform, Filter, Inverse Fourier transform, Post processing

Preprocessing, Inverse Fourier transform, Filter, Fourier transform, Post processing

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The dilation operation can be used to...

All of other choices

Fill small holes inside objects

Join very near objects

Make objects bigger

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

High pass filter is to...

Eliminate both low frequency components and high frequency components

Eliminate low frequency components and keep high frequency components

Eliminate high frequency components and keep low frequency components

Keep both low frequency components and high frequency components

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For each pixel in the input image, what is point processing?

An operation that takes that pixel and produces one output pixel

An operation that takes that pixel with some neighbor pixels and produces some output pixels

An operation that takes that input pixel and produces some output pixels

An operation that takes that pixel with some neighbor pixels and produces one output pixel

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